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    • 专利摘要:
    A colored coating composition comprising a white base paint and at least one colored pigment which can be mixed with said paint, the latter comprising a film-forming polymer, a liquid carrier, one or more opacifying white pigments and one or more diluents, said composition having a photoreflectance value Y less than 110 and greater than that of the equation Y = mC + K, or 25> C> 1, 0, where C is the chroma of said composition, m and K being empirical coefficients chosen according to the type and the number of types of the at least one colored pigment depending on the measurement angle of said composition (Figure 1).
    公开号:BE1018430A6
    申请号:E2006/0628
    申请日:2006-12-20
    公开日:2010-11-09
    发明作者:
    申请人:Ici Plc；
    IPC主号:
    专利说明:

    Coating composition
    The present invention relates to a coating composition and. a method of producing a coating composition.
    Paint compositions or similar coatings, such as lacquers, varnishes or wood stains, are used by both the specialized professional decorator and the relatively unsophisticated painter who does everything for himself for a variety of reasons. Typically, it is about beautifying environments and / or adapting to the color of a particular home furnishing, floor covering or wall cladding and other surfaces that are found in buildings.
    The color of a coating composition is often defined by its brightness value CIELAB, L *, its chroma value CIELAB, C *, and its nuance value CIELAB, h. The term "CIE" refers to the International Commission on Illumination and its L *, C * and hCIELAB values are well known and widely used. L * is a measure of the perceived luminosity of the color, and the "chroma", C *, is a measure of the intensity of a color, that is, to what extent is it a pastel color or an intense color or something of an intermediary. The "shade", h, is a measure of how a color can be reddish, yellowish, greenish or bluish.
    The nuance is defined by the International Commission on Illumination (CIE) in the International Vocabulary of Lighting, 4th edition, CIE 17.4 (1987), ISBN 3900734070, as being "the attribute of a visual sensation that a surface appears to be similar to one of the perceived colors, namely red, yellow, green and blue, or a combination of two of them. "The shade angle defines the position of the shade in the color space L * a * b * CIE, where red, yellow, green and blue form angles of 0 °, 90 °, 180 ° and 270 °. Mathematically, the angle of shade CIE h is defined by the expression: h = arc tan (b * / a *) where a * and b * are measured when the color is on the opposite red-green and yellow-blue axes, respectively. They are related to the values of X, Y and Z: a * = 500 [(X / Xn) Λ0,333 - (Y / Yn) Λ0,333] b * = 200 [(Y / Yn) Λ0,333 - ( Z / Zn) Λ0,333] where Xn, Yn and Zn are the tristimulus values for the reference white in the context of the relevant illumination (eg D65 Northern sky daylight).
    Another commonly used measure of brightness is the photoreflectance value (referred to as LRV or Y). This measures the brightness at a different scale of L *, which is the physical amount of visible light reflected from a surface.
    Consumers select a coating composition based on the requirements of the part in which the coating composition is to be used, which particular coating composition is defined by brightness, chroma, and shade values.
    Consumers often want the pieces to be as clear as possible while still wanting to use decorative colors. This is particularly the case for small dark rooms. With the limited space available for buildings and consequent reduction in room size, it is likely that consumers will increasingly try to make rooms lighter and more colorful.
    The known coating compositions are limited in their LRV for the particular chroma required and, therefore, when applied to a surface of the part, are limited in the way that they can contribute to making the piece clearer.
    An object of the present invention is to provide a coating composition which, when applied to a surface in a room, makes the room lighter than is possible with currently available coating compositions having a similar chroma.
    As a result, the present invention is directed to a colored coating composition comprising a white basecoat and at least one colored pigment of a form that can be easily mixed with the white basecoat, the white basecoat comprising a film-forming polymer, a liquid carrier, one or a plurality of opacifying white pigments and one or more diluents, the color coating composition having a photoreflectance value Y of less than 110 and greater than that defined by the equation:
    Y = mC + K
    where C> 1.0, where C is the chroma of the colored coating composition, where m and K are empirical coefficients selected according to the type and number of types of the at least one color pigment and depending on the composition shade angle coating.
    By applying a coating composition having a dry LRV within the defined range on a workpiece surface, the workpiece is made lighter than would be the case with currently available coating compositions having a similar chroma.
    The empirical constants m and K are selected by type, that is, organic or inorganic, and by the number of types of pigment dyes, ie, one, two, three, or more, and are dependent on the shade of the colored coating composition. It is understood that the organic term also refers to organometallic ligand pigments.
    In one embodiment of the invention describing a color region A, the minimum LRV of the required color coating composition is calculated using the empirical constants m and K, as defined in Table III.
    In one embodiment of the invention describing a color region B, the minimum LRV of the required color coating composition is calculated using the empirical constants m and K as defined in Table IV. The minimum LRV for obtaining a colored coating region in the color region A is greater than that required for the color region B, i.e., the color region B is a wider region.
    One way of obtaining a colored garment composition in region A requires that the white basecoat have a minimum LRV of 93, that the colored coating composition has a maximum of 0.015% by weight of carbon black pigment as compared to the dry weight total of the colored coating composition (based on a typical solids content in weight percent of 50 for this type of coating decomposition) and then a maximum of two colored organic pigments or a maximum of a single colored inorganic pigment, or a mixture of a single organic pigment and a single inorganic pigment, the organic pigment being capable of producing a colored coating composition having a first shade and the inorganic pigment being capable of producing a colored coating composition having a second shade, the first and second nuances separated by a maximum angle of 20 degrees. If the coating compositions are within a 20 degree difference, they are considered to have a similar shade.
    One way to obtain a colored coating composition in region B requires that the white base paint have a minimum LRV of 93, that the colored coating composition has a maximum of 0.022% by weight of carbon black pigment compared to the weight dry total of the colored coating composition (based on a typical content of 50% by weight of solids in this type of coating), and then three or more colored organic pigments in significant amounts, or two or more colored inorganic pigments. quantities, or a mixture of a single organic pigment and a single inorganic pigment, the organic pigment being capable of producing a colored coating composition having a first shade and the organic pigment being capable of producing a colored coating composition having a second shade, the first and second shades being separated by more than 20 degrees.
    As a result, it will be understood that the LRV of the minimum color coating composition required to obtain color region A or B will depend on the color pigments used.
    The minimum LRV of 93 for white base paint can be obtained by selecting one or more opacifying white pigments and one or more diluents according to the equation:
    where w is the weight fraction of the diluent in comparison with the total weight of one or more white opacifying pigments and one or more diluents, A and F
    designate empirical coefficients having values of 0, 785 and -0.0969, respectively, <Yext> is the weight-average photoreflectance value of the opacifying whitepigments of one or more diluentsand <YPig> is the mid-weighted photoreflectance value of one or more a plurality of white opacifying pigments, the average-weighted photoreflectance values being defined by the equations:
    As a result, it is possible to obtain a white base paint having the required LRV by choosing white pigments and diluents accordingly.
    Suitable examples of white pigments include grades of titanium dioxide obtained by a cleaner chloride production pathway by the slightly dirtier qualities of the sulfate process. Barium sulfate may also be used taking into account its LRV value.
    Suitable examples of diluents include precipitated calcium carbonate grades, directly excavated calcium carbonates, proper magnesium carbonate and calcium carbonate (dolomite) properties, clean pulverized clay (aluminosilicate) grades, and clean purified qualities. of magnesium silicate. The better qualities of clays that are often used in paint will be avoided.
    In another embodiment, for which the color coating composition is defined in color region A, the color coating composition may comprise a photoluminescent compound capable of emitting light in a particular portion of the visible spectrum so that it increases chroma of the colored coating composition. The photoluminescent compound (PLC) may be an azure-blue, a fluorescent pigment, or a phosphorescent pigment. It is understood that the use of the PLC to obtain the minimum LRV required for Region A does not depend on the white base paint having a LRVminimal of 93.
    Suitable optical brighteners include Ciba® üvitex® NFW and Tinopal CBSX (from CibaSpeciality Chemicals PLC, Charter Way, Macclesfield, Cheshire SK10 2NX) and Eastobrite OBI [CAS 1533-45-5] (Eastman Chemicals, PO Box 431, Kingsport TN 37662, USA).
    Suitable fluorescent pigments include AFN Chartreuse compounds (RadiantColor NV, Europark 1046, B-3530 Houthalen, Belgium),
    Invisible Blue S, Invisible Cyan S, Invisible Yellow S, Invisible Lemon S, Invisible Red S and Invisible Red R (Glowbug Ltd, Lisle Lane, Ely, Cambs, CB7 4AS, UK), Cartax CXDP [CAS 10128-55-9] (UK Clariant Ltd., Leeds, West Yorks, LS18 4RP, UK), and Lumogen F570 (Peak BASF, PO Box 4, Earl Road, Hulme Cheadle, Cheadle, CheshireSK8 6QG).
    Suitable phosphorescent pigments include strontium aluminates doped with one or more heavy metals as well as doped zinc sulfides (products from Lawrence Industries, PO Box 3000, Tamworth, Staffs, B79-7XJ). Inorganic phosphors are preferred over organic phosphors because of cost and light fastness, suitable examples being given in Inorganic Phosphors, Compositions, Preparation and Optical Properties, W.M. Yen and M. J. Weber Eds, ISBN 0843319498, CRC Press, Publication of 25 June 2004.
    Advantageously, it is therefore possible to increase the chroma of a coating composition by using a PLC due to the emission of fluorescence or phosphorescence in the same part of the visible spectrum as the part of the incident lightpreferentially reflected by the colored pigments present. This negates the need to use a higher concentration of colored pigment and associated reduction in the brightness of the colored coating composition because more light is absorbed by the colored pigments. On the other hand, it is possible to use a PLC to maintain the same chroma level and reduce the concentration of pigmented color so that there is less absorbed light and, as a result, the LRV of the colored coating composition is increased.
    The PLC can be applied as a clear top coat composition over a base coat composition or the PLC in the form of an optical brightener or a fluorescent pigment can be dispersed in the white base coat.
    Using the amounts of white diluent and pigment as defined by the above equation, it is possible to obtain a colored coating composition that has an LRV greater than the LRV known in the art.
    Another aspect of the present invention is a process for producing a coating composition comprising a white basecoat and at least one colored pigment in a form that can be readily mixed with the white basecoat, the white basecoat comprising a polymer film-forming agent, a liquid vehicle, one or more white opacifying pigments and one or more diluents, the colored coating composition having a photoreflectance value of less than 110 and greater than that defined in equation 4 below by selecting thinner and white pigment quantities as defined in Equation 1 below.
    Another aspect of the present invention is a process for producing a coating composition comprising a white basecoat and at least one colored pigment in a form that can be readily mixed with the white basecoat, the white basecoat comprising a polymer film-forming agent, a liquid vehicle, one or more white opacifying pigments and one or more diluents, the colored coating composition having a Y photoreflectance value of less than 110 and greater than that defined by equation 4 below by adding a fluorescent pigment capable of emitting of light in a particular part of the visible spectrum so that it increases the chroma of the colored coating composition.
    Another aspect of the present invention relates to a process for producing a coating composition comprising a white basecoat and at least one colored pigment in a form that can be easily mixed with the white basecoat, the white basecoat comprising a film-forming polymer, a liquid vehicle, one or more white opacifying pigments and one or more diluents, the colored coating composition having a Y photoreflectance value of less than 110 and greater than that defined by equation 4 below by adding a photoluminescent compound capable of emitting light in a particular part of the visible spectrum so that it increases the chroma of the colored coating composition.
    The invention will now be described by way of example only with reference to Annex A and the accompanying drawings in which: FIG. 1 is a graph showing (LRV / K) versus (chroma multiplied by (-m / K)) for the examples of colored coating composition (region A) and FIG. 2 is a graph showing (LRV / K) versus (chroma multiplied by (-m / K)) for the examples of colored coating composition (region B).
    A colored coating composition is created by conjointly blending a white base paint comprising, among other components, pigments and diluents and a stable colored pigment dispersion which can be easily mixed with the white basecoat. The coating compositions of Examples 1 to 47 are given in Table I of Appendix A. In Table I, the term PLC refers to a photoluminescent compound, of which F is a fluorescent pigment, an optical brightener and a phosphorescent pigment. Table I also identifies the number and type of color pigments used.
    The pigments and thinners of the white base paint are chosen according to their individual LRV, so that the photoreflectance value of the white base paint is above a minimum requirement, in which case the white base paint may be classified as clean (examples 1 and 45), or below a minimum requirement, in which case the white base paint may be classified as dirty (Example 17).
    Measurement of the photoreflectance value
    The photoreflectance value of the pigments and diluents in powder form is measured as a product.
    First, the powder is added to a deep dish so that it completely fills the plate. It was found that a 250 ml paint box lid was a suitable dish for this purpose. The filled lid is then placed between two sheets of polyester film ("Melinex" (TM) type S film, 19 μm thick) and stapled together so that the filled lid is tightly sandwiched between the two sheets. The LRV of the powder in the plate can now be measured in a vertical orientation with respect to the standard orifice of a color spectrophotometer. If the above-mentioned method is used to measure the LRV of the powders, any known method of measuring LRV can be used.
    The LRV of the white basecoats and lanuance, chroma and LRV of the colored coating compositions are measured using a spectrophotometer on the dried coating.
    Preparation of a white base paint (Example 1)
    The white base paint comprises components and amounts as defined in Table II below.
    Table II
    It is understood that white pigments distinguish diluents by their higher LRV (Y> 95). This group includes inorganic compounds, such as titanium dioxide and barium sulfate. It also includes opacifying polymeric pigments, such as "Ropaque" available from Rohm and Haas Company, 100 Independence MailWest, Philadelphia, PA, 19106-2399, USA.
    The white base paint is prepared as follows.
    First, a high speed dispersal device (typical size: 110mm diameter) is charged with 15 parts of water from the network. The agitator of the dispersing apparatus is set at low speed (typically 300 rpm) and subcomponents 2 to 6 are added, followed by subcomponents 9 to 11. The agitator speed is then increased to a value higher (typically 1500 rpm) and maintained at this speed for 10 minutes so as to disperse the components. Another 10 parts of the water is then added to dilute the dispersed components, followed by addition of subcomponent 7 and high speed dispersion for another 20 minutes. Then another quantity of 5 parts of water is added. This preparation is called basic preparation.
    The subcomponent 13 is then added to a separate mixing pan (typical pallet size: 150 mm diameter) and the stirrer is started (typical stirring speed 500 rpm). The subcomponents 12.8, the base preparation and 3.8 parts of water are then sequentially added to the separate mixing vessel and the contents are stirred for 10 minutes. For the sake of clarity, it is understood that the term "part" refers to the weight percentage of the white base paint so that, for example, 15 parts of the water of the nozzle correspond to 15% of the weight of the white base paint. It can be seen that all parts of water correspond to 33.8, that is to say, the percentage by weight of water in the basebleach paint.
    The white base paint of Example 1 is prepared so that it has a LRV of at least 93. The A and B diluents and the pigments A and B are chosen according to these LRVs so that they correspond to the requirement for a minimum LRV of white base paint. This selection is based on equation 1 below:
    Equation 1 where W is the weight fraction of the diluent compared to the total weight of one or more white opacifying pigments and one or more diluents. A and F are empirical coefficients which have values of 0.785 and -0.0969, respectively, <Yext> is the weight average photoreflectance value of the opacifying white pigments of one or more diluents and <YPig> is the average photoreflectance value. weight of one or more opacifying white pigments, the weight average photoreflectance values being defined by equations 2 and 3 below:
    Equation 2 Equation 3
    In the example detailed in Table II, the diluents constitute 15.6% by weight of the white base paint and the pigments constitute 19.5% by weight of the white base paint and, consequently, West equal to 0.44% by weight. .
    The application of data in Table II to equations 2 and 3 gives the weight average photoreflectancy value of one or more diluents and one or more opacifying white pigments. Entering these values in Equation 1 gives a LRV (Ym0dèie) of the white base paint of 95.4. The measured LRV of the white base paint is 95.6.
    As a result, it can be seen that the diluents and pigments were specifically selected in both type and quantity material to create a white basecoat that has a minimum LRV of 93. Preparation of a colored coating composition (Example 2)
    The colored coating composition according to Example 2 of Table I was prepared by adding and stirring 0.0176 g of organic colored pigment in the form of CI Pigment Red 112 Monoazo (CAS 6535-4 6-2) at 1298 g (1 liter). of the white base paint of Example 1. The colored pigment is provided as a dispersant (dyestuff) which is also miscible with the white basecoat of Example 1. As an option to the dye agitation, it is also possible to dye and white base paint to produce the colorful coating composition.
    The present invention relates to a colored coating composition having an LRV Y value of less than 110 and greater than that defined in equation 4 below:
    Y = mC + K
    Equation 4 C is the chroma of the colored coating composition and is accordingly limited to 25> C> 1.0.
    The empirical constants m and K are chosen by type, ie, organic or inorganic, and the number of types of color pigments, i.e. one, two, three or more, and are dependent on the angle of shade of the colored coating composition.
    For color region A, m and K are defined in Table III and, for color region B, K are defined according to Table IV.
    Table III

    Table IV
    It is understood that the values of m and K at the intermediate shade angles among those illustrated in Tables III and IV are obtained by linear interpolation.
    As a result, equation 4 defines two minimum LRVs required for color regions A and B depending on the type and number of color pigments used.
    After preparing the baseblock paint of Example 1 and then adding the color pigment, the LRV, shade and chroma of the colored coating composition are measured using a spectrophotometer, the results, together with the minimum required LRV for the coating composition. must be in the range defined by equation4 given in Table V of Annex A.
    To determine whether a garment composition falls within the claimed region defined by equation 4, the LRV, chroma, and shade are measured. The minimum required LRV is calculated using equation 4, using the measured chroma value and m and K, which correspond to the range of measured shade chosen in Table III or IV depending on which Region A or Region B is appropriate. If the measured LRV is greater than the LRV
    minimum required and less than 110, the garment composition falls within the claimed region.
    It can be seen from Table V that the LRV measurement of the colored coating composition of Example 2 is 90.5 and that this value is less than 110 and greater than the minimum LRV of 87.9 according to Equation 4 (Region A ) for the shade and chroma of the colored coating composition.
    The colored coating composition falls within the range defined by equation 4 (region A) due to the selection of a colorfully colored organic pigment of notable occurrence, having no decarbon black pigment, and selecting the opacifying pigments and diluents according to Equation 1 so that the white base paint has an LRV greater than 93, i.e. it will be a clean white base paint.
    For the avoidance of doubt, the noteworthy term will relate to the amount of color pigment required to significantly reduce the brightness of the colored garment composition for a particular chroma. Whether or not the color pigment is considered to be non-commensable will be determined by the amount required to give a color difference, delta E (CIE 1965 observed at 10 °) of 2 for an inorganic pigment and of 3.5 for an organic pigment. The amounts of pigment below these levels are not considered to be commensurable and, therefore, do not constitute a pigment in the context of determining the number of pigments present to determine whether the A or B color region applies to the requirement of a minimum LRV.
    Table IX gives the maximum allowed amounts of the colored pigments used in the white basecoat of Example 1 before it deviates significantly from the brightness of the colored coating composition. This amount is defined by the amount of color pigment which changes the color of the coating composition in the quantities shown. The color change is quantized in terms of delta E for the standard observer at 10 ° as defined by the ICE in 1965 (refer, for example, to "The Reproduction of Color" by RWG Hunt, Wiley, 2004, ISBN 0470024259). Here, the levels have been predicted using the Kubelka-Munk theorem and experimental dispersion and absorption coefficients for basebleach and colored pigments (refer to P. Kubelka and F. Munk, Zeits, f. Physik, (12), 593-601, 1931). They could also be obtained by trial.
    Table IX
    Preparation of other colored coating compositions (Examples 3 to 16)
    Examples 3 to 16 are examples of other colored coating compositions which also use organic colored pigments to give a different shade and chroma. Each of the organic pigments is added to 1298 g of the white base paint of Example 1. The type and amount of color pigment, together with the chroma, shade and minimum required LRV and LRV measured for the colored coating composition are given in US Pat. Tables I and V in the same manner as in Example 2.
    It can be seen in Tables I to V that by supplying a white base paint having an LRV greater than 93 and using one or two colored organic pigments, i.e., a maximum of two organic pigments, and less than 0.015% by weight. Due to the absence of black pigment, the colored coating composition obtained falls within the range of LRVs defined by equation 4 (region A).
    Preparation of another white base paint (Example 17)
    Another white base paint comprises the compounds and amounts as defined in Table VI below:

    Table VI
    The other white base paint of Example 17 is prepared as follows.
    First, a high speed dispersion device identical to that used above is charged with 25 parts of mains water. The agitator of the dispersion device is set at low speed and the subcomponent 2, 0.1 part of the subcomponent 3 are added, followed by subcomponents 9 to 11. The agitator speed is then increased to a higher value. high and the components 12 and 7 are added. The mixture is dispersed for 30 minutes. An additional 12.98 parts of the water is then added to dilute the dispersed components, followed by the addition of 0.1 part of subcomponent 3 and subcomponent 6, the dispersion being made at high speed for 10 minutes. additional. This preparation is called basic preparation.
    The subcomponent 3 is then added to a separate mixing tank identical to that used above and the stirrer is started. The subcomponent 8 and the base preparation are then added to the mixing tank and the contents are stirred for 10 minutes.
    Using the LRV of the pigments and diluents of Table VI, Equation 1 gives the photoreflectance value (Ym0dene) of the whitecoat of a value of 89.7. The measured LRV of white basic paint is 89.2.
    As a result, the white base paint of Example 17 is prepared so that it has an LRV which is below 93, with diluents A, B, and A selected accordingly. The white base paint of Example 17 is therefore a base separately from the clean base of Example 1.
    Preparation of another colored coating composition (Examples 18 and 19)
    The colored coating composition of Example 18 is prepared by adding and stirring 0.725 g of organic colored pigment in the form of a Monoazo Pigment Yellow 74 to 1414 g (1 liter) of the white base paint of Example 17. The color pigment is provided in a stable dispersion (colorant) which is miscible with the white base paint of Example 17 in the same manner that the colored pigments of Examples 2 to 16 were easily miscible with the white base paint of Example 1.
    This colored coating composition has a content of 94.3, a chroma of 15.7 and a measured LRV of 85.9. From Equation 4, the minimum required LRV is 86.3. As a result, it can be seen that the colored coating composition comprising the base paint of Example 17 and the pigment of Example 18 do not fall within the range of Equation 4 (Region A).
    The colored coating composition of Example 19 was prepared using the colored coating composition of Example 18 as a base coat, that is, applied to a surface to be painted first, and then applying a clear topcoat composition comprising a photoluminescent compound in the form of a phosphorescent pigment over the base coat.
    The finish coating composition comprises the components of Table VII below.
    Table VII
    It can thus be observed that the finishing composition does not contain any other pigment color except for the phosphorescent pigment.
    The topcoat composition isprepared as follows.
    First, a mixing tank is charged with 6.26 parts of subcomponent 1 and all subcomponents 2 and 5. While stirring, subcomponents 7 and 8 are added. This mixture is stirred for 2 minutes. additional minutes before adding subcomponents 2 and 3. This mixture is then stirred for a further 10 minutes before adding the subcomponents 6 and 8.72 parts of subcomponent 9. The mixture is stirred for a further 20 minutes, then remaining subcomponent 9 is added slowly while still stirring. The remainder of the subcomponent 1 is then added, the mixture is stirred for an additional 20 minutes and the subcomponent 10 is then added.
    The topcoat composition is then applied to the base coating composition of Example 18.
    It can be seen in Table V that the basecoat composition has an LRV that is outside the range of Equation 4 (Region A). However, when the definition coating composition is applied over the base coat composition. the measured LRV is 85.8, which is higher than the minimum of 84.7 required by equation 4 (region A). It can thus be seen that it is the phosphorescent pigment of the colored topcoat composition that allows the combined base and coating composition to fall within the range of equation 4 (regionA). More specifically, it is the fact that a yellow phosphor is used in the finishing composition which increases the combination chroma due to the presence of the yellow pigment in the base coat.
    On the other hand, it can also be seen that the LRV of the combined base and topcoat composition is obtained using a dirty white basecoat and, therefore, the phosphorescent pigment is able to increase the combined coating composition chroma despite the use of the dirty white base paint.Preparation, other colored coating compositions (Examples 20 and 21)
    Examples 20 and 21 are identical to Examples 18 and 19, except that an organic red pigment is used in the base coat of Example 20 and, consequently, a red phosphor (SA-50 Red, from LawrenceIndustries) is used in the flash finish coating of Example 21.
    A comparison of Examples 20 and 21 shows that it is the use of the red phosphorescent pigment in the clear topcoat which increases the lechroma of the combined coating.
    Preparation of another colored coating composition (Example 22)
    The colored coating composition of Example 22 is prepared by dispersing 5.0 g of a photoluminescent compound in the form of AFN Chartreuse fluorescent pigment (Radiant Color NV, Europark 1046, B-3530 Houthalen, Belgium) in 1414 g ( 1 liter) of the white base paint of Example 17.
    From Tables I and V, it can be seen that the colored coating comprising a mixture of the dirty base layer of Example 17 and the fluorescent pigment falls within the range of Equation 4 (RegionA). As a result, the use of a fluorescent pigment to increase chroma and LRV also applies to a coating composition based on a dirty base. Preparation of other colored coating compositions (Examples 23 and 24)
    The colored coating composition of Example 23 is prepared by adding 0.0740 g of
    magenta colored organic pigment in the form of CI
    Pigment Red 122 Quinacridone at 1414 g (1 liter) of the white base paint of Example 17. It can be seen in Table V that the colored coating composition does not fall within the range of Equation 4 (Region A).
    The colored coating composition of Example 24 is prepared by adding 7.07 g of AFN 18 magenta fluorescent pigment (Radiant Color NV, Europark 1046, B-3530 Houthalen, Belgium) to the colored coating composition of Example 23.
    It is apparent from Tables I and V that the addition of the fluorescent pigment gives a colored coating composition which falls within the range of Equation 4 (Region A).
    Preparation of another colored coating composition (Example 25)
    The colored coating composition of Example 25 was prepared using the colored coating composition of Example 23 as a base coat and then adding a clear topcoat composition containing a fluorescent compound.
    The finish coating composition comprises the components of Table VIIA.

    Table VIIA
    The topcoat composition isprepared as follows.
    First, a high speed dispersion tank as used above is charged with 24.87 parts of subcomponent 1 and 1.108 parts of sub-component 3, the contents being agitated at low speed. Subcomponents 4 and 8 are slowly added and the mixture is stirred for 30 minutes. Subunits 5, 6, 2 and 7 and another 9.59 parts of subcomponent 1 are then added, followed by the slow addition of subcomponent 11. The mixture is then dispersed more rapidly. raised for 60 minutes and the remaining portion of sub-component 1 is added. This preparation is called basic preparation.
    The subcomponent 10 is then added to a separate mixing bowl as used above and the agitator is started. The subcomponent 9 is slowly added, followed by the base preparation. The subcomponent 12 is then added and the contents are stirred for 5 minutes.
    The topcoat composition is then applied over the base coat composition of Example 23.
    It can be seen in Table V that the basecoat composition has an LRV that is outside the range of Equation 4 (Region A). However, when the definition coating composition is applied over the base coat composition. the measured LRV is 68.3, which is above the minimum of 61.9 required by Equation 4 (Region A). As a result, it can be seen that it is the fluorescent pigment of the color-defining coating composition that allows the combined base composition and topcoat to fall into the range of equation 4 (region A). More specifically, it is the fact that a magenta fluorescent pigment is used in the topcoat which increases the leaching of the combined coating due to the presence of the red pigment in the base coat.
    On the other hand, it can also be seen that the LRV of the combined base and topcoat composition is obtained using a dirty white basecoat and, therefore, the fluorescent pigment is able to increase the chroma of the combined coating composition. despite the use of a dirty white base paint.
    It can also be seen that the fluorescent pigment can be used as part of a topcoat composition as well as dispersed in the white basecoat as described by seriefering to the colored coating composition of Example 22.
    Preparation of another colored coating composition (Example 26)
    The colored coating composition of Example 26 is prepared by dispersing 5.0 g of AFN Chartreuse Fluorescent Pigment 10 (Radiant Color NV, Europark 1046, B-3530 Houthalen, Belgium) to 1298 g (1 liter) of the white base paint. own example 1.
    It can be seen from Table V that the fluorescent pigment provides a colored garment composition in a high portion of the film defined by Equation 4 (Region A).
    Preparation of other colored coating compositions (Examples 27 and 28)
    The colored coating composition of Example 27 is prepared by adding 0.0364 g organic colored pigment in the form of IC Pigment Blue 15.3 Phthalocyanine (CAS 147-14-8) to 1414 g (1 liter) of the base coat. Example 17. In Table V, it can be seen that the colored coating composition does not fall within the range of equation 4 (region A).
    The colored coating composition of Example 28 was prepared by adding 84.8 g of photoluminescent compound in the form of a Ciba® üvitex® NFW optical brightener (from Ciba Specialty Chemicals PLC, Charter Way, Macclesfield, Cheshire SK10 2NX) to the composition. colored coating of Example 27.
    It can be seen in Tables I and V that the addition of the optical brightener in a colored garment composition which falls within the range of equation 4 (region A) despite the fact that a dirty white basecoat is used, because of the increase in chroma and the LRV.
    Preparation of another colored coating composition (Example 29)
    The colored coating composition of Example 29 is identical to the colored coating composition of Example 27, except that the organic blue pigment is added to the white base paint of Example 1, that is, ie the clean base paint, as opposed to the dirty white base paint of Example 17.
    It can be seen in Table V that the colored coating composition falls within the range of Equation 4 (Region A).
    Preparation of another colored coating composition (Example 30)
    The colored coating composition of Example 30 was prepared by adding 26.0 grams of optical brightener in the form of Ciba® üvitex® NFW (from CibaSpeciality Chemicals PLC, Charter Way, Macclesfield, Cheshire SK10 2NX) to the composition. colored coating of Example 29.
    It can be seen from Table V that the colored coating composition falls in a high portion of the range of Equation 4 (Region A).
    Preparation of other colored coating compositions (Examples 31 to 44)
    Examples 31 to 44 are examples of other colored coating compositions having different energy and chroma, which use colored pigments in the form of inorganic pigments, in addition to organic pigments in the case of Examples 32, 36, 39, 40, 41, 42, 43, and a decarbon black pigment in the case of Example 44. Examples 31, 33, 34, 35, 37, 38 use only inorganic pigments. Each of the inorganic pigments is added to 1298 g of the white base paint of Example 1. The type and amount of the colored pigment, together with the chroma, the shade and the minimum LRV required and the measured LRV for the colored coating composition are given in Tables I and V in the same manner as for Examples 2 to 30.
    Example 31 and Examples 33 to 35 contain two inorganic color pigments, i.e., plus the maximum of a colored inorganic pigment required for the m and K values pertaining to the color region A and, therefore, the The m and K values in Table IV are entered in Equation 4 to determine the minimum LRV required to fall within the range defined by Equation 4 (Region B). It can be seen in Table V that the colored coating composition of Example 31 falls within the range of Equation 4 (Region B).
    Example 32 contains a colorless inorganic pigment and a colored organic pigment, the pigments have no similar shade, and therefore the values m and K of Table IV are entered in equation 4 to determine the minimum LRV required to be within range defined by equation 4 (region B). It can be seen in Table V that the colored coating composition of Example 32 falls within the range of Equation 4 (Region B).
    Example 36 contains a mixture of a colored organic pigment and a colored organic pigment, but it can be seen in Table IX that the amount of red pigment 112 is below the cell to be significant and, hence, in the In order to determine the color region of interest, Example 36 contains only one inorganic pigment and therefore the values m and K for color region A apply. It can be seen in Table V that the colored coating composition of Example 36 falls within the range of Equation 4 (Region A).
    Example 37 contains two inorganic pigments and hence the values m and K for color region B apply. It can be seen from Table V that the colored coating composition of Example 37 falls within the range of Equation 4 (Region B).
    Example 38 contains two inorganic pigments, but it can be seen in Table IX that the amount of Red 101 pigment is below that required to be significant and that, therefore, in determining the color region in question, Example 38 contains only one inorganic pigment, and hence the values m and K for color region A apply. It can be seen in Table V that the colored coating composition of Example 38 falls within the range of Equation 4 (Region A).
    Examples 39, 40 and 41 contain a mixture of a single colored inorganic pigment and one colored organic pigment, but the two yellow pigments are considered to be of similar shade, this being designated (h) in Table V , and hence the values m and K for the region of color A apply. It can be seen in Table V that the colored coating composition of Examples 39, 40 and 41 falls within the range of Equation 4 (Region A).
    Examples 42 and 43 contain a mixture of two colored organic pigments and one colored organic pigment.
    In the case of Example 42, the amounts of yellow pigment 42 and violet pigment 23 lie below those required to be significant and, consequently, in the context of determining the color region concerned, Example 42 does not contain only one organic pigment and, consequently, the values m and K for the color region A apply. It can be seen in Table V that the coating composition of Example 42 falls within the range of Equation 4 (Region A).
    In the case of Example 43, the amount of blue pigment 15.3 is below that required to be significant and, therefore, in determining the color region of interest, Example 43 contains a only organic pigment and a single inorganic pigment, these pigments having no similar shade. As a result, the values m and K for the region of color B apply. It can be seen from Table V that the colored coating composition of Example 43 falls within the range of Equation 4 (Region B).
    Example 44 contains only an investigating black pigment greater than 0.015% by weight but less than 0.022% by weight of the total dry weight of the colored garment composition. As a result, the values m and K for the color region B apply. It can be seen from Table V that the colored coating composition of Example 44 falls within the range of Equation 4 (Region B).
    Preparation of another white base paint (Example 45)
    Another white base paint comprises the components and quantities as defined in Table VIII below.

    The other white base paint of Example 45 is prepared as follows.
    Firstly, a high speed dispersion device is charged with 4 parts of mains water. The agitator of the dispersing apparatus is set at low speed and the subcomponents 7,3,2,2 Components 4 and 5 are added, followed by subcomponents 9 and 11. The agitator speed is then increased to a higher value and the mixture is dispersed for 10 minutes. Subcomponents 6, 2 and 8 are added. and the mixture is dispersed for 5 minutes. 3 parts of subcomponent 1 are then added. This preparation is called basic preparation.
    The subcomponents 11 and 12 are then added to a separate mixing tank and the stirrer is started. The subcomponent 11, 6.04 parts of subcomponent 1, the base preparation, the amount of 0.1 part of subcomponent 4 and the remainder of the amount of 1.93 part of water are then added in sequence. and the contents are stirred for 10 minutes.
    The white base paint of Example 45 is prepared so that it has an LRV of above 93, the diluent and pigments A and B being selected accordingly. Equation 1 gives the photoreflectance (Ymode) value of the white base paint of Example 45 with a value of 96.7. The measured LRV of the white base paint is 96.1. As a result, the white base paint of Example 45 is a clean base.
    Preparation of another colored coating composition (Example 46)
    The colored coating composition of Example 46 is prepared by adding 0.00503 g of CIPigment Black 7 Carbon Black, 0.134. g of CI PigmentYellow 42 and 0, 000348 g CI Pigment Red 255 DPP, all in the form of stable dispersions (dyestuffs) at 1243 g (1 liter) of the white base paint of Example 45. The colored pigments are supplied in the form of a stable dispersion (dye) which is miscible with the white base paint of Example 45.
    Example 46 contains an investigative black pigment of less than 0.015% by weight of the total dry weight of the colored coating composition. The amount of Pigment Red 255 is not significant and, therefore, the mixture contains a single inorganic pigment and the values m and K for the color region A apply. It can be seen in Table V that the colored garment composition of Example 46 falls within the range of Equation 4 (Region A).
    It can be seen in Table V that the colored coating composition falls within the range of Equation 4 (Region A).
    Preparation of another colored coating composition (Example 47)
    The colored coating composition of Example 47 was prepared by adding 0.130 g of CIPigment Black 7 Carbon Black to 1298 g (1 liter) of the white base paint of Example 45. The pigmented color was provided as a dispersion. stable (dye) which is easily miscible with. white base paint of Example 1.
    Example 47 contains only black pigment in an amount greater than 0.022% by weight of the sectotal weight of the colored coating composition. Parsuite, the values m and K for the color region Bs'appliquer. It can be seen in Table V that the colored coating composition of Example 47 does not fall within the range of Equation 4 (Region B).
    It is understood that if the black depigment limit relates to the use of decarbon black, the limits will vary according to the type of pigment black. For example, a black pigment that is not as intense as carbon black may be added in larger amounts. The criterion for determining the increased permeability of black pigment authorized for other black pigments is the same as that used above, with reference to the determination of the presence of a colored or non-colored pigment in significant quantities, that is to say that other black pigments can be used up to a level which gives a similar color difference in the coating composition.
    For the sake of convenience, the LRV and chroma values for all the examples of the colored garment composition for the two color regions A and B are shown in Figs. 1 and 2. The LRV and chroma values for each coating composition were scaled as shown in the axis labels using the m and K values corresponding to the shade of each coating composition as determined in Tables 3 and 4. Scale scaling divides the LRV and chromapar values intercepts, on each axis, of the line defining the minimum LRV of the garment composition for each shade. This makes it possible to put all the data on a two-dimensional graph.
    As a result, it can be seen that the present invention relates to the creation of colored garment compositions in one or other color region A or B by selecting the number and type of color pigments and formulating the white basecoat to obtain a minimum LRV of 93 or using photoluminescent compounds that are independent of the LRV of the white base paint.
    Annex A




    Table I

    Table V
    权利要求:
    Claims (20)
    [1]
    A colored coating composition comprising a white base paint and at least one colored pigment in a form that can be easily mixed with the white base paint, the white base paint comprising a film-forming polymer, a liquid vehicle, one or more white opacifying pigments and one or several diluents, the colored coating composition having a Y photoreflectance value of less than 110 and greater than that defined by the equation: Y = mC + K where 25> C> 1.0, where C is the chroma of the colored coating composition, m K being empirical coefficients chosen according to the type and number of types of the at least one colored pigment and depending on the shade angle of the coating composition.
    [2]
    A colored coating composition according to claim 1, wherein the white base paint has a minimum photoreflectance value of 93.
    [3]
    A colored coating composition according to claim 1 or 2, wherein the white base paint has a minimum photoreflectance value (Ymode) of 93 defined by selecting one or more opacifying white pigments and one or more diluents according to the equation :

    [4]
    A colored coating composition according to claim 2 or claim 3, as dependent on claim 2, wherein m and K determine a minimum colored coating photoreflectance value relating to a color region A between that minimum and 110, m and K being defined according to the following table:

    [5]
    A colored coating composition according to claim 4, wherein at least one color pigment is a maximum of two colored organic pigments in significant amounts and there is a maximum of 0.015% by weight of carbon black pigment as compared to the dry weight total of the colored coating composition.
    [6]
    A colored coating composition according to claim 4 or 5, wherein the at least one colored pigment is a maximum of a single inorganic pigment in a significant amount and there is a maximum of 0.015% by weight of carbon black pigment relative to the total dry weight of the colored coating composition.
    [7]
    A colored coating composition according to any one of claims 4 to 7, whereinthe at least one color pigment comprises a single organic pigment and a single inorganic pigment, the organic pigment being capable of producing a colored coating composition having a first shade and the inorganic pigment being capable of producing a colored coating composition having a secondness, the first and second grades being separated by a maximum angle of 20 degrees, and there is a maximum of 0.015% by weight of carbon black pigment with respect to total dry weight of the colored coating composition.
    [8]
    A colored coating composition according to claim 2 or claim 3, as dependent on claim 2, wherein m and K determine a minimum photoreflectance value of the colored coating composition relating to a color region B between that minimum and 110, m and ketant defined according to the following table:

    [9]
    9, - A colored coating composition according to claim 8, wherein the at least one color pigment is formed from three or more colored organic pigments in significant amounts and there is a maximum of 0.022% by weight of carbon black pigment compared to the weight dry total of the composition of colored garment.
    [10]
    10. Colored coating composition according to. Claim 8 or 9, wherein the at least one colored pigment is formed from two or more inorganic pigments or more in significant amounts and there is a maximum of 0.022% by weight of carbon black pigment based on the total dry weight of the composition colorful clothing.
    [11]
    A colored coating composition according to any one of claims 8 to 10, wherein the at least one colored pigment comprises a single organic pigment and a single inorganic pigment, the organic pigment being capable of producing a colored coating composition having a first color and the pigment wherein the first and second grades are separated by more than 20 degrees, and there is a maximum of 0.022% by weight of carbon black pigment relative to the total dry weight of the composition of colored clothing.
    [12]
    A colored coating composition according to any one of the preceding claims, in which the at least one of the color pigments is a fluorescent pigment capable of emitting light in a particular part of the visible spectrum so that it increases the chroma of the coating composition. .
    [13]
    A colored coating composition according to any one of the preceding claims, the colored coating composition having a particular shade, the color coating composition further comprising a photoluminescent compound capable of emitting light in a particular part of the visible spectrum so that it increases in color. chroma of the colored coating composition.
    [14]
    The colored coating composition of claim 13, wherein the photoluminescent compound is one or more of an optical unazor, a fluorescent pigment, or a phosphorescent pigment.
    [15]
    The colored coating composition according to claim 14, wherein the optical brightener or fluorescent pigment is dispersed in the white base paint of the colored coating composition.
    [16]
    A colored coating composition according to claim 14, comprising a base coat composition, and a clear coat composition, wherein the defining coat composition comprises the photoluminescent compound so that when the top coat composition is applied over the The photoluminescent compound increases the chroma of the colored composition so that the combined colored coating composition has a photoreflectance value in the color region A.
    [17]
    The colored coating composition according to claim 16, wherein the base coat composition has a photoreflectancy value lower than that required to be in the color A region.
    [18]
    The colored coating composition according to claim 16 or 17, wherein the white base paint of the basecoating composition has a photoreflectance value of less than 93.
    [19]
    The colored coating composition according to any one of the preceding claims, wherein the colored coating composition is an architectural emulsion coating composition suitable for application to walls and / or ceilings.
    [20]
    20. Use of a photoluminescent compound to increase the chroma of a colored coating composition.
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    同族专利:
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    RU2008152074A|2010-07-10|
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    WO2007071331A3|2007-08-23|
    GB0624741D0|2007-01-17|
    AU2006328980B2|2011-12-08|
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    RU2439107C2|2012-01-10|
    TWI410468B|2013-10-01|
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    法律状态:
    2012-12-31| RE20| Patent expired|Owner name: *IMPERIAL CHEMICAL INDUSTRIES PLC Effective date: 20121220 |
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    GBGB0525985.8A|GB0525985D0|2005-12-21|2005-12-21|A coating composition|
    GB0525985|2005-12-21|
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