• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    The present invention relates to novel magenta and cyan colorants for use in waterborne inks exhibiting improved color properties. In particular, these colorants provide magenta or cyan colorants which exhibit increased color space properties, high water solubility, good compatibility with impurities, and corresponding cost-efficiency in flexographic printing processes. Also included in the present invention are methods of using such colorants in flexographic printing processes.
    公开号:KR20030034236A
    申请号:KR10-2003-7004564
    申请日:2001-09-28
    公开日:2003-05-01
    发明作者:해리스필립지；무어패트릭디
    申请人:밀리켄 앤드 캄파니；
    IPC主号:
    专利说明:

    Water-based printing inks exhibiting extended color space characteristics {INKS EXHIBITING EXPANDED COLOR-SPACE CHARACTERISTICS FOR WATER-BASED PRINTING}
    [2] Flexographic printing is widely used as a comprehensive general-purpose method of large-scale printing on paper (eg, on newspapers and flyers) and on cardboard and plastic film substrates. This procedure involves the use of relief-type printing, including raised rubber, and / or the use of a polymer plate, with an image thereon. In these procedures, in order to facilitate the use and removal of organic solvents, certain inks that exhibit very specific physical properties (including but not limited to water-based and low viscosity) are required. Very important in this process is that the ink used should not exhibit appreciable rub-off and therefore have a very short drying time after contact and application on the desired paper substrate surface. It is rather difficult to achieve this requirement for low viscosity water based inks. Examples of such typical flexographic printing inks are described by RHLeach and RJPierce, The Printing Ink Manual (Fifth Edition, Published by Blueprint of London, 1993), which is hereby incorporated by reference in its entirety. ] In Chapter 2 of "Pringting Process" on pages 33 to 42, in particular Section 2.2 of "The Flexographic Process" and in Chapter 9 of "Flexographic Inks" on pages 547 to 598.
    [3] These standard flexographic ink colors are black, yellow, cyan and magenta. While the desired physical properties have been obtained for such standard color inks in the past, unfortunately, as a colorant for a desired printing substrate and as a colorant on the substrate, a coloration characteristic corresponding to a degree that can completely benefit these inks is obtained. Shortage.
    [4] For example, the acceptable color space for these typically used cyan and magenta flexographic inks has been rather limited. The colorability of the sample inks, compounds and / or compositions can be defined mathematically by measuring the individual components of Equation 1 below.
    [5]
    [6] Where
    [7] E * represents the total color measurement of the printed sample,
    [8] L * , a * and b * are the color coordinates, where L * is a measure of the brightness and darkness of the printed sample, a * is a measure of the redness and greenness of the printed sample, and b * is the yellowness of the printed sample And a measure of blueness.
    [9] For further discussion and explanation of this test procedure, see Billmeyer, FW et al., Principles of Color Technology , 2nd Edition, pp. 62-64 and 101-104, which are hereby incorporated by reference in their entirety. See. For the process of printing colors such as magenta and cyan, the desired color properties minimize the inclusion of other processed hues. Mixtures of such colorants are the best examples when the individual processed tones are not affected by other processed tones. However, typical real colors typically exhibit absorption properties outside the pure hue range. Nevertheless, colorants of certain pure absorption measurements are known in the colorant industry to be essential for providing better processed color tone. For example, in terms of content and grade, in the case of magenta, higher redness and blueness are required with much lower yellowness and greenness; For cyan, higher blueness and greenness are required, with lower other colors (redness and yellowness). Ultimately, these measurements primarily determine the efficiency of the colorant for aesthetic purposes. It is also very important for the target colorant to exhibit a particular λ max value in order to determine the appropriate color itself in the relationship between these measurements. For magenta, this value ranges from 525 to 545 nm; The final value for this color is about 534 nm (of course, the measured a * and b * of this color also determine the absorption properties; thus, achieving a particular corresponding level of these measurements yields this particular magenta colorant or Or to assist in obtaining a cyan colorant, as indicated below). To date, this particular λ max for magenta colorants has not been achieved especially for use in water based flexographic inks. Best performing colorants include CIELAB values such as L * = 52.25, a * = 51.60 and b * =-4.48 at about 0.96, the density required to contact and retain on a printing substrate (e.g., cellulosic paper). Rhodamine pigments. Although these measurements are acceptable for certain coloring processes, on the other hand, magenta colorants for waterborne flexographic printing require much better absorption properties to obtain effective shades and hue (color error is such a pigment In the case of, it is relatively high (about 44.9), and the grayness is relatively high (about 16.8). Therefore, there is still a need for improvements consistent with the desired magenta water-based flexographic colorants required for effective and aesthetically satisfactory print coloring. On the other hand, achieving this particular colorant will result in very vivid colors and will provide an effective mixture with other colorants to achieve different colors and tones on the target print surface.
    [10] There is a real need for the same targets for the final target for cyan color representing λ max of about 629 nm (but on the other hand, the a * and b * values for these colorants, on the other hand, substantially determine the desired absorption properties). . Indeed, these theoretical colorants discussed above should also exhibit low color errors and low gray values. Using such a colorant, in particular, the color space will be extended to such an extent that the resulting colorant proves to be very versatile when combined with other colorants as color components.
    [11] In addition, blends of colorants, a particular determining the actual composition, and in or unique in terms as overprint (overprint) on the surface, coloring, brightness, such blends efficiency in terms of overall empirical appearance to be applied to the printing surface of a * And b * values. In addition, blends of these colorants, in terms of magenta and cyan constituents, whereby different color shades such as purple, red and blue, and other shades from them can be obtained, provide the desired level of esthetic quality. Should indicate sufficient and / or acceptable CIELAB values (a * and b * measurements on the other hand). To date, there has been no such necessary blend in the end because of the lack of effective magenta and cyan colorants exhibiting these necessary a * and b * values.
    [12] The diagram of FIG. 1 (individual color space measurements for specific and unique specific cyan and magenta colorants) illustrates how to define typical colorants in acceptable color properties. The area of the color space shown in these diagrams points out the limitations of this typical colorant, in particular due to the high color errors and grayness characteristics produced. This property is problematic in flexographic printing, especially when mixing with other colors is essential for the desired printing substrate and to provide full complement of different colors and tones on the substrate. High color errors can be difficult to produce the desired color (eg purple, red, blue, green, etc.) where cyan and / or magenta components are required. Grayness affects color tone and appearance, and if this property is too high, especially when such colorants are used in combination with others, phenomena will become universally cloudy (in fact, grayness is a color combination). Similar to the effect of adding black components in water). As a result, or in connection with the above coloring properties, each of the low color properties is obtained, a colorant with increased color space properties is also obtained. Generally, standards for flexographic printing include target measurements for such colorants, including magenta color errors in the range of 58 to 63, gray level averages of 15 in the range of 13 to 17, and ink density measurements of about 0.97. For cyan colorants, these measurements are 33, preferably 31-35 ° color error, aiming for 15 gray degrees in the 13-17 range, and ink density of about 0.95. Thus, the best colorants available today represent this high measure. However, there is a recognized need for such lower color errors and grayness characteristics that have at least the same general density characteristics. With this reduction in color error and gray scale measurements, the area within the “triangle” shown in FIG. 1 will expand to provide a more versatile colorant than the colorants typically used today. Thus, there is a great need for magenta and cyan water-based colorants which are particularly suitable for flexographic printing, which exhibit very low but previously unachievable low gray and low color error properties. On the other hand, to date, this particular type of water-based colorant has not been taught or explicitly proposed in the prior art and / or has not been used in the printing industry.
    [1] The present invention relates to certain colorants for use in water-based inks that exhibit improved color properties. In particular, these colorants provide magenta or cyan colorants which exhibit increased color space properties, high water solubility, good compatibility with impurities, and corresponding cost-effectiveness in flexographic printing processes. Also included in the present invention are methods of using such colorants in flexographic printing processes.
    [13] As discussed below, FIG. 1 depicts the color space characteristics as dropped on a newspaper surface in graphical form of a particular colorant.
    [14] It is therefore an object of the present invention to provide an improved water based ink composition comprising at least one magenta or cyan colorant (including dyestuffs, dyes, pigments, etc.) exhibiting the above-described very desirable low grayness and color error properties. . Another object of the present invention is to provide a magenta or cyan colorant which exhibits an average color error reduction of at least 2 ° compared to the standard water based magenta or cyan colorants used today. It is a still further object of the present invention to provide an aqueous magenta or cyan colorant which provides a bright and effective colorant product for use during a flexographic printing process when mixed with other standard waterborne colorants. It is important to note that all the color properties of the colorants of the invention and their inks as well as the typical (and thus comparable) colorants and inks thereof are based on the actual printed samples of these formulations. Such verification of color space, grayness, color error, etc. can only be analyzed and measured after printing.
    [15] Thus, the present invention, when incorporated into a water-based ink at a density of about 0.95 to about 1.05 and applied to paper, the printing of at least 52 a * and 0 or less b * , or 45 or more a * and -4.6 or less b * CIELAB values (each with an L * value of about 54 or greater, 40 or less, preferably 35 or less, more preferably 30 or less, most preferably about 25 or less, and 15 or less, preferably about 14 or less , More preferably 13.75 or less, most preferably having a gray scale measurement of about 13.5) (e.g., exhibiting color characteristics of λ max about 543 nm). Preferably, such magenta colorants exhibit values of a * of at least 52 and b * of at most -4.6, particularly preferably at least 52.2 and a * and -19.8 of b * . For the same density and L Lithol Rubin ink for comparison (lithol rubine) of about 61.02, printing is 45.31 the a *, b *, has a gray level of 63.0 color error, and 20.0 for the 5.98, the most similar known in the art The rhodamine pigment, which is a magenta colorant, cannot meet these requirements defined by the range by the colorant of the present invention. Therefore, the present invention also relates to the improvement of the color tone between magenta colorants of the expanded color space of the present invention (as examples known to be the most similar) and such comparative standard litorubin and rhodamine pigments.
    [16] In addition, the present invention, when incorporated into a water-based ink at a density of about 0.95 to about 1.05 and applied to paper, prints of a * below -26 and b * below -27, or a * below -27 and -25 CIELAB values of b * below (each having an L * value of about 54 or more, preferably 30 or less, preferably 28 or less, more preferably about 26 or less, most preferably about 24 or less, and 15 or less, preferably Preferably cyan colorants (eg, exhibit color properties of lambda max about 629 nm), indicating a gray scale measurement of about 14.5 or less, more preferably 14 or less, most preferably about 13.75. Preferably such cyan colorant exhibits a * of -28.27 or less and b * of -22.12 or more. For copper phthalocyanine comparison inks of the same density and L of about 55.52 (the most similar known comparative example), printing yields a * of about -24.53, b * of about -27.15, color error of 32.5 and grayness of 15.0. Have Accordingly, the present invention also relates to the improvement of the color tone between the cyan colorant of the expanded color space of the present invention and this standard colorant as the aforementioned copper phthalocyanine pigment. The present invention also relates to an aqueous ink comprising the colorant of the invention described above, which is present as a sole colorant or combined with other known or inventive colorants, pigments, dyes, dyestuffs and the like. Further, the present invention, when printing on a substrate at a density of 0.95 to 1.05 (for magenta-containing blends), has a * of at least 47 and b * of at most 0, or a * of at least 45 and b * of -0.5 or less It is related with the blend of the coloring agent which shows the CIELAB value of. Alternatively, for cyan-containing blends, the present invention relates to blends of colorants which exhibit a CIELAB value of a * below -25 and b * below -24 when printed on a substrate at a density of 0.95 to 1.05. . The invention also relates to a flexographic printing method comprising the use of any of the aforementioned colorants and / or inks which exhibit CIELAB values as indicated above in the range to which the desired coloring is applied, and colored printed substrates. will be.
    [17] Colorants, as indicated above (and therefore as components in the blends described above), include any compound selected from the group consisting of at least a polymer colorant, at least one dyestuff, at least one dye, at least one pigment, and any mixtures thereof. . Specifically, the colorants of the present invention should include at least one colorant that exhibits increased color space properties compared to those of the typical colorants known to be the best of the same type. Such colorants are preferred but not necessary if they are of the cyan or magenta type. Non-limiting examples of suitable choices as chromophores only belonging to the colorants of the present invention include, for example, rhodamine, dyes and polymer colorants for magenta colorants, and blue polymer colorants (for example, Milliken and Campa for cyan colorants). Acid Blue 9, such as those available from Milliken & Company. As noted above, overprinting blends of these colorants with other components fall within the scope of the present invention, as long as one or more components of such overprints are the colorants of the present invention as defined and discussed herein.
    [18] Typically, such colorants are generally not present alone and / or used in aqueous formulations, but may be used as resins (e.g., Jonryl® manufactured by SC Johnson & Son). In combination with the water-soluble properties. In addition, addition of sterically hindered adducts (such as dimethylethanolamine, etc.) to polymeric colorants and dyestuffs provides protection against the chromophore itself, such that reactions with bases and the like present in the final ink composition may be present in color-based formulations. It has been found that it may not occur immediately. As a result, the colorants of the present invention have been found to be insensitive to such basic attack and thus exhibit the desired color properties as discussed above. In addition, the presence of such sterically hindered adducts (eg, di-C 1 -C 10 -alkyl-C 2 -C 4 -alkanolamines) on the colorants of the present invention do not affect solubility and therefore resin-reacted colorants Solubility in is maintained at its desired level. In addition, even when the colorant is present in an aqueous solution, its viscosity is not affected by the presence of such adducts. As pointed out above, the color provided is particularly good in terms of color error, grayness, and ultimately color space characteristics described above. In addition, the presence of such hindered amine adducts provides greater resistance to any impurities present in the aqueous ink composition. For example, as noted above, any basic compound or solvent will not adversely affect the colorant when an adduct is present. Other impurities such as biocide, antifoam, etc. will not react or affect any recognizablely with the same colorant. This resistance to impurities appears to in fact provide the desired color properties compared to the typical colorants. As a result of all these properties, the colorants of the present invention are very stable when used in a variety of different ink compositions, especially when mixed with other colorant compositions to provide different hues and colors to the user. Recently, the density provided by this colorant of the present invention is approximately the same as that intended for use in flexographic printing processes.
    [19] In particular, as optional additives, as discussed above, aqueous solutions or emulsion resins present to adjust the viscosity of the final ink formulation and to increase film strength are preferred. Such resins include, but are not limited to, acrylic materials, acrylic latexes, protein-based materials, and urethanes. As the resin for this composition, carboxylated acrylic materials, polyvinyl alcohol, hydroxyethyl cellulose and polyvinyl pyrrolidone can be used but their use is limited due to their low level of water solubility. These resins are preferably acrylic based and constitute 0 to about 40% of the total ink composition. Particularly preferred acrylic resins are acrylic solution resins such as S.C. Joncryl® 60, manufactured by SCJohnson & son, Inc., Morcryl, manufactured by Morton International, Inc. (Morcryl®) 132 and 150; Acrylic emulsion resins such as S.C. John Creel® 537, 540, 1954, SCX-2153 and SCX-2155 manufactured by Johnson & Sons Inc .; Styrenated acrylic emulsion resins such as S.C. John Cryl® 89 and 130, manufactured by Johnson & Sons Inc., Lucidene 602, B.F., manufactured by Morton International Inc. Zinpol® 460 manufactured by B.F. Goodrich; Acrylic colloidal emulsion resins such as S.C. John Cryl® 142 and SCX-646 manufactured by Johnson & Sons Inc .; Acrylic copolymer emulsion resins such as NeoCryl® XA-590, and B-817 manufactured by ICI Resins; And Luciden® 1500 manufactured by polyester-styrene acrylic resins such as Morton International Inc. Most preferred acrylic resins are S.C. There is John Cryl® 130, a styrenated acrylic emulsion manufactured by Johnson & Sons Inc., which increases water fastness. These resins are generally neutralized with ammonia to increase their solubility. In addition, potential resin constituents of the compositions of the present invention are those with low viscosity that provide the most effective depth of color on the printing substrate. Preferably, the resin is present in an amount sufficient to provide an ink composition having a viscosity of about 10 to about 26 seconds, most preferably about 22 seconds or more, as tested using a # 2 Shell Cup. (As a comparison, water itself shows a viscosity of about 8.9 seconds under this test). Generally, the amount comprises about 5 to about 40 weight percent of the total ink composition. It is also very important for the compositions of the present invention to use soft water or deionized water to dilute the dark liquid colorant prior to compounding the ink composition. Hard water or tap water may contain calcium or other metal ions that may be complexed with the aforementioned resins, thereby effectively increasing the overall viscosity of the composition.
    [20] Thus, the colorants of the present invention make it possible to use these colorants alone in water-based inks as well as such high color space colorants combined in ink compositions. It is also recognized that such high color space magenta and cyan colorants of the invention can be mixed with other types of lower color space colorants (such as pigments) to provide brighter coloring of the desired color and color tone. very important.
    [21] Preferred methods for preparing the colorants of the present invention include, but are not limited to:
    [22] Example 1 (magenta dye according to the invention)
    [23] Ink composition was prepared from Rhodamine B dye (available from Aldrich [CAS 81-88-9], reacted with about 0.9 parts of dimethyl ethanolamine (DMEA), about 80% dye content) Prepared via a mixture of colorant and about 20.8 g of water. The resulting slurry was mixed until the dye dissolved in an aqueous solution to give a clear dark red liquid with a pH of about 8.45.
    [24] 5.3 parts of Jonacryl® 60 acrylic solution resin, 2.4 parts of water and DMEA to produce a liquid having a viscosity of 22 seconds as measured with a # 2 shell cup at pH about 9.5 at about 4.9 parts of the resulting clear red liquid. Add 1.5 parts. The red ink was then dropped on a newspaper substrate with a hand proofer to a density of 0.98 (print + paper). In addition, the lambda max of the colorant of the present invention was measured to be about 534 nm.
    [25] Example 2 (magenta polymer colorant according to the invention)
    [26] 48.7 parts of a polymer colorant (LiquiTone® Magenta 418 available from Milliken & Co.) to produce an ink composition having a viscosity of 22 seconds as measured by a # 2 shell cup at pH 9.5. 12.2 parts of Johnkrill® 130 acrylic emulsion and 1.3 parts of (DMEA) and about 37.8 parts of water. The resulting polymer colorant ink was then dropped onto the newspaper substrate with a hand proofer to a density of 1.0 (printing + paper).
    [27] Example 3 (comparative)
    [28] 50.0 parts of Acroverse® 32R80D litol rubin pigment (available from Pen Color) to produce a liquid exhibiting a viscosity of 22 seconds when measured with a # 2 shell cup at pH 9.5. , 15.5 parts of water, and 34.5 parts of Joncryl® 60 acrylic emulsion. The resulting red pigment ink was dropped on a newspaper substrate with a hand proofer to a density of 1.0 (printing + paper).
    [29] Example 4 (combination of dyes and pigments according to the invention)
    [30] Ink was prepared through a mixture of 5.8 parts of the ink of Example 1 and 6.1 parts of the ink of Comparative Example 3. The resulting red pigment ink was dropped on a newspaper substrate with a hand proofer to a density of 1.0 (printing + paper).
    [31] Example 5 (combination of polymer colorants and pigments according to the invention)
    [32] 32.8 parts of water, 24.3 parts of magenta 418 polymer colorant, 21.1 parts of litholrubin pigment dispersion (as from Example 3 above) to produce a liquid having a viscosity of 22 seconds when measured with a # 2 shell cup at pH 9.5 , 21.2 parts of Johnkrill® 130 acrylic emulsion, and 0.6 parts (DMEA). The resulting polymer colorant ink was then dropped onto the newspaper substrate with a hand proofer to a density of 1.0 (printing + paper).
    [33] Example 6 (cyan dye according to the invention with blue pigment)
    [34] An ink was prepared by mixing 17.8 parts of the Acid Blue 9 ink according to the invention (Example 9) below and 82.2 parts of the copper phthalocyanine ink of Example 8 below. The blue dye and pigment ink mixture was dropped onto the newspaper with a hand proofer to give a density T of 0.99 (printing + paper).
    [35] Example 7 (cyan polymer colorant according to the invention with a blue pigment)
    [36] The ink was charged with 36.1 parts of water, blue 892 (Milliken polymer colorant, see Example 10 below for homopolymer colorant according to the present invention), copper phthalocyanine pigment dispersion (Pen Color Acrobus® 32S34D) 21.1 parts, and 31.6 parts of John Cryl® 60 acrylic emulsion resin were mixed and the viscosity was 22 seconds as measured by the # 2 shell cup. The polymer colorant ink was dropped onto the newspaper substrate with a hand proofer to have a density T of 1.0 (printing + paper).
    [37] Example 8 (comparative single blue pigment)
    [38] Comparative inks were made from 30.2 parts of Acrobus® 32S34D, 30.6 parts of water and John Krill®, a copper phthalocyanine pigment dispersion (manufactured by Pen Color Incorporated, Doylestown, Pennsylvania). Prepared by dispersing 39.2 parts of the acrylic solution resin, the viscosity was 22 seconds as measured by the # 2 shell cup. The blue pigment ink was dropped on the newspaper with a hand proofer to have a density T of 1.0 (printing + paper).
    [39] Example 9 (cyan dye according to the invention)
    [40] An ink was prepared by mixing 83.15 parts of water, 14.65 parts of Acid Blue 9 dye (Aldrich [CAS 2650-18-2]), and 2.20 parts of dimethyl ethanolamine (DMEA). The slurry was mixed until the dye dissolved to give a clear dark blue liquid of pH 8.5.
    [41] 22.4 parts of Joncryl® 60 acrylic solution resin and 10.1 parts of water were added to 67.5 parts of the Acid Blue 9 solution, and the viscosity was 22 seconds as measured by a # 2 shell cup. Blue ink was dropped on a newspaper with a hand proofer to give a density T of 0.99 (printing + paper).
    [42] Example 10 (cyan polymer colorant according to the invention)
    [43] The ink was prepared by mixing 48.8 parts of water, 37.4 parts of Blue 892 (Milliken polymer colorant) and 13.8 parts of Joncryl 130 acrylic emulsion resin, having a viscosity of 22 seconds as measured by a # 2 shell. The polymer colorant ink was dropped onto the newspaper with a hand proofer to give a density T of 0.99 (printing + paper).
    [44] Example 11 (Comparative Blend of Rhodamine Pigment and Ritol Rubin Pigment)
    [45] Ink was prepared through a mixture of the same portion of the ink of Example 3 and the rhodamine pigment. The resulting red ink mixture was dropped on a newspaper with a hand proofer to a density of 0.97 (print + paper).
    [46] Analysis of the resulting composition
    [47] All ink samples were tested for their coloring power by measuring the individual components of Equation 1 below.
    [48] Equation 1
    [49]
    [50] Where
    [51] E * represents the total color measurement of the printed sample,
    [52] L * , a * and b * are the color coordinates, where L * is a measure of the brightness and darkness of the printed sample, a * is a measure of the redness and greenness of the printed sample, and b * is the yellowness of the printed sample And a measure of blueness.
    [53] This measurement is the value of the colorant printed on the printing surface by the X-Rite Model 938 spectrodensimeter. The results of Examples 1-10 are shown in Table 1 below:
    [54] sampleLa * b * Color errorGray road Example 154.0052.20-19.8021.613.5 Example 253.4552.80-17.2824.213.9 Example 3 @61.0245.315.9863.020.0 Example 451.0248.31-0.9850.017.8 Example 552.6348.73-2.1849.017.3 Example 656.92-26.95-24.9429.114.7 Example 756.46-26.91-25.1429.215.1 Example 8 @55.52-24.53-27.1532.515.0 Example 959.93-30.54-22.4520.613.9 Example 1059.29-28.27-22.1223.413.7 Example 11 @51.8545.893.0757.919.7 @ = Comparative pigment or blend
    [55] Thus, the colorants and compositions of the present invention containing such colorants exhibit much better color error and grayness measurements than typical pigments used in water-based inks. As a result, such colorants of the present invention are particularly excellent in providing bright and effective coloration in flexographic printing methods in combination with other colorants other than the present invention in order to provide particularly desirable colors and hues. In addition, the a * and b * values for these colorants of the invention specify the required and desired increased color space compared to the two comparative pigments.
    [56] The colorants and blends of Examples 1, 4, 6 and 9 were then applied flexographically to the paper substrate to simulate newspaper printing. Coloring was bright and excellent.
    [57] Detailed description of the drawings
    [58] The diagram of FIG. 1 shows the limited color space properties of standard colorants (eg pigments) currently used, in combination with colorants that have been determined to provide more effective and brighter coloring for water based ink processes. This increase in the specific coloring properties of the colorants of Examples 1, 9 and 10 is at least in relation to the desired properties of the typical colorants (ie higher blueness for cyan and more for magenta, as in the example). High redness). As such, when the colorant of the present invention is printed on a specific substrate, it is possible to obtain characteristics such as color space, color error, grayness, and the like, which are much improved than the colorants of conventional pigments which are currently widely used in water-based flexographic printing methods. It becomes clear to provide.
    [59] Of course, there are many other embodiments and variations of the invention, which are included within the spirit and scope of the present application.
    权利要求:
    Claims (49)
    [1" claim-type="Currently amended] Magenta colorants exhibiting CIELAB values of at least 52 a * and at most 0 b * when applied to a printing substrate at a density of about 0.95 to 1.05.
    [2" claim-type="Currently amended] The method of claim 1,
    And the printed colorant exhibits a color error of 40 or less and a grayness of 15 or less.
    [3" claim-type="Currently amended] The method of claim 2,
    And the printed colorant exhibits a color error of 35 or less and a grayness of 14 or less.
    [4" claim-type="Currently amended] The method of claim 3, wherein
    And the printed colorant exhibits a color error of 30 or less and a grayness of 13.75 or less.
    [5" claim-type="Currently amended] The method of claim 4, wherein
    And the printed colorant exhibits a color error of 25 or less and a grayness of 13.5 or less.
    [6" claim-type="Currently amended] The method of claim 1,
    And the printed colorant exhibits at least 52 a * and at most −4.6 b * .
    [7" claim-type="Currently amended] The method of claim 6,
    And the printed colorant exhibits a * at least 52.2 and b * at −19.8 or less.
    [8" claim-type="Currently amended] When applied in a density of about 0.95 to 1.05 on the printing substrate, the magenta coloring agent showing a CIELAB b * value of less than 45 and a * -4.6.
    [9" claim-type="Currently amended] The method of claim 8,
    And the printed colorant exhibits a color error of 40 or less and a grayness of 15 or less.
    [10" claim-type="Currently amended] The method of claim 9,
    And the printed colorant exhibits a color error of 35 or less and a grayness of 14 or less.
    [11" claim-type="Currently amended] The method of claim 10,
    And the printed colorant exhibits a color error of 30 or less and a grayness of 13.75 or less.
    [12" claim-type="Currently amended] The method of claim 11,
    And the printed colorant exhibits a color error of 25 or less and a grayness of 13.5 or less.
    [13" claim-type="Currently amended] Cyan colorant exhibiting CIELAB values of a * below -26 and b * below -27 when applied to a printing substrate at a density of about 0.95 to 1.05.
    [14" claim-type="Currently amended] The method of claim 13,
    And the printed colorant exhibits a color error of 30 or less and a grayness of 15 or less.
    [15" claim-type="Currently amended] The method of claim 14,
    And the printed colorant exhibits a color error of 28 or less and a grayness of 14.5 or less.
    [16" claim-type="Currently amended] The method of claim 15,
    And the printed colorant exhibits a color error of 26 or less and a grayness of 14 or less.
    [17" claim-type="Currently amended] The method of claim 16,
    And the printed colorant exhibits a color error of 24 or less and a grayness of 13.75 or less.
    [18" claim-type="Currently amended] The method of claim 13,
    And the printed colorant exhibits a * of −28.27 or less and b * of −22.12 or less.
    [19" claim-type="Currently amended] Cyan colorant exhibiting CIELAB values of a * below -27 and b * below -25 when applied to a printing substrate at a density of about 0.95 to 1.05.
    [20" claim-type="Currently amended] The method of claim 19,
    And the printed colorant exhibits a color error of 30 or less and a grayness of 15 or less.
    [21" claim-type="Currently amended] The method of claim 20,
    And the printed colorant exhibits a color error of 28 or less and a grayness of 14.5 or less.
    [22" claim-type="Currently amended] The method of claim 21,
    And the printed colorant exhibits a color error of 26 or less and a grayness of 14 or less.
    [23" claim-type="Currently amended] The method of claim 22,
    And the printed colorant exhibits a color error of 24 or less and a grayness of 13.75 or less.
    [24" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 1.
    [25" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 6.
    [26" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 7.
    [27" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 8.
    [28" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 13.
    [29" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 18.
    [30" claim-type="Currently amended] Aqueous ink containing the coloring agent of Claim 19.
    [31" claim-type="Currently amended] A blend of colorants exhibiting a CIELAB value of at least 47 a * and at most 0 b * when applied to a printing substrate at a density of about 0.95 to 1.05.
    [32" claim-type="Currently amended] The method of claim 31, wherein
    Blends of colorants representing at least 48 a * and -0.5 or less b * .
    [33" claim-type="Currently amended] When applied in a density of about 0.95 to 1.05 on the printing substrate, at least 45 and a * -0.5 b * of the colorant blend of the following values indicating the CIELAB.
    [34" claim-type="Currently amended] A blend of colorants exhibiting a CIELAB value of a * below -25 and b * below -24 when applied to a printing substrate at a density of about 0.95 to 1.05.
    [35" claim-type="Currently amended] The method of claim 34, wherein
    Blend of colorants exhibiting a CIELAB value of a * of -26.5 or less and b * of -24.5 or less.
    [36" claim-type="Currently amended] Flexographic printing of a substrate comprising (a) providing the water based ink of claim 24, (b) providing a printing substrate, and (c) flexographically contacting the water based ink to the printing substrate. Way.
    [37" claim-type="Currently amended] Flexographic printing of a substrate comprising (a) providing the water based ink of claim 25, (b) providing a printing substrate, and (c) flexographically contacting the water based ink to the printing substrate. Way.
    [38" claim-type="Currently amended] 28. Flexographic printing of a substrate comprising the steps of: (a) providing the water based ink of claim 26, (b) providing a printing substrate, and (c) flexographically contacting the water based ink to the printing substrate. Way.
    [39" claim-type="Currently amended] 28. Flexographic printing of a substrate comprising the steps of: (a) providing an aqueous ink of claim 27, (b) providing a printing substrate, and (c) flexographically contacting the aqueous ink to the printing substrate. Way.
    [40" claim-type="Currently amended] Flexographic printing of a substrate comprising (a) providing the water based ink of claim 28, (b) providing a printing substrate, and (c) flexographically contacting the water based ink to the printing substrate. Way.
    [41" claim-type="Currently amended] Flexographic printing of a substrate comprising (a) providing the water based ink of claim 29, (b) providing a printing substrate, and (c) flexographically contacting the water based ink to the printing substrate. Way.
    [42" claim-type="Currently amended] Flexographic printing of a substrate comprising the steps of: (a) providing the water-based ink of claim 30, (b) providing a printing substrate, and (c) flexographically contacting the water-based ink to the printing substrate. Way.
    [43" claim-type="Currently amended] A flexographic of a substrate comprising (a) providing a blend of the colorant of claim 31, (b) providing a printing substrate, and (c) flexographically contacting the water-based ink to the printing substrate. Printing method.
    [44" claim-type="Currently amended] Flexographic of a substrate comprising (a) providing a blend of the colorant of claim 32, (b) providing a printing substrate, and (c) flexographically contacting the aqueous ink to the printing substrate. Printing method.
    [45" claim-type="Currently amended] A flexographic of a substrate comprising (a) providing a blend of the colorant of claim 33, (b) providing a printing substrate, and (c) flexographically contacting the aqueous ink to the printing substrate. Printing method.
    [46" claim-type="Currently amended] A flexographic of a substrate comprising (a) providing a blend of the colorant of claim 34, (b) providing a printing substrate, and (c) flexographically contacting the aqueous ink to the printing substrate. Printing method.
    [47" claim-type="Currently amended] At least a portion of the substrate is flexigraphed with a colorant, the colored printed portion of the substrate exhibits a CIELAB value of a * of at least 47 and b * of 0 or less, wherein the colored printed portion has a density of 0.95 to 1.05 A flexographic printing substrate, applied to the surface of the substrate.
    [48" claim-type="Currently amended] At least a portion of the substrate is flexigraphed with a colorant, the colored printed portion of the substrate exhibits a CIELAB value of a * of at least 45 and b * of at most -0.5, wherein the colored printed portion is from 0.95 to 1.05 A flexographic printing substrate, applied to the substrate surface at a density.
    [49" claim-type="Currently amended] At least a portion of the substrate is flexigraphed with a colorant, the colored printed portion of the substrate exhibits a CIELAB value of a * of −25 or less and b * of −24 or less, wherein the colored printed portion is from 0.95 to A flexographic printing substrate, applied to the substrate surface at a density of 1.05.
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    同族专利:
    公开号 | 公开日
    CN1466616A|2004-01-07|
    JP2004510029A|2004-04-02|
    US20030200887A1|2003-10-30|
    US6834589B2|2004-12-28|
    WO2002026902A2|2002-04-04|
    MXPA03002614A|2003-06-19|
    US6610131B2|2003-08-26|
    AU9693401A|2002-04-08|
    CA2423236A1|2002-04-04|
    WO2002026902A3|2002-10-31|
    US20020040659A1|2002-04-11|
    EP1322713A2|2003-07-02|
    CN1283732C|2006-11-08|
    BR0114317A|2003-08-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-09-29|Priority to US23677600P
    2000-09-29|Priority to US60/236,776
    2001-09-28|Application filed by 밀리켄 앤드 캄파니
    2001-09-28|Priority to PCT/US2001/042380
    2003-05-01|Publication of KR20030034236A
    优先权:
    申请号 | 申请日 | 专利标题
    US23677600P| true| 2000-09-29|2000-09-29|
    US60/236,776|2000-09-29|
    PCT/US2001/042380|WO2002026902A2|2000-09-29|2001-09-28|Inks exhibiting expanded color-space characteristics for water-based printing|
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