• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. METHOD FOR OBTAINING A CATIONIC ADSORBENT by reacting a condensation product of formaldehyde with urea or melamine with a compound containing amide groups, -O and so that, in order to obtain adsorbents with a high adsorption capacity with respect to the dye m, as a condensation product of formaldehyde with urea or melamine, use a product that does not contain primary amino groups, and as a compound containing amide groups, is a compound of general formula RI V QN - (l, -CO-NH And I ut. ,, .R and - hydrogen, ethyl or Q -CONH, R and R together with the nitrogen atom linked to them form a piperidine cycle, or R and Ri together with the group NQN; form the piperazine cycle; Q - .- or, or X is hydrogen or; m is O or 1. 2. The method according to claim 1, is different from the fact that N, K-dimethylurea, N are used as non-L products of formaldehyde condensation of formaldehyde with urea or melamine. , M, N trimethylolmelamine or N, N, N-hexamethylolmelamine. 3. The method according to claim 1, wherein the interaction is carried out in the presence of sulfamic acid as a catalyst. Priority points: 28.06.79pp. 1 and 2 | 04.02.80 to p.З. .. ate
    公开号:SU1020005A3
    申请号:SU802936512
    申请日:1980-06-25
    公开日:1983-05-23
    发明作者:Ф.Вурстер Рудольф；Мерц Юрг
    申请人:Циба-Гейги Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the preparation of polymeric adsorbents used for the treatment of wastewaters in paints, textiles and other industries in which dyes are used. Polymer cationic adsorbents containing nitrogen atoms in the main chain, for example, obtained by reacting urea or melamine condensation products with formaldehyde with acrylamide, are known. The amide amide containing the amide containing free amino groups Zj. The aim of the invention is to obtain adsorbents with a high absorption capacity with respect to dyes. This goal is achieved by the fact that according to the method for producing a cationic adsorbent by reacting a formaldehyde condensation product with urea or melamine with a compound containing amide groups, As a product of formaldehyde condensation with urea or melamine, a product not containing primary amino groups is used, and as a compound containing amide groups, a compound of common pho Nf -Nf- r O 2 I kjl mules where R, R and RJ are hydrogen, ethyl or (It-CONHj, R and R together with the nitrogen atom linked to them form a piperidine cycle or R together with the group -N- ( lN v breaks the piperazine cycle; Q -, - or, -CH -; QI -CHi or; XH or -SHPOH; m is O or 1. Preferably, as a primary amino group-containing condensation product of formaldehyde with urea or melamine use N-, N-dimethylurea, N, N, N, N-trimethylmelamine or N, N, N -hexamethylol melamine. It is preferred that the reaction is carried out in the presence of sulfamic acid as a catalyst. The reaction is carried out in a neutral or acidic medium, for example, at pH values of 2-7 and at 20-200 ° C, preferably at 50ISO C, and in particular 60-12QC. The resulting reaction product contains at least 1 wt., Preferably 2-6 wt.%, Nitrogen, having basic properties. The total nitrogen content that includes such amide nitrogen is typically at least 10% by weight, preferably 1530% by weight. The adsorbent can be used to remove anionic type substances from. AQUEOUS solutions, in particular from wastewater, and the performance of the adsorbent is significantly higher than the performance achieved with the use of traditional adsorbents. In comparison with known means, for example, activated carbon, as well as adsorbents, obtained by a known method, the proposed adsorbent is characterized by a high absorption capacity with respect to a substance having an anionic character dissolved or dispersed in water. In particular, anionic dyes, surfactants, tanning agents, bleaches, auxiliary substances used in dyeing and in the textile industry, as well as mixtures of these substances, can be extracted from wastewater with satisfactory results. Wastewater may be treated, which contains mixtures of anionic dyes with anionic-type excipients. Among dyes that can be removed from wastewater, both water-soluble and water-dispersed anionic dyes or optical brighteners can be indicated. Advantageously, the proposed method is suitable; to remove water-soluble anionic dyes or optical brighteners. Adsorbents are not only suitable for discoloration of waste
    solutions formed in the dyeing business of the textile, paper or textile industries, but also when it is necessary to remove residues of anionic optical brighteners from washing and bleaching solutions.
    Another advantage of the new cationic adsorbent is that, at least partially, non-ionic and anionic surfactants and aids used in the textile and dyeing industries, as well as phosphates, are eliminated from the aqueous waste bath.
    A cationic adsorbent can also be of assistance when it comes to removing anionic synthetic tannins, especially tannins that contain one or more sulfo groups in the molecule.
    As a result of a suitable choice of adsorbing agent, up to 100 dissolved impurities can be removed from the in-line water. At the same time, the effectiveness of wastewater treatment can reach 50 g of residual substances. Those. dyes, optical brighteners, auxiliary substances, detergents, tannins per 100 g of adsorbent. Preferably, waste solutions are subjected to discoloration, the dye concentration of which is 0, OT-1 g / l. In those cases in which it is not possible to achieve complete discoloration or removal of residues in, the result of a single treatment
    waste solution with a new adsorbent, it is recommended to repeat the cleaning process.
    After adsorption of impurities, the adsorbing agent can be easily separated from the purified waste water. The adsorbent is characterized by a high solids content and, for this reason, it can be burned up without a drying process. The adsorbent can also be subjected to regeneration as a result of treatment, for example, with a dilute aqueous solution of sodium hydroxide.
    In the examples, the percentages
    5 in all cases, are weight percentages.
    Example 1. 8.6 t 0; aqueous solution of the compound formul1.
    0
    (С gHs) g N - СНг-СНг- CONH- CHg ОН
    mixed with t, 8 g of N, H-dimethylolurea, after which by adding concentrated hydrochloric acid the pH of the mixture is adjusted to a value of 3. Then the acidified mixture is heated to 150 C with vigorous stirring at a specified temperature for
    15 min, with this, the water is removed and the reaction mass becomes solid. After the condensation reaction has been carried out for a further 15 hours, 8 g of condensation product with nitrogen content of 22.4% is obtained.
    Examples 2-9. The method is carried out according to the procedure described in example 1, except that instead of those indicated in example 1
    0 of the reaction components the substances listed in Table 1 are used.
    T a 5 l and c a 1
    N, N-Dimethylol-. urea 7.2
     2, k, 8
    18 22, i
    3 7
    23.1
    3
    6
    1020005
    Continued table. one
    权利要求:
    Claims (3)
    [1]
    (57) 1. METHOD FOR PRODUCING A CATIONIC ADSORBENT by reacting the product of the condensation of formaldehyde with urea or melamine with a compound containing amide groups, with the aim that, in order to obtain adsorbents with high absorption capacity for with respect to dyes, as a 'product of the condensation of formaldehyde with urea or melamine, a product that does not contain primary amino groups is used, and as a compound containing amide groups, a compound of the general formula
    - Q — N - - Q - sst-t;
    where ftp, R 2 and ^ 3 “θ ° Α ° Ρ ° Α, ethyl or Q ^ -CONH ^, R ^ and R ^ together with the nitrogen atom attached to them form a piperidine ring or R ^ * and R ^ together with the group > NQN c, form a piperazine ring;
    Q is —CH ^ —CHfc— or —CH g —CH < CH 2 ~, Q ^ - —CH 2 - or —CH g —CH 4 , X is hydrogen or —CH ^ OH;
    m is 0 or 1.
    [2]
    2. The method of pop. ^ characterized in that as a non-primary amino group-containing condensation product of formaldehyde with urea or melamine, N, '-dimethylurea, N, Ν', νtrimethylolmelamine or N, N *, Ν , Γ-Γ βametamelolmelamine are used.
    [3]
    3. The method according to π. 1, wherein the interaction is carried out in the presence of sulfamic acid as a catalyst.
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    同族专利:
    公开号 | 公开日
    ES492917A0|1981-05-16|
    EP0027158A2|1981-04-22|
    ES8104818A1|1981-05-16|
    FI67087B|1984-09-28|
    DK280080A|1980-12-29|
    FI802039A|1980-12-29|
    EP0027158B1|1984-07-25|
    BR8004070A|1981-05-12|
    CA1143500A|1983-03-22|
    EP0027158A3|1981-08-05|
    DE3068675D1|1984-08-30|
    US4404104A|1983-09-13|
    FI67087C|1985-01-10|
    IL60411D0|1980-09-16|
    IL60411A|1983-11-30|
    US4316005A|1982-02-16|
    DE3023788A1|1981-01-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4110736A1|1991-04-03|1992-10-08|Rotta Innovations Gmbh Dr|Heat degradable polymer particles used in water treatment - comprising amino resin matrix with immobilised functional polymer|FR782195A|1933-12-04|1935-05-31|Manufacturing process of artificial resins|
    US2367455A|1941-04-09|1945-01-16|Rohm & Haas|Aminocyanoacetamide resins|
    FR927696A|1945-04-25|1947-11-05|Ici Ltd|Compounds containing fatty radicals|
    CA553155A|1951-08-31|1958-02-11|Ciba Limited|Salts of new hardenable, basic, ternary condensation products derived from methylol compounds of aminotriazines or of urea|
    US3189646A|1962-04-26|1965-06-15|Coastal Interchemical Company|Process for the preparation of n-methylol amide derivatives|
    US4178438A|1975-11-14|1979-12-11|Ciba-Geigy Aktiengesellschaft|Cationically modified, cellulose-containing materials|
    DE2650967A1|1975-11-21|1977-06-02|Ciba Geigy Ag|METHOD OF COLORING TEXTILE MATERIAL|US4407976A|1980-06-16|1983-10-04|Ciba-Geigy Corporation|Anionic adsorbent|
    US4424284A|1980-10-28|1984-01-03|Ciga-Geigy Corporation|Cationic adsorption agent|
    CH667360A|1984-07-21|1988-10-14|
    US5632781A|1994-09-30|1997-05-27|Nicca U.S.A., Inc.|Cationic polycondensate dye fixing agent and process of preparing the same|
    US7067613B2|2004-06-04|2006-06-27|Chemical Products Corporation|Separation of polyolefins from nylons|
    US20060069170A1|2004-09-27|2006-03-30|Chemical Products Corporation|Decomposition of Polyester|
    US20060070188A1|2004-09-27|2006-04-06|Chemical Products Corporation|Colorant Removal from Polymeric Fibers|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH603679|1979-06-28|
    CH86980|1980-02-04|
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