| 摘要 |
1479943 Powdered dispersible dye compositions BASF AG 26 Sept 1974 [27 Sept 1973] 41859/74 Heading D1B A stable, concentrated, dispersible dye powder composition contains:- (A) one or more water-insoluble dyes (B) one or more anionactive dispersing agents and (C) 2-30%, based on the dye, of a stabilising agent which one of C1-C4 below:- (Cl) a reaction product of 2-80 mols of ethylene oxide per mol of OH or amino group with (a) a C 6-@6 fatty alcohol or (b) a (C 4-12 alkyl) phenol or (c) a C 10-20 fatty amine or (d) castor oil and/or hydrogenated castor oil or (e) a C 14-30 fatty acid or (f) a natural resin acid; (C2) a reaction of a C 2-5 alkylenediamine with 25-120 mols of propylene and ethylene oxide/mol amino group at least 20 mols/mol of ethylene oxide being used; (C3) a polyethylene oxide of M.W. 200-1000: (C4) a mixture of two or more of C1-C3. The powder composition is prepared by adding component (C) to an equeous mixture of (A) and (B) either before, during, or after dispersion, followed by spray drying of the mixture. Dyes used include anthraquinone and polycyclic vat dyes, sulphur dyes, and anthraquinone and azo disperse dyes. Textile or fibrous materials are dyed using the above powder compositions.
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