Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1993-04-22
1994-09-20
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524555, 524556, 524560, C08K 524
Patent
active
053489977
ABSTRACT:
A crosslinking aqueous pigment dispersion is disclosed, comprising (A) an aqueous resin dispersion, (B) a pigment, (C) a carbonyl-containing copolymer resin having an aldo group or a keto group, and (D) a hydrazine derivative having at least two hydrazino groups (--NHNH.sub.2) per molecule, in which said carbonyl-containing copolymer resin (C) is a copolymer resin obtained by copolymerizing a monomer mixture consisting of (a) from 1 to 30% by weight of a carbonyl-containing unsaturated monomer having an aldo group or a keto group, (b) from 10 to 65% by weight of an ethylenically unsaturated carboxylic acid monomer, (c) from 5 to 89% by weight of at least one unsaturated monomer selected from the group consisting of an alkyl acrylate or alkyl methacrylate having from 1 to 10 carbon atoms in the alkyl moiety thereof, an aromatic vinyl monomer, acrylonitrile, methacrylonitrile, vinyl acetate, vinyl propionate, a vinyl halide, a vinylidene halide, butadiene, and ethylene, and (d) not more than 50% by weight of an unsaturated monomer other than the unsaturated monomers (a) to (c), and said carbonyl-containing copolymer resin (C) is present in an amount of from 0.1 to 10% by weight based on said pigment (B) and has been solubilized to a degree of at least 90% by weight by addition of an alkali and/or an organic solvent. The pigment dispersion provides a dry film excellent in gloss, water resistance, alkali resistance and weather resistance.
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Aoki Masahiro
Hayashi Ryutaro
Kato Yoshinori
Tsukamoto Takeo
Mitsubishi Yuka Badische Co., Ltd.
Schofer Joseph L.
Smith Jeffrey T.
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