Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1995-01-23
1996-06-04
Yoon, Tae
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 80, 524358, 524401, 524516, 524264, C08K 534, C08K 300, C08L 3906
Patent
active
055233406
ABSTRACT:
An anionic electrodepositable coating composition for making pigment dispersed color filters comprising: (a) a pigment; (b) a first addition copolymer containing pyrrolidone and hydroxy groups; (c) a second addition copolymer containing carboxyl and hydroxy groups; and (d) a low molecular weight amine. The pyrrolidone-containing monomer can be N-vinyl-2-pyrrolidone or a pyrrolidone-containing acrylate-based monomer represented by the following formula: ##STR1## wherein R is hydrogen atom, or methyl or ethyl group, and n is an integer between 1.about.3. The first addition copolymer has a weight average molecular weight between 1,000 and 20,000 and is prepared from a monomer composition comprising about 0.5.about.90 mole percent of a pyrrolidone-containing unsaturated monomer and about 1.about.50 mole percent of a hydroxy-containing unsaturated monomer. The second addition copolymer has a weight average molecular weight between 5,000 and 60,000 and is prepared from a monomer composition comprising about 5.about.30 mole percent of a carboxyl-containing unsaturated monomer and 1.about.50 mole percent of a hydroxy-containing unsaturated monomer. The pigments in the coating composition were measured to have a weight average secondary particle size of less than 0.25 .mu.m, and a polydispersity of less than 1.05.
REFERENCES:
patent: 4388435 (1983-06-01), Loch
patent: 4429066 (1984-01-01), Gilmer
patent: 4551512 (1985-11-01), Struab et al.
Hsieh Pao J.
Lin Hsien K.
Lin Wen R.
Niu Chao-Wen
Shieh Jim-Chyuan
Industrial Technology Research Institute
Liauh W. Wayne
Nan Ya Plastics Corp.
Yoon Tae
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