Powder paint with epoxy and hydroxy copolymer and mixture of dic

Details Powder paint with epoxy and hydroxy copolymer and mixture of dic Powder paint with epoxy and hydroxy copolymer and mixture of dic

1976-04-07

1982-11-09

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525386, 525934, 524904, C08F 846

Patent

active

RE0310778

ABSTRACT:
Improved powder paint compositions are disclosed which comprise a particulate mixture of (1) a qualitatively difunctional copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid, about 2 to about 10 weight percent of C.sub.5 -C.sub.7 hydroxyalkyl acrylates and/or C.sub.5 -C.sub.7 hydroxyalkyl methacrylates, and about 70 to about 93 weight percent monoethylenically unsaturated monomers consisting essentially of monofunctional monomers selected from the group consisting of esters of a C.sub.1 -C.sub.8 monohydric alcohol and acrylic acid, esters of a C.sub.1 -C.sub.8 monohydric alcohol and methacrylic acid and C.sub.8 -C.sub.12 monovinyl hydrocarbons, (2) a C.sub.4 -C.sub.20 saturated, straight chain, aliphatic dicarboxylic acid which is present in an amount that provides about 0.1 to about 0.6 carboxyl group per functional group on said copolymer, and (3) a polyanhydride, i.e., a homopolymer of a monomeric anhydride of a dicarboxylic acid, having molecular weight in the range of about 1000 to about 5000 which is present in an amount that provides about 0.2 to about 1.1 anhydride groups per [ epoxy] functional group on said copolymer.

REFERENCES:
patent: 3752870 (1973-08-01), Labana
patent: 3770848 (1973-11-01), Labana et al.
patent: 3781379 (1973-12-01), Theodore et al.
patent: 3876587 (1975-04-01), Matsui et al.

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