Powder paint with epoxy and hydroxy copolymer and dicarboxylic a

Details Powder paint with epoxy and hydroxy copolymer and dicarboxylic a Powder paint with epoxy and hydroxy copolymer and dicarboxylic a

1975-02-24

1982-11-16

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...

524904, 525208, 5253273, C08F 846

Patent

active

043595545

ABSTRACT:
Improved powder coating 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 a C.sub.5 -C.sub.7 hydroxyalkyl acrylates and 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, and (2) a crosslinking agent consisting of C.sub.4 -C.sub.20 saturated, straight chain, aliphatic, dicarboxylic acid, said crosslinking agent being present in an amount sufficient to provide about 0.8 to about 1.1 carboxyl groups per functional group (epoxy and hydroxy groups) on said copolymer.

REFERENCES:
patent: 3541055 (1970-11-01), Malamet
patent: 3730930 (1973-05-01), Labana
patent: 3752870 (1973-08-01), Labana
patent: 3787521 (1974-01-01), Labana et al.
patent: 3876587 (1975-04-01), Matsui et al.

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