Powder paint with epoxy and amide copolymer with anhydrides and

Details Powder paint with epoxy and amide copolymer with anhydrides and Powder paint with epoxy and amide copolymer with anhydrides and

1975-02-24

1976-11-09

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

526 16, 526 56, C08L 6300

Patent

active

039911322

ABSTRACT:
Improved powder coating compositions are disclosed which comprise a particulate mixture of (1) a qualitative difunctional copolymer of about 5 to 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid, about 2 to about 10 weight percent of a monomeric alpha-beta olefinically unsaturated amide and about 70 to about 93 weight percent of other monoethylenically unsaturated monomers consisting essentially of monofuctional, 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) an anhydride crosslinking agent selected from the group consisting of (a) monomeric anhydrides of dicarboxylic acids and (b) homopolymers of monomeric anhydrides of dicarboxylic acids and present in an amount that provides about 0.3 to about 1.2 anhydride groups for each functional group on said copolymer, and (3) a hydroxy carboxylic acid having a melting point in the range of about 40.degree. to about 150.degree. C. and present in an amount such as to provide about 0.1 about 0.4 carboxyl groups per functional group on said copolymer.

REFERENCES:
patent: 2703765 (1955-03-01), Osdal
patent: 3404018 (1968-10-01), Hicks
patent: 3541055 (1970-11-01), Malamet
patent: 3758632 (1973-09-01), Labana
patent: 3770848 (1973-11-01), Labana
patent: 3781379 (1973-12-01), Theodore

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