Powder coating compositions with hydroxy containing acrylic copo

Details Powder coating compositions with hydroxy containing acrylic copo Powder coating compositions with hydroxy containing acrylic copo

1977-05-10

1978-04-18

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260875, 260885, 260901, 526 56, 526320, C08F26504, C08G 6312

Patent

active

040852601

ABSTRACT:
Powder coating compositions are disclosed which, exclusive of pigments and other nonreactant components comprise a coreactive mixture of: (A) a copolymer of between about 5 and about 20 weight percent of a hydroxy bearing monomer and between about 95 and about 80 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature in the range of about 40.degree. C to about 90.degree. C and a number average molecular weight (M.sub.n) of between about 2000 and about 10,000; and an organic di- or poly-carboxylic acid or di- or poly-carboxylic acid anhydride crosslinking agent, said crosslinking agent being present in an amount of from about 0.8 to about 1.1 crosslinkable functional groups for each hydroxy group in the copolymer.

REFERENCES:
patent: 3741272 (1973-06-01), Ullrich et al.
patent: 3787521 (1974-01-01), Labana et al.
patent: 3876587 (1975-04-01), Matsui et al.

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