Thermosetting glycidyl modified acrylic powder coatings

Details Thermosetting glycidyl modified acrylic powder coatings Thermosetting glycidyl modified acrylic powder coatings

1992-09-04

1993-12-14

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

524904, C08L 6300

Patent

active

052704165

ABSTRACT:
Thermosetting powder coating compositions are produced based on a low molecular weight glycidyl functional copolymer produced by solvent polymerization of ethylenic monomers in an organic solvent polymerization medium containing at least 15% by weight organic solvent based on the weight of solvent and monomers copolymerized, where the ethylenic monomers copolymerized comprise on a weight basis between about 15% and 35% glycidyl methacrylate, between about 5% and 60% methyl methacrylate, between about 2% and 15% butyl methacrylate, and between about 5% and 50% styrene, to produce glycidyl functional copolymer having a melt viscosity between 150 and 400 poise and a Tg between 80.degree. C. and 100.degree. C., where the copolymer is coreactive with carboxyl functional crosslinking compounds.

REFERENCES:
patent: 4089910 (1978-05-01), Shibata et al.
patent: 4246368 (1981-01-01), Murase
patent: 4256805 (1981-03-01), Tugukuni et al.

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