Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1996-03-14
1997-09-02
Sellers, Robert E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525165, C08L 3314
Patent
active
056632401
ABSTRACT:
A powder coating composition comprises (a) from 60-90 percent by weight of an epoxy functional copolymer having a Tg of from 25.degree.-70.degree. C. formed by polymerizing from 50-75 percent by weight of a glycidyl functional monomer and from 35-50 percent by weight of a monomer free of glycidyl functionality, and (b) from 10-40 percent by weight of a polycarboxylic acid crosslinking agent, wherein the ratio of epoxy:acid functionality is about 1:0.8 to 1.
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Kania Charles M.
Lippert Robert D.
O'Dwyer James B.
Simeone Robert L.
PPG Industries Inc.
Sellers Robert E.
Stachel Kenneth J.
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