Patent ID: 11920049
Assignee: ALLNEX USA INC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A powder coating composition for curing at low temperature between 100° C. and 150° C. which comprises:
a. a carboxylic acid functional resin A which is a polyester resin A having carboxylic acid groups,
b. a first glycidyl functional resin B1 which is a bisphenol A based epoxy resin having glycidyl groups,
c. a second glycidyl functional resin B2 which is a phenol or cresol epoxy novolac resin having glycidyl groups, and
d. at least one thermosetting curing catalyst C,
wherein the ratio between equivalents of bisphenol A epoxy resin (number of moles of epoxy groups in B1 resin) and equivalents of phenol or cresol epoxy novolac resin (number of moles of epoxy groups in B2) is between 70/30 to 55/45.