Powder coating composition based on mixed bisphenol epoxy resins

Details Powder coating composition based on mixed bisphenol epoxy resins Powder coating composition based on mixed bisphenol epoxy resins

1989-10-05

1991-08-27

Nielsen, Earl

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525113, 525934, 523427, 523428, 523429, 523434, C08L 6302, C08L 6702

Patent

active

050434012

ABSTRACT:
A powder coating composition suitable for slot insulation is disclosed which includes an epoxy resin containing at least 60% by weight of a mixture of a first glycidyl ether of bisphenol A having a number average molecular weight of 2500-8000 with a second glycidyl ether of bisphenol A having a number average molecular weight of 350-1700, the mixture having a number average molecular weight of 1600-4600, a carboxyl group-terminated polyester resin in an amount of 5-100 parts by weight per 100 parts by weight of the epoxy resin, a curing agent, and an inorganic filler in an amount of 10-80% by weight.

REFERENCES:
patent: 3647726 (1972-03-01), Ulmer
patent: 4223097 (1980-09-01), Johannes et al.

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