Composition for coating a substrate with an epoxy resin powder c

Details Composition for coating a substrate with an epoxy resin powder c Composition for coating a substrate with an epoxy resin powder c

1984-08-10

1985-07-09

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...

525934, 527601, 528112, 528113, 528365, C08G 5942

Patent

active

045281270

ABSTRACT:
This invention is directed to a composition for coating a substrate with a powder coating and to a method of making matt finishes. The composition comprises a solid polyepoxide resin, a solid curing agent in which at least 50 weight percent of the curing agent is a 1:1 mole ratio adduct of rosin and maleic anhydride, a catalyst for promoting the reaction between the polyepoxide and the curing agent, and a pigment. The method of making matt finishes comprises (1) applying to a surface the above-described composition and (2) curing the mixture at a temperature from 140.degree. to 250.degree. C.

REFERENCES:
patent: 2947711 (1960-08-01), Cooke et al.
patent: 3582509 (1971-06-01), Staniak et al.
patent: 3812064 (1974-05-01), Nichols
patent: 3842035 (1974-10-01), Klaren
Kuczynskaya et al., "Effect of Crosslinking Agents on the Properties of Powdered Epoxy Paints", International Polymer Science and Technology, 7, T93-T96 (1980).

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