Powder coating comprising novel curable polyester composition

Details Powder coating comprising novel curable polyester composition Powder coating comprising novel curable polyester composition

1995-10-25

1998-02-17

Dean, Ralph H.

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

525446, C08L 8305

Patent

active

057192308

ABSTRACT:
The present invention provides a powder coating having an excellent curability which can be baked without evaporation of a blocking agent as compared with the conventional powder coating to provide a coat having an excellent yellowing resistance an improved smoothness and weather resistance. A novel powder coating containing, as a main component, a polyester resin composition is provided, comprising (A) an alkenyl group-containing polyester resin with a number-average molecular weight of from 500 to 100,000 having at least 1.2 alkenyl groups on the average per molecule, (B) a Si--H group-containing curing agent having at least two Si--H groups per molecule, and (C) a catalyst active in hydrosilylation.

REFERENCES:
patent: 5321082 (1994-06-01), Ohsugi et al.
patent: 5409995 (1995-04-01), Iwahara et al.
patent: 5416147 (1995-05-01), Tankarada et al.
patent: 5580925 (1996-12-01), Iwahara et al.
Powder Coating:Why-How-When, Journal of Paint Technology, vol. 44, No. 565, Feb. 1972, pp. 30-37.

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