Unsaturated polyester resin composition

Details Unsaturated polyester resin composition Unsaturated polyester resin composition

1981-03-19

1982-06-08

Welsh, Maurice J.

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

525 36, 525 40, 528304, C08G 6354

Patent

active

043340350

ABSTRACT:
An unsaturated polyester resin composition comprising (A) an unsaturated polyester alkyd prepared by condensing all or at least 30 mol% of 1,2-butanediol as a polyhydric alcohol component, all or part of phthalic anhydride as a saturated polybasic acid component, and an unsaturated polybasic acid component, and (B) an unsaturated monomer copolymerizable with component (A), the amount of component (B) being 20 to 55 parts by weight based on 100 parts by weight of component (A) is disclosed. The thus-formed unsaturated polyester resin composition is of low viscosity and is easy in filling with glass fibers, pigments, inorganic fillers, etc. Further, it has such advantages that the smell of the unsaturated monomer is low and that the influence against human beings due to evaporation of the unsaturated monomer can be reduced.

REFERENCES:
patent: 3026286 (1962-03-01), Parker
patent: 3933875 (1976-01-01), Brose et al.
patent: 4290938 (1981-09-01), Miyake et al.

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