Polyester molding compositions

Details Polyester molding compositions Polyester molding compositions

1991-04-15

1993-11-02

Stoll, Robert L.

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

Synthetic resins

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

C08G 6348

Patent

active

H00012556

ABSTRACT:
Polyester molding compositions which contain an unsaturated polyester and an additional monomer for curing the polyester are improved by addition of a block copolymer which is modified with an unsaturated polyester. The block copolymer is an unsaturated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diene. The block copolymer is preferably produced by polymerizing styrene-butadiene diblock copolymer arms and coupling the arms with a difunctional coupling agent.

REFERENCES:
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patent: 3925299 (1975-12-01), Phillips
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patent: 4080348 (1978-03-01), Korpman
patent: 4096203 (1978-06-01), St. Clair
patent: 4329438 (1982-05-01), Yamori et al.
patent: 4670485 (1987-06-01), Hesse
patent: 4775718 (1988-10-01), Broekhuis
patent: 4851474 (1989-07-01), Willis
S. N. Tong & P. Wu, "Supertough Unsaturated Polyester and Its SMC", 42nd Annual Conf., Composites Institute, Feb. 1987, pp. 2-6.
J. Korb, "ETP: Elastomer-Toughened Polyesters", 39th Annual Conf., Soc. of the Plastics Industry, Jan. 16-19, 1984, pp. 1-9.

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