Blends of polyphenylene ether resin, a polyetherimide siloxane c

Details Blends of polyphenylene ether resin, a polyetherimide siloxane c Blends of polyphenylene ether resin, a polyetherimide siloxane c

1990-12-19

1992-03-10

Hoke, Veronica P.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525397, C08K 510

Patent

active

050950606

ABSTRACT:
Blend compositions comprise a polyphenylene ether resin, a polyetherimide siloxane copolymer and pentaerythritol tetrabenzoate. The polyetherimide siloxane copolymer is preferably included in an amount sufficient to provide the compositions with improved flame retardant properties while the pentaerythritol tetrabenzoate is preferably included in an amount sufficient to lower the melt viscosity of the blend compositions. The compositions may further include an impact-modifying rubber compound, preferably a block copolymer of a vinyl aromatic hydrocarbon and an alkene or post-hydrogenated diene hydrocarbon.

REFERENCES:
patent: 3186961 (1965-06-01), Sears
patent: 4348497 (1982-09-01), Berghman
patent: 4431779 (1984-03-01), White et al.
patent: 4690997 (1987-11-01), Cella et al.
patent: 4808686 (1989-06-01), Cella et al.
patent: 4873287 (1989-05-01), Holub et al.

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