Composition of polyphenylene ether resins and EPDM-polystyrenes

Details Composition of polyphenylene ether resins and EPDM-polystyrenes Composition of polyphenylene ether resins and EPDM-polystyrenes

1980-12-23

1982-12-21

Hamrock, William F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

525 68, C08K 554

Patent

active

043650384

ABSTRACT:
Novel compositions are provided which include a polyphenylene ether resin and EPDM-rubber polystyrene modified or polymerized with silicone oil which is free from unsaturated hydrocarbon groups. Included within the disclosure are methods of preparing and molding such compositions and the molded products obtained therefrom. The compositions provide molded products with substantially better room temperature properties, such as Izod impact and Gardner impact strengths, and surface appearance (gloss), than blends of polyphenylene ether with EPDM-polystyrene with no modifier or modified with an aliphatic mineral oil. Both Izod and Gardner impact strengths at low temperatures are also improved. Also included within the scope of the invention are reinforced and flame-retardant compositions of said polyphenylene ether resin and said EPDM-polystyrene polymerized with silicone oil.

REFERENCES:
patent: 3737479 (1973-06-01), Hoof
patent: 3960985 (1976-06-01), Cooper
patent: 4102850 (1978-07-01), Cooper et al.

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