Composition of polyphenylene ether resins and epdm-...

Details Composition of polyphenylene ether resins and epdm-... Composition of polyphenylene ether resins and epdm-...

C - Chemistry, Metallurgy

08

K

400/4113

C08K 5/54 (2006.01) C08L 51/00 (2006.01) C08L 51/06 (2006.01) C08L 71/12 (2006.01) C08L 83/00 (2006.01)

Patent

CA 1171584

8CN2730 COMPOSITION OF POLYPHENYLENE ETHER RESINS AND EPDM-POLYSTYRENES MODIFIED WITH SILICONE OIL ABSTRACT OF THE DISCLOSURE 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 substanti- ally better room temperature properties, such as Izod impact and Gardner impact strengths, and surface appear- ance (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 reinforc- ed and flame-retardant compositions of said polyphen- lene ether resin and said EPDM-polystyrene polymerized with silicone oil.

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