Flame-retardant polyphenylene ether resin composition

Details Flame-retardant polyphenylene ether resin composition Flame-retardant polyphenylene ether resin composition

C - Chemistry, Metallurgy

08

K

400/1133, 400/30

C08K 5/53 (2006.01) C08L 21/00 (2006.01) C08L 51/00 (2006.01) C08L 71/04 (1980.01)

Patent

CA 1089579

FLAME-RETARDANT POLYPHENYLENE ETHER RESIN COMPOSITION ABSTRACT OF THE DISCLOSURE A flame-retardant polyphenylene ether resin composition comprising (I) 85 to 97% by weight of a resin consisting of (1) 20 to 90% by weight of a polyphenylene ether of the formula (A): Image (A), where R1 and R2 are each alkyl of 1 to 4 carbon atoms and m is the degree of polymerization, and (2) 80 to 10% by weight of a styrene type polymer and (II) 3 to 15% by weight of at least one member of the group consisting of phosphorus-containing compounds of formula (B): Image (B) . where X is a hydrogen atom, a hydroxyl group, an amino group, a halogen atom, an alkyl group of 1 to 10 carbon atoms, an alkoxy group of 1 to 10 carbon atoms, an alkyl- thio of 1 to 10 carbon atoms, an aryloxy of 6 of 10 carbon atoms or hydroxy substituted aryloxy of 6 to 10 carbon atoms, Y1 and Y2 are each an alkyl of 1 to 8 carbon atoms, an alkoxy of 1 to 8 carbon atoms or an aryl group, Z is an oxygen or - 1 - sulfur atom, n and p are each an integer of 0 to 4 and q is an integer of 0 or 1. Similar compositions are also prepared including styrene type compounded grafted to the polyphenylene ether and including organic phosphates and organic phosphites and/or melamine, benzoquanamine or their methylol or etherified methylol derivatives. The polyphenylene ether resin compositions of this invention have improved fabricability and flame-retardancy and are useful in making films, sheets and fibers.

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