Compositions of polyphenylene ether, aromatic phosphate, aromati

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524132, 524139, 524141, 524462, 524464, 525 68, 525 92, 525905, C08K 503, C08K 551, C08K 552, C08L 7112

Patent

active

049468820

ABSTRACT:
Compositions comprising a polyphenylene ether and, optionally, a styrene resin, an aromatic phosphate, phosphonate or phospine oxide, an aromatic halogen compound and an impact modifier comprising a diene polymer have excellent flame retardant properties during large scale flammability tests. The compositions will tolerate large amounts of aromatic halogen compound without discoloration and processing difficulties. In comparison with compositions of the present state of the art, peak burn temperatures are reduced, smoke is less dense, and flaming drips are eliminated in large as well as small scale burn tests.

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Kennedy, et al., "Polymer Chemistry of Synthetic Elastomers", Interscience Publishers, vol. 23, Part II, pp. 553-559 (1969).

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