Poly(silyleneethynylene phenyleneethynylenes), method for prepar

Details Poly(silyleneethynylene phenyleneethynylenes), method for prepar Poly(silyleneethynylene phenyleneethynylenes), method for prepar

1994-03-23

1995-05-30

Marquis, Melvyn I.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528 25, 528 31, 528 32, 528 43, 528483, C08G 7760

Patent

active

054202388

ABSTRACT:
A method for preparing a highly heat-resistant and burning-resistant poly(silyleneethynylene phenyleneethynylene) having a repeated unit represented by the following structural formula (1A): ##STR1## wherein the phenylene group may be in the o-, m- or p-form, R represents a halogen atom or an alkyl group, alkoxy group, phenoxy group, alkenyl group, alkynyl group, aromatic group, disubstituted amino group or silanyl group; n is an integer ranging from 0 to 4; and R' represents a hydrogen atom, an alkyl group, alkenyl group, alkynyl group or aromatic group, a product obtained by the method and a hardened product obtained by heat-treating, at a temperature ranging from 50.degree.to 700.degree. C., the poly(silyleneethynylene phenyleneethynylene).

REFERENCES:
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The Canadian Journal of Chemistry, vol. 68, pp. 1100-1105 (1989).
Proceedings of the Third Symposium on Organosilicon Material Chemistry, Oct. 29, 1992.

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