Novel organopolysiloxanes derived from bis-silyl substituted het

Details Novel organopolysiloxanes derived from bis-silyl substituted het Novel organopolysiloxanes derived from bis-silyl substituted het

1988-01-04

1989-02-28

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 33, 548406, 549 4, 549 83, C08G 7122

Patent

active

048086878

ABSTRACT:
The organopolysiloxanes of this invention comprise repeating units consisting essentially of a five-membered ethylenically unsaturated heterocyclic ring containing a diorganosiloxane group bonded to the two cyclic carbon atoms adjacent to the hetero atom, which can be nitrogen, oxygen or sulfur. This invention encompasses homopolymers of said repeating units and copolymers comprising said units and diorganosiloxane units such as dimethylsiloxane. The present polymers are characterized by their high resistance to thermally induced degradation, and do not exhibit a significant weight loss at temperatures up to 300 degrees C.

REFERENCES:
patent: 2640833 (1953-06-01), DiGiorgia
patent: 2645644 (1953-07-01), DiGiorgio
patent: 2803633 (1957-08-01), Sommer
patent: 2845435 (1958-07-01), Frisch et al.
patent: 3068241 (1962-12-01), Sargent
Article, (Dokl. Akad. Nauk SSSR, vol. 216, No. 5, pp. 1062-1065, V. A. Kuznetsov et al., (No Date Available).
Article, Organosilicon Compounds Having Phenylene and Thienylene Chains, T. I. Tschernyschewa et al., Plaste und Kaut. (1963), 10(7) 390.

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