Organopolysiloxane-polycarbonate copolymers

Details Organopolysiloxane-polycarbonate copolymers Organopolysiloxane-polycarbonate copolymers

1978-02-02

1978-11-21

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

260 3, 260 13, 260824R, 260826, 528 10, 528 12, 528 21, 528 43, C08G 7704

Patent

active

041267400

ABSTRACT:
Polymeric compositions containing organosiloxane units and carbonate units modified by the presence of halogenated organic radicals imparting improved flame retardancy, reduced smoke evolution, and non-drip characteristics are described. Such compositions can be heat-treated alone or in the presence of curing agents to form thermoset products.

REFERENCES:
patent: 3821325 (1974-06-01), Merritt, Jr. et al.
patent: 3832419 (1974-08-01), Merritt, Jr.

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