Flame retardant organopolysiloxane-polycarbonate triblock copoly

Details Flame retardant organopolysiloxane-polycarbonate triblock copoly Flame retardant organopolysiloxane-polycarbonate triblock copoly

1990-08-27

1991-06-18

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 26, 528 27, 528 29, 528 31, 528 32, 528 34, 556462, 556453, 556456, 556461, C08G 7706

Patent

active

050250744

ABSTRACT:
Phenol-organopolysiloxane chainstoppers are phosgenated in combination with a bisphenol to make flame retardant organopolysiloxane-polycarbonate triblock copolymers. The phenol-organopolysiloxane chainstoppers can be made by effecting addition between an aliphatically unsaturated phenol and a silicon-hydride organopolysiloxane.

REFERENCES:
patent: 4695597 (1987-09-01), Seino
patent: 4895919 (1990-01-01), Faler et al.

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