Aromatic carbonate polymer composition

Details Aromatic carbonate polymer composition Aromatic carbonate polymer composition

1989-09-14

1991-06-25

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524158, 524435, 525474, 528 26, 528 29, 528 32, 528 33, C08F28302

Patent

active

050267914

ABSTRACT:
A composition comprising an aromatic carbonate polymer wherein in the backbone of said polymer there is a siloxane unit of the structure below ##STR1## wherein n is an integer of one to about 100, R and R' are each selected from the group consisting of alkyl of one to twelve carbon atoms, inclusive, cycloalkyl of four to eight carbon atoms, inclusive, aryl or six to twenty carbon atoms, inclusive, aryl substituted alkyl of seven to twenty two carbon atoms, inclusive, and A ##STR2## wherein p is an integer of zero to about 4, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, are the same or different and are selected from hydrogen, alkyl of one to six carbon atoms, inclusive, and with the proviso that there is sufficient A present that the flame retardance of the polymer is enhanced compared to the polymer without the said siloxane unit.

REFERENCES:
patent: 3189662 (1965-06-01), Vaughn, Jr.
patent: 3419635 (1968-12-01), Vaughn, Jr.
patent: 4387176 (1983-06-01), Freye

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