C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/12, 400/7215
C08G 64/00 (2006.01) C08G 64/18 (2006.01) C08G 77/00 (2006.01) C08G 77/448 (2006.01) C08L 69/00 (2006.01) C08L 83/00 (2006.01) C08L 83/04 (2006.01)
Patent
CA 2021103
8CL-6756 VINYL LR. POLYMETHYLVINYLSILOXANE/ POLYCARBONATE COPOLYMERS ABSTRACT OF THE DISCLOSURE A composition comprising an aromatic carbonate polymer wherein in the backbone of said polymer there is a siloxane unit of the structure below Image 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 of six to twenty carbon atoms, inclusive, aryl substituted alkyl of seven to twenty two carbon atoms, inclusive, and A Image wherein p is an integer of zero to about 4, R1, R2, R3, R4 and R5, 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.
Gallucci Robert R.
Hawkins Christopher M.
Razzano John S.
Company General Electric
Craig Wilson And Company
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