Flame retardant polycarbonates

Details Flame retardant polycarbonates Flame retardant polycarbonates

C - Chemistry, Metallurgy

08

L

400/7501

C08L 69/00 (2006.01) C08G 64/04 (2006.01) C08K 5/42 (2006.01)

Patent

CA 1262985

FLAME RETARDANT POLYCARBONATES ABSTRACT OF THE DISCLOSURE A Polycarbonate composition is disclosed which has improved flame retardant characteristics without the corresponding loss of the physical properties that results in color or corrosion problems. The composition includes a beta-alkenyl substituted aromatic polycarbonate resin where the beta-alkenyl substituent, such as 3,3'-dially-4,4'-dihydroxy- diphenyl-2,2'-propane, is present in an amount sufficient to improve the flame retardant properties of the polycarbonate. The substituted polycarbonate resin is then admixed with a flame retardant additive such as a metal salt of an aromatic sulfonate.

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