Polymer bound flame retardants

C - Chemistry – Metallurgy – 07 – D

Patent

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402/2, 400/5015,

C07D 209/48 (2006.01) C08F 8/00 (2006.01) C08F 8/30 (2006.01) C08G 73/10 (2006.01) C08K 5/36 (2006.01) C08L 101/02 (2006.01)

Patent

CA 1333718

Polymeric flame retardants comprise halogenated aromatic compounds having acylamino functional groups which are chemically bonded to cyclic imide-containing or imide-forminq polymers or copolymers. The polymeric flame retardants are prepared by the reaction of halogenated aromatics containing a reactive hydrazido group with some or all of the anhydride groups of an cyclic alpha, beta-unsaturated dicarboxylic acid anhydride polymer or copolymer to form pendant halogenated- aromatic-substituted imide or amic acid groups. In addition, polymeric flame retardants are used to render thermoplastic resins less flammable under conditions which promote combustion. Novel flame retardant hydrazides are disclosed.

614868

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