FLAME RETARDANT POLYALKYLENE TEREPHTHALATE COMPOSITION

摘要

Disclosed herein are flame retardant polyalkylene terephthalate compositions that employ reduced amounts of organo-halide as flame retardants (FR), wherein the composition comprises: (a) a polyalkylene terephthalate; (b) an organo-bromo flame retardant (FR) agent; (c) an antimony synergist; (d) an organo phosphate ester phosphorous flame retardant compound; (e) talc; and (f) sodium or potassium carbonate. In addition to being characterized by the presence of a phosphorous containing flame retardant compound and sodium or potassium carbonate, the compositions of the present inventions contain reduced amounts of organo-bromo FR agent and/or antimony FR synergist and have excellent flame retardant properties.

主权项

1. A polyalkylene terephthalate flame retardant composition that comprises:
(a) about 20 to about 70 parts by weight of a polyalkylene terephthalate or a mixture of polyalkylene terephthalates; (b) about 5 to about 15 parts by weight of a organo-bromo flame retardant (FR) agent; (c) about 0.1 to about 5 parts by weight of an antimony synergist; and (d) about 0.5 to about 3 parts by weight of bisphenol A diphenyl phosphate; (e) 0.5 to 5 parts by weight of a nucleating agent which is talc; (f) 0.01 to 2 parts by weight of sodium or potassium carbonate; (g) 0 to 60 parts by weight of a reinforcing agent; and (h) 0 to 70 parts by weight of a polycarbonate; wherein the flame retardant composition has a UL-94 rating of V-0.