Patent ID: 8697804
Filing Date: 2014-04-15
Classification: C08L

Abstract:
1. A thermoplastic composition comprising a poly(trimethylene terephthalate) homopolymer or copolymer, a modifier, a toughener, and a nucleator wherein the poly(trimethylene terephthalate) is substantially free of an ether linkage in the molecule; the modifier is an ionomer of an ethylene acid copolymer; the ethylene acid copolymer comprises repeat units derived from ethylene and a comonomer; the comonomer is one or more C the toughener is an ethylene ester copolymer; the ethylene ester copolymer comprises, based on the weight of the toughener, (i) about 20 to about 95 weight % of copolymerized units of ethylene, (ii) 0 to about 25 weight % of copolymerized units of at least one ester of the formula CH R the composition has lower melt viscosity than a composition that does not contain the modifier and the toughener; and the nucleator is monosodium terephthalates, monosodium naphthalene dicarboxylates, monosodium isophthalates, a salt of a C