Patent ID: 8680167

Claim:
A composition comprising: (a) from 5 to 99 wt. % of a modified polybutylene terephthalate random copolymer that (1) is derived from polyethylene terephthalate copolymers comprising a mixture of ethylene glycol groups, diethylene glycol groups, terephthalic acid groups, and isophthalic acid groups, and 1,4-butanediol, and (2) comprises a mixture of 1,4-butanediol groups, ethylene glycol groups, diethylene glycol groups, terephthalic acid groups, and isophthalic acid groups, and (b) a filler component; wherein the ethylene glycol groups and diethylene glycol groups are each present in an amount ranging from 0.1 to 10 mole %, based on 100 mole % of glycol in the modified polybutylene terephthalate random copolymer; wherein the isophthalic acid groups are present in an amount ranging from 0.1 to 10 mole %, based on 100 mole % of diacid in the modified polybutylene terephthalate random copolymer; wherein the modified polybutylene terephthalate random copolymer has a total monomer content of the ethylene glycol groups, the diethylene glycol groups, and the isophthalic acid groups ranging from 3 and less than or equal to 17 equivalents, relative to the total of 100equivalents of diol groups and 100 equivalents of diacid groups in the modified polybutylene terephthalate random copolymer; and a melting temperature T m that is at least 200° C.; wherein the modified polybutylene terephthalate random copolymer, the filler component, and optionally at least one additive, are present in a total combined amount of 100 wt. %; and wherein the composition has a melt flow rate that is higher as compared to a composition that contains polybutylene terephthalate homopolymer consisting of 1,4-butanediol groups and terephthalic acid groups.