Patent ID: 8377530

Claim:
A polyester polymer composition comprising: at least one polyethylene terephthalate polyester in an amount ranging from 94.0 weight percent to 99.5 weight percent and at least one additive in an amount ranging from 0.5 weight percent to 6.0 weight percent, each based on the total weight of the polyester composition, wherein the at least one additive is wherein AR is selected from the group consisting of phenylene (C 6 H 4 ) and naphthylene (C 10 H 6 ), R 1 is selected from the group consisting of hydrogen (H), methyl (CH 3 ), ethyl (CH 2 CH 3 ), phenyl (C 6 H 5 ), and benzyl (CH 2 C 6 H 5 ), R 2 is selected from the group consisting of methyl (CH 3 ), ethyl (CH 2 CH 3 ), phenyl (C 6 H 5 ), and benzyl (CH 2 C 6 H 5 ), and wherein when AR is phenylene (C 6 H 4 ), the substituents, R 1 or R 2 , are located in the meta or para position relative to each other and when AR is naphthylene (C 10 H 6 ), the substituents, R 1 or R 2 , are located in the 1,3; 1,4; 1,5; 1,6; 1,7; 2,6; or 2,7 position relative to each other.