Patent ID: 6218450
Filing Date: 2001-04-17
Classification: C08K

Abstract:
A copolyester blend resistant to ultraviolet radiation comprising:a. a polyethylene terephthalate based copolyester having 1,4-cyclohexanedimethanol residues;b. an effective amount of an ultraviolet radiation absorber selected from the group consisting of benzoxazinones, dimeric benzotriazoles, triazines and mixtures thereof;c. from about 5 mol % to about 40 mol % of isophthalic acid residues in said copolyester; andd. from about 5 mol % to about 20 mol % of 4,4'-biphenyldicarboxylic acid residues present in said copolyester wherein said mole percents of said isophthalic acid residues and 4,4'-biphenyldicarboxylic acid residues are based on 100 mole percent of the dicarboxylic acid residues or equivalents thereof.