Polyester/naphthalenedicarboxylic acid-containing polymer blends displaying reduced fluorescence

Abstract

The present invention relates to blends of a polyester, polyamide or polyester/amide containing a copolymerizable fluorescence quenching compound and a second polymer. The blends of the present invention display reduced fluorescence. Specifically the blends comprise (a) a polyester/amide comprising: (1) a dicarboxylic acid component which comprises at least 0.1 mol % of a dicarboxylic acid selected from the group consisting of terephthalic acid and/or terephthalate ester; (2) a diol and/or diamine component; (3) 0.1 to 99.9 mol %, based on 100 mol % dicarboxylic acid and 100 mol % diol, of a copolymerizable fluorescence quenching compound; (b) a second polymer selected from the group poly(alkylene terephthalate) homo and copolyesters, poly(alkylene naphthalate) homo and copolyesters, poly(cycloalkylene terephthalate) homo and copolyesters, poly(alkylene 1,4-cyclohexanedicarboxylate) homo and copolyesters, and polycarbonate homo and copolymers.

Dependencies are inferred from the claim text.