Patent ID: 6599994
Filing Date: 2003-07-29
Classification: B29C,C08J,C08L,Y10S,Y10T

Abstract:
A compositional blend of a polyester and a copolyester comprising:(A) from about 50 to about 99 weight percent a polyester comprising: (1) an acid residue moiety comprising from about 60 to 100 mole percent terephthalic acid and from 0 to about 40 mole percent of a second acid selected from the group consisting of isophthalic acid, adipic acid, azelaic acid, naphthalenedicarboxylic acid, succinic acid, cyclohexanedicarboxylic acid; and mixtures thereof; and (2) a diol residue moiety comprising from about: i. 0-20 mole percent diethylene glycol; ii. 10-35 mole percent 1,4-cyclohexanedimethanol; iii. 0-25 mole percent neopentyl glycol; iv. 0-30 mole percent propanediol; v. 0-30 mole percent 1,4-butanediol; and vi. remaining mole percent is ethylene glycol; and (B) from about 1 to about 50 weight percent of an essentially, linear, random copolyester or branched and/or chain extended copolyester thereof and having an inherent viscosity of about 0.2 to about 2.0 deciliters/gram as measured at a temperature of 25Â° C. for a 0.5 g sample in 100 ml of a 60/40 parts by weight solution of phenol/tetrachloroethane and having repeating units of: â€ƒwherein R1 is selected from one or more of the groups consisting of C2-C8 alkylene or oxylalkylene, and the mole percent of R1 is from about 80 to 100; R3 is selected from one or more of the groups consisting of C2-C8 alkylene or oxylalkylene; C2-C8 alkylene or oxylalkylene substituted with one to four substituents independently selected from the group consisting of halo, C6-C10 aryl, and C1-C4 alkoxy; C5-C12 cycloalkylene; C5-C12 cycloalkylene substituted with one to four substituents independently selected from the group consisting of halo, C6-C10 aryl, and C1-C4 alkoxy; and the mole percent of R3 is from 0 to about 20; R2 is selected from one or more of the groups consisting of C2-C12 alkylene or oxyalkylene; C2-C12 alkylene or oxylalkylene substituted with one to four substituents independently selected from the group consisting of halo, C6-C10 aryl, and C1-C4 alkoxy; C5-C10 cycloalkylene; C5-C10 cycloalkylene substituted with one to four substituents independently selected from the group consisting of halo, C6-C10 aryl, and C1-C4 alkoxy; and the mole percent of R2 is from about 35 to about 95; R4 is selected from one or more of the groups consisting of C6-C10 aryl; C6-C10 aryl substituted with one to four substituents independently selected from the group consisting of halo, C6-C10 aryl, and C1-C4 alkoxy; C5-C10 cycloalkylene; C5-C10 cycloalkylene substituted with one to four substituents independently selected from the group consisting of halo, C6-C10 aryl, and C1-C4 alkoxy; and the mole percent of R4 is from about 5 to about 65; wherein the weight percentages are based on the total weight of components (A) and (B); the mole percentages of component (A) are based on 100 mole percent of the acid residue moiety and 100 mole percent of the diol residue moiety; and for component (B) the sum of the mole percent for R1 and R3 is 100 and the sum of the mole percent for R2 and R4 is 100.