Patent ID: 6808805
Filing Date: 2004-10-26
Classification: C08G,C08L,Y10T

Abstract:
A profile made by profile extrusion comprising a polyester composition having an inherent viscosity of at least 0.65 dl/g and comprising:(a) a diacid component comprising 100 to 98.0 mole percent of residues of a primary acid selected from the group consisting of terephthalic acid, naphthalenedicarboxylic acid, isophthalic acid and mixtures thereof; (b) a glycol component comprising 100 to 98.0 mole percent of residues of a primary glycol selected from the group consisting of ethylene glycol, 1,4-cyclohexanedimethanol, diethylene glycol, neopentyl glycol, and mixtures thereof; and (c) 0.05 to 2.0 mole percent of residues of a branching agent selected from the group consisting of an acidic branching agent comprising a tri-functional or greater monomer, an alcoholic branching agent comprising a tri-functional or greater monomer, and mixtures thereof; wherein the polyester composition is based on 100 mole percent of the diacid component and 100 mole percent of the glycol component and the acidic branching agent comprises a portion of the diacid component and the alcoholic branching agent comprises a portion of the glycol component.