Patent ID: 7687594
Filing Date: 2010-03-30
Classification: C08G,C08J,Y10T

Abstract:
1. A random amorphous copolyester, comprising a copolyester polymerized by esterifying and polycondensing a mixture of a diacid monomer and a diol monomer and represented by formula (I): wherein each of R1 and R2, independently, is a bivalent aromatic or aliphatic group, wherein A, B, C, D, E and F are numbers of repeating units, A is 0-0.8, B is 0-0.8, C is 0-1, D is 0-1, E is 0-0.8, F is 0-0.8, C+D>0.2 and A+B+E+F<0.8, wherein the diacid monomer comprises terephthalic acid (TPA) and an aromatic or aliphatic diacid monomer, and the diol monomer comprises ethylene glycol (EG), 1,3 and/or 1,4-cyclohexanedimethanol (1,3 and 1,4-CHDM), and an aromatic or aliphatic diol monomer, and wherein 1,3 and 1,4-cyclohexanedimethanol (1,3 and 1,4-CHDM) is present in an amount of 20-100 mole %, based on 100 mole % of the diol monomer.