Patent ID: 7288618
Filing Date: 2007-10-30
Classification: C08G,C08L,Y10T

Abstract:
1. A thermoplastic biodegradable aliphatic polyester of the diacid/diol type a) at least one aliphatic dicarboxylic acid, or esters thereof, with C b) at least one aliphatic or cycloaliphatic diol, with 2-20 C atoms; c) at least one at least trifunctional molecule wherein c), based on the sum of the moles of the aliphatic dicarboxylic acid and of said at least trifunctional molecule, is comprised in the range from 0.05% to, as upper limit, a value according to the following formula which is applicable for η % P=percentage in moles with respect to the sum of the moles of said at least trifunctional molecule and dicarboylic acids moles N=average number of C atoms of the repeating diacid/diol unit in the main polymeric chain