Patent ID: 6120895
Filing Date: 2000-09-19
Classification: C08G,Y10T

Abstract:
Biodegradable polyesters based onA) 95-99.99 mol % of at least one polyester containing as monomeric building blocksa.sub.1) an acid component comprisinga.sub.11) 20-95 mol % of at least one aliphatic or cycloaliphatic dicarboxylic acid or its ester-forming derivative anda.sub.12) 5-80 mol % of at least one aromatic dicarboxylic acid or its ester-forming derivative, the proportions of a.sub.11 and a.sub.12 being based in each case on the total amount of a.sub.11 and a.sub.12, anda.sub.2) at least one dihydroxy compound or at least one amino alcohol or their mixturesandB) 0.01-5 mol % of a mixture comprisingb.sub.1) 45.80% by weight of at least one mononuclear isocyanurate (b.sub.11) or at least one compound (b.sub.12) which contains two functional groups capable of reacting with the end groups of polyester A or mixtures of b.sub.11 and b.sub.12,b.sub.2) 13-25% by weight of at least one binuclear isocyanurate (b.sub.21) or at least one compound (b.sub.22) which contains three functional groups capable of reacting with the end groups of polyester A or mixtures of b.sub.21 and b.sub.22,b.sub.3) 5-12% by weight of at least one trinuclear isocyanurate (b.sub.31) or at least one compound (b.sub.32) which contains four functional groups capable of reaction with the end groups of polyester A or mixtures of b.sub.31 and b.sub.32 andb.sub.4) 2-18% by weight of at least one tetra- or higher-nuclear isocyanurate (b.sub.41) or mixtures of different isocyanurates (b.sub.41).