THERMOPLASTIC POLYESTER HAVING IMPROVED RESISTANCE TO THE PHENOMENON OF CRACKING

摘要

The invention relates to the field of polymers, particularly a thermolastic polyester having an improved resistance to the cracking phenomenon, to the production method thereof, and to the use of same for producing plastic items. The thermoplastic polyester comprises at least one 1,4 : 3,6-dianhydrohexitol motif (A), at least one diol motif (B), other than the 1,4 : 3,6-dianhydrohexitol motif (A), at least one aromatic dicarboxylic acid motif (C) and at least one branching agent, and has a reduced viscosity in solution of a minimum of 0.75 dL/g and a maximum of 1.5 dL/g. Said thermoplastic polyester is advantageous in that it is particularly resistant to the phenomonon of cracking and also has improved esterification and polycondensation times during the production method thereof.