THERMOPLASTIC ELASTOMERS

摘要

- 12 - O.Z. 0050/41420 s In thermoplastic elastomers selected from the group consisting of the thermoplastic polyurethanes, of the polyetheresters and of the polyetheramides which are derived from polyetherpolycarbonatediols as diol components, the polyetherpolycarbonatediols used are reaction products of phosgene, dialkyl carbonates having C1-C4-alkyl groups or cyclic carbonates having C2-C4-alkylene bridges or mixtures thereof with mixtures of a1) from 10 to 100 mol % of polyoxytetramethylenediol having a number average molecular weight ?n of from 150 to 500 and a2) from 0 to 90 mol % of polyoxyalkylenediols which differ from a1) and have C2-C8-alkylene groups, aliphatic alkanediols of 2 to 14 carbon atoms, alicyclic alkanediols of 3 to 14 carbon atoms or alkylene oxides of 2 or 3 carbon atoms, or mixtures thereof.