THERMOPLASTIC POLYURETHANE CONTAINING SILANE GROUPS

摘要

The invention relates to a thermoplastic polyurethane comprising the following structural unit: R₂-CO-NH-R-Si(R₁)_3-x(OR₁)_x where: R is an aliphatic, araliphatic, or aromatic organic radical having from 1 to 20 hydrocarbon atoms, R₁ is an alkyl radical or aryl radical having from 1 to 10 carbon atoms, R₂ is -NR₃-CO-R₄ or -O-R₅-O-, R₃ is a section of the polymer chain of the thermoplastic polyurethane, in particular a radical which derives from the diisocyanate used to prepare the thermoplastic polyurethane, R₄ is a section of the polymer chain of the thermoplastic polyurethane, in particular a radical which derives from the following compounds used to prepare the thermoplastic polyurethane: compounds (b) reactive toward isocyanates, or from the chain extender (c), R₅ is an alkylene radical having from 2 to 8 carbon atoms, preferably from 3 to 6 carbon atoms, and x is 1, 2 or 3.