METHODS FOR PRODUCING TRANSPARENT, THERMOPLASTIC POLYURETHANE HAVING HIGH MECHANICAL STRENGTH AND HARDNESS

摘要

The present invention relates to thermoplastic polyurethanes obtainable or obtained by reaction of at least one aliphatic polyisocyanate; at least one chain extender; and at least one polyol composition, where the polyol composition comprises a polyol selected from the group consisting of polyetherols and at least one bisphenol derivative selected from the group consisting of bisphenol A derivatives with a molecular weight Mw>315 g/mol and bisphenol S derivatives with a molecular weight Mw>315 g/mol, where at least one of the OH groups of the bisphenol derivative is alkoxylated, and to processes for producing such thermoplastic polyurethanes and to the use of a thermoplastic polyurethane according to the invention for producing extrusion products, films and moldings.