cross-linked polyurethane obtainable by a process, composite, admixture of a cross-linked polyurethane, process for producing a composite and use of cross-linked polyurethane

摘要

The present invention relates to a cross-linked polyurethane obtainable by a process wherein (a) polyisocyanates are mixed with (b) polymeric compounds having at least two hydrogen atoms which are reactive with isocyanate groups and comprising (b1) at least a diene block copolymer that has at least two hydrogen atoms that are reactive to isocyanate and have a polydiene backbone and at least one side chain or end chain composed of a polyether and / or polyester, wherein the weight ratio of the main polydiene chain is based on the total weight of the diene block copolymer b1), from 25 to 95% by weight, and optionally (b2) other polymeric compounds having at least two hydrogen atoms which are reactive to isocyanate, optionally (c catalyst, optionally (d) vulcanizing agents optionally (e) chain extenders and / or cross-linking agents, optionally (f) blowing agent and optionally Auxiliary agents (g) and / or additives to produce a reaction mixture, the mixture is cured to produce the bondable polyurethane and the double bonds of the diene block copolymer (b1) are crosslinked. The present invention further relates to composites and composite mixtures of cross-linked polyurethane and rubber and also to the use of cross-linked polyurethane as tires or tire parts such as cable sheath, shoe sole, roll or hose.