polyurethane material preparation process, polyurethane material and method of using polyurethane material

摘要

The present invention relates to processes for preparing polyurethane-type fiber composite material, wherein said process comprises (a) di and / or polyisocyanates, (b) compounds containing isocyanate-reactive hydrogen atoms, ( c) compounds comprising at least one carbon-carbon double bond, (d) optionally a catalyst for accelerating the urethane reaction, (e) optionally a free radical initiator and (f) optionally materials of added and auxiliary substances which are mixed into a reaction mixture with simultaneous wetting of fiber material and cured, wherein the compounds containing isocyanate-reactive hydrogen atoms contain on average no less than 1.5 isocyanate-reactive hydrogen groups per molecule, the double bond density of compound (c) is not less than 21%, the double bond functionality of compound (c) is more than 1, said compound (c) is not o contains isocyanate-reactive groups and the equivalence ratio between di and / or polyisocyanate (a) isocyanate groups and isocyanate-reactive hydrogen atoms of compounds (b) is in the range 0.8 to 2 The present invention further relates to a polyurethane fiber composite material obtainable by a process according to the present invention and also to the method of using the polyurethane fiber composite material as component parts. structural.