Patent ID: 6365674
Filing Date: 2002-04-02
Classification: C08G,C08L

Abstract:
A thermoplastic molding composition comprising a polyurethane resin, the reactants used in its preparation comprise(i) at least one member selected from the group consisting of aliphatic and aromatic diisocyanates, (ii) at least one polymeric diol having a number average molecular weight of 500 to 10,000, selected from the group consisting of polyester polyol, polyether polyol, hydroxy-terminated polycarbonates and hydroxy-terminated copolymers of dialkyl siloxane and alkylene oxides, (iii) a reactive polyolefin containing isocyanate-reactive groups identical one to the other conforming to â€ƒwhere X denotes an isocyanate-reactive group identical one to the other selected from the group consisting of hydroxyl, amine and carboxylic acid functional groups, and where m is about 0 to 550 and n is about 0 to 270 and the number average molecular weight of said reactive polyolefin is about 500 to 15,000 g/mol and its functionality is in the range of about 1.7 to 2.5, and (iv) a chain extender, with the proviso that said (iii) is present in an amount of at least 1.0 equivalent % relative to the amount of said (ii).