LOW TEMPERATURE IMPACT RESISTANT, EASILY FLOWING, THERMOPLASTIC POLYURETHANE ELASTOMER COMPOSITIONS, A PROCESS FOR THEIR PREPARATION AND THEIR USE

摘要

The present invention deals with low temperature impact resistant, easily flowing, thermoplastic polyurethane elastomer compositions, comprising: A) 5-95 parts by weight of at least one thermoplastic polyurethane elastomer (A) having a Shore A hardness less han 95; and B) 95-5 parts by weight of at least one thermoplastic polyurethane elastomer (B) having a Shore A hardness greater than 98, whereby the parts by weight of (A) and (B) total 100 parts by weight and C) 0-60 weight percent based on the weight of (A) and (B) of a reinforcing filler. The products are prepared by melting together polyurethane elastomers (A) and (B) at temperatures of from 140.degree. 250.degree. C, preferably in an extruder, and are most preferred for the preparation of ski boots and injection molded articles for motor vehicles.