Thermoplastic polyurethanes and their preparation

Details Thermoplastic polyurethanes and their preparation Thermoplastic polyurethanes and their preparation

C - Chemistry, Metallurgy

08

G

C08G 18/08 (2006.01) C08J 11/06 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2219846

Thermoplastic polyurethanes are prepared by reacting (a) isocyanates with (b) compounds reactive toward isocyanates, in the presence or absence of (c) chain extenders, (d) catalysts and (e) customary auxiliaries and additives and adding crosslinked polyurethanes in comminuted form before, during and/or after the reaction.

Polyuréthanes thermoplastiques préparés par réaction (a) d'isocyanates avec (b) des composés réactifs avec les isocyanates, en présence ou en l'absence (c) d'extenseurs de chaîne, (d) de catalyseurs et (e) d'agents auxiliaires et adjuvants usuels, avec addition des polyuréthanes réticulés et finement broyés avant, pendant et (ou) après la réaction.

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