Process for the manufacture of thermoplastic polyurethans

Details Process for the manufacture of thermoplastic polyurethans Process for the manufacture of thermoplastic polyurethans

C - Chemistry, Metallurgy

08

G

402/157

C08G 18/65 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01)

Patent

CA 1328029

ABSTRACT OF THE DISCLOSURE The invention concerns a process for the manufacture of thermoplastic polyurethanes wherein an organic polyisocyanate is made to polymerize with a polyol (reactive with same isocyanate) in the presence of a chain extending agent having a molecular weight lower than 400, under continuous stirring, at a temperature higher than 150°C and for a time sufficient to obtain a product having a melt flow index lower than 25 g/10'.

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