Thermoplastic polyurethane method of making same and forming a m

Details Thermoplastic polyurethane method of making same and forming a m Thermoplastic polyurethane method of making same and forming a m

1993-07-14

1996-08-13

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 85, 264165, 604264, 604280, A61M 2500, C08G 1832, C08G 1848, C08G 1876

Patent

active

055457088

ABSTRACT:
A thermoplastic polyurethane having inherent softness properties is formed from a diisocyanate, a polyetherglycol and a mixture of diol chain extenders. The mixture of chain extenders includes a first diol and a second diol which has side chain branching. A method for making the polyurethane of the present invention includes mixing the components to induce an exothermic reaction, followed by curing. The polyurethane formed is suitable for melt processing into medical devices such as catheters, other tubing, hubs and the like.

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