Biostable polyurethane

Details Biostable polyurethane Biostable polyurethane

1991-05-09

1992-10-27

Kight, III, John

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...

424 7808, 514 56, 536 21, 428 369, 428364, 428398, C08G 1870, C08B 3710, A61K 31725, A61K 31765

Patent

active

051590514

ABSTRACT:
A thermoplastic polyurethane having prolonged biostability has tertiary amino groups in the polymer chain. Protonation of the amino groups with an aqueous acid causes the polymer to absorb up to 1,700% by weight of water and swell. The protonated amino groups form a complex with an antithrombogenic agent to give an antithrombogenic polyurethane. The invention includes a shaped article of the polyurethane.

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