Biocompatible polyurethane devices wherein polyurethane is modif

Details Biocompatible polyurethane devices wherein polyurethane is modif Biocompatible polyurethane devices wherein polyurethane is modif

1989-04-05

1991-05-21

Foelak, Morton

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 49, 528 71, 604266, C08G 1882, C08G 1887

Patent

active

050176641

ABSTRACT:
Modified-polyurethane block copolymers and devices formed therefrom demonstrate excellent biocompatibilty and improved physical and mechanical properties. In a preferred embodiment, from about 5 to about 25 percent of urethane hydrogen atoms are replaced with propyl sulfonate and propyl carboxylate groups to provide the modified copolymer.

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Hwang et al., "Properties of Polyurethane Anioniomers: Ionization via Bimolecular Nucleophilic Displacement of Urethane Hydrogen,", J. Macromol. Sci.-Phys., B23, 154-174 (1984).

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