Polysiloxane polyurea urethanes
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United States of America Patent
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Jun 22, 1993
Issued Date -
N/A
app pub date -
Nov 19, 1990
filing date -
Aug 12, 1987
priority date (Note) -
Expired
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Abstract
Polysiloxane-containing polyurea and polyurea urethane block copolymers and devices formed therefrom are biocompatible and demonstrate improved physical and mechanical properties. The pre-reaction of an amine-terminated polysiloxane soft segment with an organic diisocyanate provides an oligomer that enhances the hydrophilic properties of the copolymer.
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