Crosslinkable polyisobutylene-based polymers and medical devices containing the same
First Claim
1. A crosslinkable composition comprising (a) a polymer comprising a polyisobutylene segment and two or more unsaturated reactive groups, wherein the polymer is a urethane, urea, or urethane/urea copolymer, and (b) a free radical initiator.
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Abstract
The present invention pertains to crosslinkable and crosslinked polyisobutylene-based polymers, to compositions that contain such polymers, and to medical devices that are formed using such polymers. According to one aspect, the present invention pertains to crosslinkable and crosslinked compositions that comprise a copolymer that comprises a polyisobutylene segment and two or more reactive groups. According to another aspect, the present invention pertains to medical devices that contain such compositions. According to another aspect, the present invention pertains to methods of making medical devices using such compositions.
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30 Claims
- 1. A crosslinkable composition comprising (a) a polymer comprising a polyisobutylene segment and two or more unsaturated reactive groups, wherein the polymer is a urethane, urea, or urethane/urea copolymer, and (b) a free radical initiator.
Specification