Shrojalkumar Desai,Marlene C. Schwarz,Mark Boden,Mohan Krishnan,Michael C. Smith,Frederick H. Strickler,Daniel J. Cooke
申请号：
US12492483
公开号：
US08324290B2
申请日:
2009.06.26
申请国别(地区):
US
年份:
2012
代理人:
摘要：
The present invention pertains to polyisobutylene urethane, urea and urethane/urea copolymers, to methods of making such copolymers and to medical devices that contain such polymers. According to certain aspects of the invention, polyisobutylene urethane, urea and urethane/urea copolymers are provided, which comprise a polyisobutylene segment, an additional polymeric segment that is not a polyisobutylene segment, and a segment comprising a residue of a diisocyanate. According to other aspects of the invention, polyisobutylene urethane, urea and urethane/urea copolymers are provided, which comprise a polyisobutylene segment and end groups that comprise alkyl-, alkenyl- or alkynyl-chain-containing end groups.
