End-capped polyisobutylene polyurethane

A polymeric material includes a polyisobutylene-polyurethane block copolymer. The polyisobutylene-polyurethane block copolymer includes soft segments, hard segments, and end groups. The soft segments include a polyisobutylene diol residue. The hard segments include a diisocyanate residue. The end gr...

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Bibliographische Detailangaben
Hauptverfasser: Delaney, Jr., Joseph T, Willoughby, Patrick, Gurung, Niraj, Ro, Andrew J, Wulfman, David R
Format: Patent
Sprache:eng
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Zusammenfassung:A polymeric material includes a polyisobutylene-polyurethane block copolymer. The polyisobutylene-polyurethane block copolymer includes soft segments, hard segments, and end groups. The soft segments include a polyisobutylene diol residue. The hard segments include a diisocyanate residue. The end groups are bonded by urea bonds to a portion of the diisocyanate residue. The end groups include a residue of a mono-functional amine.