Photocrosslinked polymers for enhanced durability

US10835638B2 · kind B2 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• Joseph Thomas Delaney, JR. · Minneapolis, US
• David R. Wulfman · Minneapolis, US
• Patrick Willoughby · Shoreview, US
• Andrew J. Ro · Maple Grove, US

Key dates

• Filing date: Aug 16, 2018
• Grant date: Nov 17, 2020
• Expiry date: Nov 9, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A block copolymer including a plurality of polymeric chains and a plurality of cross-linking compound residues linking together the plurality of polymeric chains. The plurality of polymeric chains forms a plurality of hard domains and a plurality of soft domains. Each polymeric chain includes a plurality of soft segments and a plurality of hard segments. The plurality of soft segments includes a polyisobutylene diol or diamine residue. The plurality of soft segments forms the plurality of soft domains. The plurality of hard segments including a diisocyanate residue. The plurality of hard segments forms the plurality of hard domains. The cross-linking compound residues link together the hard segments of the plurality of polymeric chains.