Patent · US Active

End-capped polyisobutylene polyurethane

US11472911B2 · kind B2 · utility

1Cited by

203References

11Claims

0Family size

Assignee

Cardiac Pacemakers, Inc. · US

Inventors

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

Key dates

Filing date	Jan 15, 2019
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Jan 27, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/833
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.