Patent · US Active

Polyurethane/urea compositions

US10723844B2 · kind B2 · utility

2Cited by

5References

25Claims

0Family size

Assignee

COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION · AU

Inventors

Pathiraja Arachchillage Gunatillake · Melbourne, AU
Mark Bown · Melbourne, AU
Raju Adhikari · Melbourne, AU

Key dates

Filing date	Mar 26, 2019
Grant date	Jul 28, 2020
Priority date	—
Expiry date	Mar 26, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2207/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A valve in the form of a medical device, article, or implant that is composed wholly or partly of a biomaterial, the biomaterial comprising a polyurethane or polyurethane urea elastomeric composition having a plurality of soft segments and hard segments, such that the plurality of soft segments are each derived from at least one block copolymer segment of Formula 1 and optionally an additional polyol or polyamine. The valve may include a plurality of valve leaflets and a support structure with one or more of the valve leaflets being composed wholly or partly of the biomaterial.

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