Patent · US Active

Polycarbonate polyols, polyisocyanate prepolymers and polyurethane and polyurethane urea elastomers based thereon

US11926701B2 · kind B2 · utility

0Cited by

8References

15Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Hartmut Nefzger · Pulheim, DE
Harald Knaup · Neuss, DE
Hans-Peter Huber · Wohlen, CH
Andreas Stumpf · Leverkusen, DE
Stephan Reiter · Langenfeld, DE

Key dates

Filing date	Dec 12, 2018
Grant date	Mar 12, 2024
Priority date	—
Expiry date	Jul 6, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G64/0208
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to novel high-value polycarbonate polyols, to processes for the production thereof, to polyisocyanate prepolymers obtainable therefrom and also polyurethane (PUR) and polyurethane urea elastomers which under particularly demanding applications show unique combinations of processing characteristics, hydrolysis and oxidation stability, mechanical and dynamic mechanical properties.

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