Patent · US Active

Method for deblocking a blocked isocyanate and method of making a polyurethane

US11254784B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignees

University of Massachusetts · US
BASF SE

Inventors

Madhu Sheri · Sunderland, US
Umesh Upendra Choudhary · Santa Cruz, US
Todd Emrick · Sunderland, US
Sunitha Grandhee · Novi, US

Key dates

Filing date	Aug 31, 2018
Grant date	Feb 22, 2022
Priority date	—
Expiry date	Nov 21, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2110/0083
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A method for deblocking a blocked isocyanate is described herein. The method includes contacting a blocked isocyanate and a halide ion source under conditions effective to provide a deblocked isocyanate. A method of making a polyurethane is also disclosed. The method of making a polyurethane includes combining a blocked isocyanate, a polyol, and a halide ion source in the presence of solvent and under conditions effective to provide the polyurethane.

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