Patent · US Active

Bulk material comprising solid diisocyanates and prepolymers containing urethane groups obtainable therefrom

US11795260B2 · kind B2 · utility

0Cited by

6References

4Claims

0Family size

Assignee

Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

Michael Merkel · Hof, DE
Anna-Marie Zorn · Ettlingen, DE
Rainer Bellinghausen · Neunburg vorm Wald, DE
Pascal Scherpian · Moers, DE
Ralph Weber · Rio de Janeiro, BR

Key dates

Filing date	Nov 23, 2020
Grant date	Oct 24, 2023
Priority date	—
Expiry date	Aug 11, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/7678
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a bulk material comprising solid diisocyanate, especially naphthalene 1,5-diisocyanate or p-phenylene diisocyanate, to a process for production thereof, and to a process for preparing isocyanate prepolymers using the bulk material of the invention, to the isocyanate prepolymers themselves and to the use thereof for preparation of polyurethane elastomers, especially cast polyurethane elastomers.

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