Patent · US Active

Iminooxadiazinedione polyisocyanates

US9926402B2 · kind B2 · utility

11Cited by

7References

15Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Hans-Josef Laas · Odenthal, DE
Dieter Mager · Leverkusen, DE

Key dates

Filing date	Dec 8, 2014
Grant date	Mar 27, 2018
Priority date	—
Expiry date	Dec 8, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/792
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for producing polyisocyanates comprising reacting an isocyanate component in the presence of a mono- or multinuclear complex of titanium, zirconium and/or hafnium as catalyst to give polyisocyanates having a content of iminooxadiazinedione groups of ≥20 mol % based on the total amount of isocyanurate and iminooxadiazinedione groups. The present invention also provides polyisocyanates obtainable by the process according to the invention and both polyurethanes and polyureas obtainable by reacting the polyisocyanates with at least one hydroxy-functional or amino-functional component respectively.

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