Patent · US Active

Polyisocyanurate plastics having high thermal stability

US10597484B2 · kind B2 · utility

1Cited by

35References

2Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Dirk Achten · Leverkusen, DE
Mathias Matner · Neuss, DE
Holger Casselmann · Odenthal, DE
Michael Ehlers · Krefeld, DE

Key dates

Filing date	Apr 21, 2016
Grant date	Mar 24, 2020
Priority date	—
Expiry date	Apr 21, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2115/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a polyisocyanurate plastic obtainable by catalytic trimenzation of a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates, where the isocyanurate structure content in the polyisocyanate composition A) is at least 50 mol %, based on the sum total of the oligomeric structures from the group consisting of uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and oxadiazinetrione structure that are present in the polyisocyanate composition A). The present invention further relates to a transparent element comprising or consisting of the polyisocyanurate plastic. The invention likewise relates to a process for producing the polyisocyanurate plastics.

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