Patent · US Active

Method for producing compact polyurethanes with improved hydrolytic stability

US10822519B2 · kind B2 · utility

0Cited by

10References

16Claims

0Family size

Assignee

BASF SE

Inventors

Andre Kamm · Bohmte, DE
Hans-Josef Thomas · Korschenbroich, DE

Key dates

Filing date	Mar 10, 2016
Grant date	Nov 3, 2020
Priority date	—
Expiry date	Mar 10, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B36/003
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing a polyurethane, comprising the reaction of a composition (Z1) at least comprising a compound (P1) reactive toward isocyanates, and a composition (Z2) at least comprising a polyisocyanate, wherein compound (P1) is obtained by the reaction of at least one polyepoxide with a compound (V1) selected from the group consisting of polyetheramines and polyetherols. The present invention further relates to polyurethanes obtained by such a process, and to the use of a polyurethane of the invention for coating of pipelines, as a “field joint” or of subsea equipment, for example “christmas trees”, for the offshore sector, and as a glass-syntactic polyurethane.

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