Patent · US Expired

Storage-stable, liquid carbodiimide modified polyisocyanates and process for their manufacture

US4260554A · kind A · utility

9Cited by

6References

7Claims

0Family size

Assignee

BASF SE

Inventors

Rainer Ohlinger · Hannover, DE
Georg Falkenstein
Rolf Wurmb
Matthias Marx · Fürstenfeldbruck, DE

Key dates

Filing date	Aug 27, 1979
Grant date	Apr 7, 1981
Priority date	—
Expiry date	Aug 27, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/025
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Storage-stable, liquid carbodiimide-modified polyisocyanates are prepared by condensation of polyisocyanates in the presence of catalytic amounts of phospholine, phospholidine, phospholine oxides and/or phospholidine oxides, said condensation terminated and the products stabilized by means of perchloric acid or trifluoromethanesulfonic acid.

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