Patent · US Expired

Reduction in the pH of anionic polyurethane dispersions which are stabilized by carboxylate or sulfonate groups

US5470899A · kind A · utility

8Cited by

2References

3Claims

0Family size

Assignee

BASF SE

Inventors

Erich Gulbins · Heidelberg, DE
Karl Haeberle · Speyer, DE
Ulrike Licht · Mannheim, DE
Alexander Wallon · Schifferstadt, DE

Key dates

Filing date	Dec 28, 1993
Grant date	Nov 28, 1995
Priority date	—
Expiry date	Dec 28, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for reducing the pH of anionic polyurethane dispersions which are stabilized by carboxylate or sulfonate groups, which comprises adding a compound which has from one to four ester groups but no acid group or acid halide or anhydride group to the dispersions.

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