Patent · US Expired

Crosslinked water-soluble or water-dispersible polyurethanes

US6262176A · kind A · utility

5Cited by

4References

7Claims

0Family size

Assignee

BASF SE

Inventors

Son Nguyen Kim · Hemsbach, DE
Axel Sanner · Bischofswerda, DE
Peter Hossel · Schifferstadt, DE
Volker Schehlmann · Schifferstadt, DE

Key dates

Filing date	May 3, 1999
Grant date	Jul 17, 2001
Priority date	—
Expiry date	May 3, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/755
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to crosslinked, water-soluble or water-dispersible polyurethanes of PA1 A) at least one water-soluble or water-dispersible polyurethane prepolymer having terminal isocyanate groups of PA2 a) at least one compound having a molecular weight in the range from 56 to 300 which contains two active hydrogen atoms per molecule, PA2 b) at least one polymer containing two active hydrogen atoms per molecule, PA2 c) at least one compound which contains two active hydrogen atoms and at least one ionogenic or ionic group per molecule, PA2 d) at least one diisocyanate, PA1 B) at least one polymer containing groups which are reactive toward isocyanate groups, chosen from hydroxyl, and primary and secondary amino and/or carboxyl groups, or the salts thereof.

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