Patent · US Expired

Polyalkylene oxide-containing urethane polyols with sulphonic acid groups

US4245110A · kind A · utility

11Cited by

13References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Helmut Engelhard · Dormagen, DE
Gerhard D. Wolf · Dormagen, DE
Francis Bentz
Gunther Nischk · Dormagen, DE

Key dates

Filing date	Mar 10, 1975
Grant date	Jan 13, 1981
Priority date	—
Expiry date	Mar 10, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L33/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to urethanes which contain at least one sulphonic acid group and at least two free OH-groups and to a process for the preparation thereof.

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