Patent · US Expired

Process for the preparation of polyurethanes which are dispersible in water

US4237264A · kind A · utility

78Cited by

13References

10Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Klaus Noll · Cologne, DE
Klaus Nachtkamp · Cologne, DE
Josef Pedain · Cologne, DE

Key dates

Filing date	Nov 8, 1977
Grant date	Dec 2, 1980
Priority date	—
Expiry date	Nov 8, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/283
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The instant invention is directed to novel polyurethanes which have a substantially linear molecular structure and which are dispersible in water, and the method of producing such polyurethanes. The polyurethanes of the present invention are characterized by an ethylene oxide unit content of from 0.5 to 10%, by weight, and by an ionic content of from 0.1 to 15 milliequivalents per 100 grams of polyurethane.

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