Patent · US Expired

Polyurea-modified polyetherurethanes and their use as emulsion breakers for water-in-oil emulsions

US4870151A · kind A · utility

7Cited by

4References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Thomas Scholl · New Haven, US
Hermann Perrey · Krefeld, DE
Thomas Augustin · Cameron Park, US
Christian Wegner · Cologne, DE

Key dates

Filing date	Sep 28, 1988
Grant date	Sep 26, 1989
Priority date	—
Expiry date	Sep 28, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/3234
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Specific new polyurea-modified polyetherurethanes and their uses as breakers for water-in-oil emulsions, in particular as breakers for water-in-oil emulsions.

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