Patent · US Expired

Surface active compound, a microemulsion containing said compound and the use thereof

US4990269A · kind A · utility

6Cited by

12References

8Claims

0Family size

Assignees

Berol Kemi AB
Tendex Kjemi Service A/S · NO

Inventors

Eva Andreasson · Stockholm, SE
Krister Holmberg · Mölndal, SE
Borje Nystrom · Knivsta, SE
Eva Osterberg · Gothenburg, SE
Finn Egeli · Stavanger, NO

Key dates

Filing date	Sep 21, 1989
Grant date	Feb 5, 1991
Priority date	—
Expiry date	Sep 21, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S507/938
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A surface active compound for use in microemulsions useful in oil recovery, wood impregnating, dry cleaning, cleaning of hard surfaces and for floor polishing, which has one hydrophobic group, containing 9-50, preferably 12-35 carbon atoms and 2-6 separate hydrophilic end groups, at least one of the hydrophilic end groups being a nonionic group obtained by reacting a compound having a reactive hydrogen atom with an alkylene oxide having 2-4 carbon atoms and at least one being an anionic group.

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