Patent · US Expired

Method for demulsifying emulsions

US6310106A · kind A · utility

7Cited by

12References

9Claims

0Family size

Assignee

Cognis Deutschland GmbH · DE

Inventors

Stefan Podubrin · Wiesloch, DE
Wolfgang Breuer · Korschenbroich, DE
Claus-Peter Herold · Mettmann, DE
Andreas Heidbreder · Goldkronach, DE
Thomas Foerster · Goldkronach, DE
Martina Hollenbrock · Goldkronach, DE

Key dates

Filing date	May 12, 2000
Grant date	Oct 30, 2001
Priority date	—
Expiry date	May 12, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2650/34
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for breaking an emulsion into a water phase and an oil phase involving: (a) providing an emulsion containing an oil phase and a water phase; (b) providing an alkoxylated C.sub.10-24 carboxylic acid ester derived by the addition of ethylene oxide and/or propylene oxide onto a ring opened epoxidized C.sub.10-24 carboxylic acid triglyceride which is ring opened with a C.sub.6-18 carboxylic acid; and (c) contacting the emulsion with a demulsifying effective amount of the alkoxylated C.sub.10-24 carboxylic acid ester. Said process has application on crude oil emulsions.

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