Patent · US Active

Use of hyperbranched polyesters and/or polyester amides for separating oil-in-water emulsions

US9296957B2 · kind B2 · utility

0Cited by

12References

7Claims

0Family size

Assignee

BASF SE

Inventors

Bernd Bruchmann · Ludwigshafen, DE
Andreas Eichhorn · Munich, DE
Marcus Guzmann · Bad Windsheim, DE
Wolfgang Gaschler · Shanghai, CN

Key dates

Filing date	Oct 2, 2008
Grant date	Mar 29, 2016
Priority date	—
Expiry date	Feb 12, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G83/005
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A nondendrimeric hyperbranched polyester and/or polyesteramide which comprise alkenyl-substituted succinic acid units as demulsifiers for splitting oil-water emulsions, especially crude oil emulsions. In particular, the succinic acid is substituted with alkenyl groups containing 16 to 20 carbon atoms. Also, nondendrimeric hyperbranched polyesters or polyesteramides which comprise alkenyl-substituted succinic acid units, wherein the alkenyl group has from 16 to 20 carbon atoms. In addition to the alkenyl-substituted succinic acid units, the nondendrimeric hyperbranched polyester contains, as further units, at least trifunctional alcohols having been alkoxylated with an average of from 3 to 12 ethylene oxide units.

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