Patent · US Active

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

US9303215B2 · kind B2 · utility

1Cited by

14References

18Claims

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	Nov 26, 2012
Grant date	Apr 5, 2016
Priority date	—
Expiry date	Nov 26, 2032

Classification

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

Abstract

The use of a nondendrimeric hyperbranched polyester and/or a polyesteramide which comprise alkenyl-substituted succinic acid units as a demulsifier for splitting oil-water emulsions. The succinic acid is substituted by at least one alkenyl group containing from 16 to 20 carbon atoms. Particular emulsions suitable for splitting are crude oil emulsions. Also, a nondendrimeric hyperbranched polyester or a polyesteramide which comprises alkenyl-substituted succinic acid units, the alkenyl group having 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.