Patent · US Active

Borehole treating substance containing ether carboxylic acids

US7741248B2 · kind B2 · utility

21Cited by

26References

19Claims

0Family size

Assignee

Emery Oleochemicals GmbH · DE

Inventors

Heinz Mueller · Monheim, DE
Nadja Herzog · Korschenbroich, DE
Ansgar Behler · Bottrop, DE
Jens Hartmann · Frankenthal (Pfalz), DE

Key dates

Filing date	Jul 20, 2004
Grant date	Jun 22, 2010
Priority date	—
Expiry date	Nov 2, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/28
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A well servicing composition containing an aqueous phase and an oil phase and an ether carboxylic acid of the formula:RO(CH2CH2O)x(CH2CHR1O)yCH2—COOXwherein, R is a saturated or unsaturated, branched or unbranched alkyl or alkenyl group containing 6 to 22 carbon atoms, x is a number from 1 to 20 and y is 0 or a number from 1 to 20, provided that the sum of x and y is at least 1 and at most 25, R1 is an alkyl group containing 1 to 4 carbon atoms and X comprises at least one member selected from the group consisting of a hydrogen atom, monovalent cations and polyvalent cations.

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