Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ansgar Behler0
Heinz Mueller0
Jens Hartmann0
Nadja Herzog0
Date of Patent
June 22, 2010
Patent Application Number
10566225
Date Filed
July 20, 2004
Patent Primary Examiner
Patent 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.
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