Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 21, 2008
Patent Application Number
10485390
Date Filed
July 26, 2002
Patent Primary Examiner
Patent abstract
A method of reducing the aggregation and deposition of asphaltene from a fluid containing asphaltene, such as crude oil, which method comprises the addition to the fluid of a compound of formula (1): wherein A is an optionally substituted ring system containing 6 to 14 carbon atoms; n is at least 1 and may equal the number of positions available for substitution in A; each X is independently a linker group; and each R is independently a hydrocarbyl group containing 10 to 25 carbon atoms.
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