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US 6,180,683 B2Granted
Synergistic mixtures of alkylphenol-formaldehyde resins with oxalkylated amines as asphaltene dispersants
AssigneeClariant GmbH
InventorsDennis Miller, Michael Feustel, Axel Vollmer, Reinhard Vybiral, Dieter Hoffmann
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Abstract
The present invention relates to a synergistic mixture comprising, as asphaltene dispersant, from 5 to 95% by weight of a compound A of the formula I or II defined in the description, and from 5 to 95% by weight of a compound B of the formula (III) defined in the description, the substituents being defined as described in the description. The mixture is an excellent asphaltene dispersant in crude oils and products derived therefrom.
Claims6
A synergistic mixture comprising, as asphaltene dispersant, from 20 to 80% by weight of a compound A of the formula (I) or (II)
- where
- n is from 5 to 9 and
- R is C4-C12-alkyl, and
- from 20 to 80% by weight of a compound B of the formula (III)
- in which
- R1 is hydrogen or methyl
- z is 4,
- x and y, independently of one another, are a number from 5 to 80,
- A′ is a radical of the formula (VII),
- where
- R2 is a C6-C18-alkyl radical and
- m is 2 or 3.
9 more elements
Dependencies are inferred from the claim text.