COMPOSITE FOR DEHYDRATION AND DESALTING OF PETROLEUM EMULSIONS Russian patent published in 2006 - IPC C10G33/04 

FIELD: petroleum extracting and petroleum processing industry.

SUBSTANCE: invention relates to preparing petroleum-soluble composite possessing high demulsifying effect. The composite is prepared by simple components mixing. As an active base the composite comprises sodium salt of oxyethylated isononylphenol carboxymethylate with the oxyethylation degree value 10-12. As a low-temperature solvent the composition comprises methanol-aldehyde fraction (waste in production of butyl alcohols) and water in the following ratio of components, wt.-%: oxyethylated isononylphenol carboxymethylate sodium salt, 45.0-55.0; methanol-aldehyde fraction, 43.5-50.0, and water, the balance, up to 100. Invention provides high demulsified capacity of the composition with low solidification point.

EFFECT: improved and valuable properties of composite.

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