Patent · US Expired

Synergistic mixtures of alkylphenol-formaldehyde resins with oxalkylated amines as asphaltene dispersants

US6180683A · kind A · utility

30Cited by

13References

6Claims

0Family size

Assignee

Clariant Corporation · DE

Inventors

Dennis Miller · Kelkheim, DE
Michael Feustel · Kelkheim, DE
Axel Boris Vollmer · Kriftel, DE
Reinhard Vybiral · Altötting, DE
Dieter Hoffmann · Marburg, DE

Key dates

Filing date	Mar 9, 1998
Grant date	Jan 30, 2001
Priority date	—
Expiry date	Mar 9, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S516/916
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

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.

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