Paraffin dispersants for crude oil middle distillates

US6071993A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Wenderoth · Lampertheim, DE
• Ljiljana Uzelac · Ludwigshafen, DE
• Dieter Faul · Niederkirchen, DE
• Gabriele Dralle-Voss · Darmstadt, DE

Key dates

• Filing date: Nov 30, 1998
• Grant date: Jun 6, 2000
• Expiry date: Nov 30, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L1/2437
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A mixture contains PA1 (a) from 10 to 90% by weight of at least one imide of a copolymer based on an .alpha.-olefin and an ethylenically unsaturated dicarboxylic acid and a polyamine and PA1 (b) from 10 to 90% by weight of at least one reaction product of a poly(C.sub.2 -C.sub.20 -carboxylic acid) having a tertiary amino group with secondary amines and is used as a paraffin dispersant in mineral oil middle distillates.