Middle distillates of crude oil having improved cold flow properties

US5178641A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerd Konrad · Speyer, DE
• Bernd Wenderoth · Lampertheim, DE
• Klaus Barthold · Mannheim, DE
• Erich Schwartz · Ludwigshafen, DE
• Hans-Juergen Raubenheimer · Ketsch, DE
• Heinrich Hartmann · Schifferstadt, DE

Key dates

• Filing date: Nov 13, 1991
• Grant date: Jan 12, 1993
• Expiry date: Nov 13, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L1/1973
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Crude oil middle distillates with improved cold flow properties, containing small amounts of PA0 A. conventional flow improver on an ethylene base, and PA0 B. copolymers which consist of 10 to 95 mol-% of one or more acrylacrylates or alkylmethacrylates with C.sub.1 - to C.sub.26 -alkyl chains, and of 5 to 90 mol-% of one or more ethylenically unsaturated dicarboxylic acids or their anhydrides, where the copolymer is reacted to a large extent with one or several primary or secondary amines into the monoamide or amide/ammonia salt of dicarboxylic acid, and the quantitative proportion of A to B is from 40 to 60 up to 95 to 5.