Cold flow improver

US8338344B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Frank-Olaf Maehling · Mannheim, DE
• Thomas Pfeiffer · Kumhausen, DE
• Uwe Rebholz · Mehlingen, DE
• Irene Troetsch-Schaller · Bissersheim, DE
• Thomas Zelinski · Menasha, US

Key dates

• Filing date: Nov 16, 2007
• Grant date: Dec 25, 2012
• Expiry date: Sep 9, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2030/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to the use of polymers which comprise, in copolymerized form, an α-olefin, at least one alkenyl ester and at least one ester of an α,β-unsaturated carboxylic acid with higher alcohols as an additive for fuel oils and lubricants and especially as a cold flow improver in fuel oils; to the fuel oils and lubricants additized with these polymers; and to additive packages comprising such copolymers. The invention also relates to quaternary and higher copolymers which comprise the abovementioned monomers in copolymerized form.