Copolymers comprising ethylene, vinyl esters and esters of (meth)acrylic acid, their formulations and use as pour point depressant, wax inhibitor and flow enhancer for crude oils

US10208192B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ivette Garcia Castro · Ludwigshafen, DE
• Stefan Frenzel · Weinheim, DE
• Maria Heuken · Schwarzheide, DE
• Jennifer Jackson · Reading, US

Key dates

• Filing date: Feb 16, 2015
• Grant date: Feb 19, 2019
• Expiry date: Jul 18, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L2270/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Copolymers comprising ethylene, vinyl esters, in particular vinyl acetate and esters of (meth)acrylic acid, selected from esters comprising branched alkyl, cyclic alkyl or optionally alkyl substituted aryl moieties and having a weight average molecular weight of 35,000 g/mol to 150,000 g/mol, formulations of such copolymers in organic solvents and their use as pour point depressant, wax inhibitor and flow enhancer for crude oils.