Method of demulsifying crude oil and water mixtures with copolymers of acrylates or methacrylates and hydrophilic commonomers

US5472617A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Barthold · Mannheim, DE
• Richard Baur · Mutterstadt, DE
• Stevano Crema · Denville, US
• Knut Oppenlaender · Ludwigshafen, DE
• Juergen Lasowski · Tokyo, JP

Key dates

• Filing date: Dec 27, 1993
• Grant date: Dec 5, 1995
• Expiry date: Dec 27, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of demulsifying a crude oil and water composition involves adding demulsifiers made from acrylic acid/methacrylic acid copolymerized with hydrophilic monomers.