Use of demulsifying mixtures for breaking petroleum emulsions

US4183820A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Heinz Theile · Pocking, DE
• Hermann Hoffmann · Echterdingen, DE
• Gerd Rossmy · Werden, DE
• Gotz Koerner · Essen, DE
• Peter Zaske

Key dates

• Filing date: Aug 10, 1978
• Grant date: Jan 15, 1980
• Expiry date: Aug 10, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G33/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to an emulsion-breaking composition comprising about 70 to 99.8% by weight of at least one silicon-free demulsifier, and about 0.2 to 30% by weight of a mixed polyoxyalkylene-polysiloxane block polymerizate, the polyoxyalkylene blocks of which have a molecular weight of about 500 to 4000 and are composed of polyoxyethylene and polyoxypropylene blocks in a weight ratio of 40 to 60 to 100:0, and the polysiloxane blocks of which contain 3 to 50 silicon atoms per block. The invention also includes a process for breaking emulsions using the novel emulsion-breaking composition.