Use of organofunctionally modified polysiloxanes for defoaming diesel

US5613988A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Roland Spiegler · Essen, DE
• Michael Keup · Essen, DE
• Kerstin Kugel · Velbert, DE
• Peter Lersch · Oberhausen, DE
• Stefan Silber · Krefeld, DE

Key dates

• Filing date: Dec 19, 1994
• Grant date: Mar 25, 1997
• Expiry date: Dec 19, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B3/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of defoaming diesel fuel by adding an organofunctionally modified polysiloxane of the general Formula I ##STR1## wherein R.sup.1 are alkyl groups with 1 to 4 carbon atoms or aryl groups with the proviso that at least 80% of the R.sup.1 groups are methyl groups, PA1 R.sup.2 are the same or different in the molecule PA1 30 to 90% of R.sup.2 having the same meaning as R.sup.1, and PA1 70 to 10% of R.sup.2 consisting of a mixture of R.sup.2A and R.sup.2B groups which differ in polarity, is described. The inventive polysiloxane is added in an amount of 0.5 to 50 ppm, based on the diesel fuel.