Reaction products of polyisobutenes and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen and their use as fuel and lubricant additives

US5879420A · kind A · utility

Assignee

• BASF SE

Inventors

• Rudolf Kropp · Schifferstadt, DE
• Eckhard Hickmann · Schifferstadt, DE
• Klaus Ebel · Lampertheim, DE
• Wolfgang H. H. Gunther · Hersbruck, DE
• Hans Peter Rath · Havelsee, DE
• Harald Schwahn · Wiesloch, DE

Key dates

• Filing date: Jan 21, 1997
• Grant date: Mar 9, 1999
• Expiry date: Jan 21, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Reaction products of polyisobutenes having an average degree of polymerization P of from 10 to 100 and a content E of from 60 to 90% of double bonds which can react with maleic anhydride, E=100% corresponding to the theoretical value for the case where each molecule of the polyisobutene has such a reactive double bond, with oxides of nitrogen or mixtures of oxides of nitrogen and oxygen, are suitable as additives for fuels, in particular for gasoline engines, and for lubricants.