The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1996
Filed:
Jun. 07, 1995
John R Blackborow, Edinburgh, GB;
Michael J Clarke, Burton Pidsea, GB;
BP Chemicals Limited, London, GB;
Abstract
A fuel composition which comprises a major amount of a liquid hydrocarbon fuel and, in an amount to provide detergency, a polyisobutene (PIB) succinimide derived from the reaction of a polyisobutene--substituted succinic acylating agent and an amine having at least one reactive hydrogen bonded to an amine nitrogen is characterised in that the polyisobutene--substituted succinic acylating agent is obtained by a thermal route and the polyisobutene substituent is derived from a highly reactive polyisobutene ie having a high proportion of vinylidene groups --CH.sub.2 CMe.dbd.CH.sub.2. The PIB-substituted succinic acylating agent is preferably obtained by the thermal reaction of the highly reactive polyisobutene with a succinic acylating agent e.g. maleic anhydride.