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:
Jul. 19, 1994
Filed:
Mar. 18, 1985
Charles Cane, Hull, GB;
Anthony Garner, Hull, GB;
BP Chemicals (Additives) Limited, London, GB;
Abstract
Alkaline earth metal alkyl phenates are produced by reacting at elevated temperature, in the presence or absence of sulphur, an alkyl phenol with an alkaline earth metal base in the presence as solvent of either an alkylene or polyalkylene alkyl ether of formula R(OR.sup.1).sub.x OR.sup.2 wherein R is C.sub.1 to C.sub.6 alkyl, R.sup.1 is alkylene, R.sup.2 is hydrogen or C.sub.1 to C.sub.6 alkyl and x is an integer in the range 1 to 6 and as catalyst an inorganic halide, preferably a hydrogen halide, an ammonium halide, an alkaline earth metal halide, a zinc halide or an aluminum halide. It is preferred to add an acid. Furthermore, carbon dioxide is preferably incorporated in the phenate.