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:
Nov. 28, 1995
Filed:
Nov. 18, 1993
Bruno Delfort, Paris, FR;
Bertrand Daoudal, Pontigny, FR;
Jacques Lallement, Aubervilliers, FR;
Maurice Born, Nanterre, FR;
Jean-Claude Hipeaux, Colombes, FR;
Pierre Marchand, Orgeval, FR;
Francoise Dixmier, Sceaux, FR;
Monique Prigent, Saint Germain En Laye, FR;
Institut Francais Du Petrole, Rueil Malmaison, FR;
Abstract
Colloidal products according to the invention are obtained by a method comprising a step (a) providing a colloidal product containing at least one alkaline earth metal carbonate in micelle form, optionally reacted with at least one compound selected from alkylsulphonic acids and alkylarylsulphonic acids and salts thereof and long chain aliphatic carboxylic acids and salts thereof such as to modify a proportion of up to 70% of the basicity reserve of the original colloidal product and a step (b) in which the residual basicity reserve is neutralized by at least one acid containing at least one element selected from boron, phosphorus and sulphur. These colloidal products can be used as wear resistance and extreme pressure additives in lubricants.