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:
Jun. 13, 1989
Filed:
Oct. 16, 1987
Maurice Born, Nanterre, FR;
Lucienne Briquet, Rueil Malmaison, FR;
Jacques Lallement, Aubervilliers, FR;
Guy Parc, Rueil Malmaison, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
Compositions of olefin polysulfides having an increased solubility in mineral oils and in synthetic oils, particularly of the hydrogenated polyalphaolefin (P.A.O.) type, are disclosed. They are prepared more particularly by reacting a sulfur monochloride with a monoolefin (e.g. isobutene) so as to form an addition product, called an adduct, which is then reacted with an alkali metal or ammonium polysulfide, obtained, for example, by reacting a mercaptan with an alkali hydroxide or ammonia in the presence of elemental sulfur. These compositions of olefin polysulfides can be used as extreme-pressure additives in gear-oils or in metal-working oils.