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:
Oct. 26, 1993
Filed:
Oct. 23, 1991
Guy Parc, Rueil-Malmaison, FR;
Nicole Thevenin, Paris, FR;
Maurice Born, Nanterre, FR;
Jacques Lallement, Aubervilliers, FR;
Institut Francais Du Petrole, Rueil Malmaison, FR;
Abstract
A composition of a thiophosphoretted additive obtained by reacting a sodium or a calcium sulfonate surbasified by sodium or calcium carbonate, showing 0.9 to 10 basic equivalents per kilogram, with a phosphorus sulfide used in such proportion that he ratio of molar phosphorus to the basic equivalent of the surbasified sulfonate ranges from 0.002 to 0.15; and contacting resultant reaction product of the surbasified sulfonate and the phosphorus sulfide with at least one active hydrogen compound which is water, an alcohol, a phenol, a carboxylic acid, an ester-acid, a mineral acid, a mineral base, an amine, an amide or a mercaptan.