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:
Aug. 17, 1976
Filed:
Feb. 21, 1975
Applicant:
Inventors:
Carlo Neri, San Donato Milanese, IT;
Emilio Perrotti, San Donato Milanese, IT;
Assignee:
Snam Progetti S.p.A., San Donato Milanese, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
Long chain alkyl sulphonates, adapted for use as detergents, are prepared by adding alkali metal bisulphite to a stoichiometric excess of alpha-olefines having from 10 to 20 carbon atoms, in a liquid solvent mixture of alcohol and water having a weight ratio in the range from 1.2 to 2.5, in the presence of oxygen and an oxide or salt of manganese at a temperature not in excess of the boiling point of the solvent mixture, and a pH in the range of 8.5 to 2, wherein the ratio of solvent to olefines is between 6/1 and 2/1.