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. 06, 1991
Filed:
Dec. 18, 1989
James F Ward, Fairfield, OH (US);
Randall S Matthews, Cincinnati, OH (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
The present invention is directed to a process for sulfating unsaturated alcohols using inexpensive reagents and mild reaction conditions. The process comprises reacting an unsaturated alcohol of the formula R--OH, wherein R is a C.sub.8 -C.sub.22 alkenyl group, with an ether sulfate of the formula R.sup.1 (OCH.sub.2 CH.sub.2).sub.n OSO.sub.3 M, wherein R.sup.1 is a C.sub.1 -C.sub.18 hydrocarbyl group, n is an integer from 1 to 10, and M is an alkali metal, to form an unsaturated sulfate; said reaction being carried out in the presence of a catlaytically effective amount of an acid catalyst. The mole ratio of unsaturated alcohol reactant to ether sulfate ranges from about 0.5:1 to about 2:1. In this process the sulfation occurs primarily at the hydroxyl group of the unsaturated alcohol, with minimal sulfation at the olefinic moiety of said alcohol.