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:
Jul. 01, 1991
Filed:
Oct. 29, 1989
Applicant:
Inventors:
H Hunter Paalman, Walnut Creek, CA (US);
Jonathan A Okorley, Pittsburg, CA (US);
James A Sinclair, Midland, MI (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07C / ;
U.S. Cl.
CPC ...
544263 ; 568851 ;
Abstract
The concentration of alkali metal hydroxide contaminants in solutions of alkali metal alkoxides in alcohols is reduced to below about 0.1 percent by adding an alkyl alkanoate ester. For example, a solution of sodium methoxide in methanol containing about 0.04 percent sodium hydroxide was obtained by adding a small amount of methyl acetate. The alkali metal alkanoate salt formed as a by-product does not deleteriously affect most uses of such solutions.