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:
Apr. 17, 1990
Filed:
Jul. 20, 1988
Applicant:
Inventors:
Hossein Sharifian, Austin, TX (US);
Alan R Tanner, Austin, TX (US);
Assignee:
Southwestern Analytical Chemicals, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 72 ; 204 / ; 204102 ; 204130 ; 204250 ; 204251 ; 204292 ; 204293 ;
Abstract
A process is described for preparing quaternary ammonium hydroxides of improved purity. In one embodiment, the present invention relates to a process of preparing quaternary ammonium hydroxides from the corresponding quaternary ammonium salts in an electrolytic cell which comprises an anolyte compartment containing an anode and a catholyte compartment containing a cathode and water, said anolyte and catholyte compartments being separated from each other by a cation-exchange membrane, said process comprising the steps of