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:
Dec. 24, 1991
Filed:
May. 29, 1990
Applicant:
Inventors:
Mutsuhiko Takeda, Tokyo, JP;
Isao Hagiwara, Tokyo, JP;
Fumiya Zaima, Tokyo, JP;
Shuzabu Sakaguchi, Tokyo, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556428 ; 558 20 ; 558 23 ; 558271 ;
Abstract
Disclosed is process for producing a sulfonium compound of the general formula (III), comprising reacting alkylthiophenol derivative of the general formula (I) and dialkyl sulfate of the general formula (II) in the presence of at least one inorganic compound selected from the group consisting of alkali metal carbonate, alkali metal hydrogencarbonate, alkaline earth metal hydroxide, alkaline earth metal carbonate, and oxides of Group II metals of the Periodic Table. ##STR1## wherein all the symbols are as defined in the appended claims.