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. 31, 2012
Filed:
Jul. 16, 2009
Masateru Yasumura, Ibaraki, JP;
Yoshikazu Aoki, Fukushima, JP;
Masami Ito, Ibaraki, JP;
Masafumi Umekawa, Fukushima, JP;
Naohiro Tarumoto, Tokyo, JP;
Masateru Yasumura, Ibaraki, JP;
Yoshikazu Aoki, Fukushima, JP;
Masami Ito, Ibaraki, JP;
Masafumi Umekawa, Fukushima, JP;
Naohiro Tarumoto, Tokyo, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Abstract
A method for producing an oxidized cyclic phenol sulfide which comprises the step of oxidizing a cyclic phenol sulfide of the following formula (1) as a raw material: wherein R represents a straight or branched alkyl group having 1 to 6 carbon atoms, and m is an integer from 4 to 8,in a solvent(s) other than a halogenated hydrocarbon in an amount of 2 or more and less than 10 parts by weight per 1 part by weight of the cyclic phenol sulfide, with an oxidizing agent(s) to obtain an oxidized cyclic phenol sulfide of the following formula (2): wherein R represents a straight or branched alkyl group having 1 to 6 carbon atoms, m is an integer from 4 to 8, and n is 1 or 2.