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:
Sep. 30, 2014
Filed:
Oct. 21, 2009
Yuji Hagiwara, Kawagoe, JP;
Ryozo Takihana, Kawagoe, JP;
Masanori Fushimi, Kawagoe, JP;
Yoshimi Isono, Kawagoe, JP;
Satoru Narizuka, Saitama, JP;
Yuji Hagiwara, Kawagoe, JP;
Ryozo Takihana, Kawagoe, JP;
Masanori Fushimi, Kawagoe, JP;
Yoshimi Isono, Kawagoe, JP;
Satoru Narizuka, Saitama, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
In the present invention, a target alkoxycarbonylfluoroalkanesulfonic acid salt is obtained by using a halofluoroalkanoic acid ester as a starting raw material, sulfinating the halofluoroalkanoic acid ester in the presence of an amine (as a first step), and then, oxidizing the resulting sulfination product (as a second step). Further, an alkoxycarbonylfluoroalkanesulfinic acid onium salt, which is useful as a photoacid generator, is obtained by salt exchange reaction of the alkoxycarbonylfluoroalkanesulfonic acid salt.