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:
Aug. 27, 1996
Filed:
Aug. 16, 1994
Applicant:
Inventors:
Toshio Sato, Kashima-machi, JP;
Ikuo Ito, Kashima-machi, JP;
Kazuhiko Maeda, Kashima-machi, JP;
Keiichi Yokota, Kashima-machi, JP;
Takeshi Namekata, Kashima-machi, JP;
Akihiko Nemoto, Okegawa, JP;
Assignee:
Sumikin Chemical Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562467 ; 568632 ; 568659 ; 562412 ; 562413 ; 562415 ;
Abstract
Alkoxynaphthalenecarboxylic acid is produced by a process comprising the addition of 1,3-butadiene to alkoxyalkylbenzene to yield an adduct. The adduct is cyclized in the presence of an acid catalyst to alkoxyalkyltetralin. The tetralin derivative is then dehydrogenated to produce aloxyalkylnaphthalene, which is oxidized to alkoxynaphthalenecarboxylic acid.