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:
Mar. 21, 1989
Filed:
Dec. 19, 1986
Applicant:
Inventors:
Michio Ueshima, Takarazuka, JP;
Yoshiyuki Takahashi, Suita, JP;
Masatoshi Tsuchino, Yokohama, JP;
Noboru Saito, Takatsuki, JP;
Assignee:
Nippon Shokubai Kagaku Kogyo, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568432 ;
Abstract
A method for the production of p-methoxybenzaldehyde by the vapor-phase catalytic oxidation of p-methoxytoluene, which method comprises cooling and condensing a mixed gas formed by said reaction of oxidation thereby preparing a solution containing p-methoxybenzaldehyde, treating said solution in the presence of at least one alkali selected from the group consisting of an alkali metal compound and an ammonium compound soluble in water and alkaline in nature, and subsequently distilling the resultant treated solution.