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. 04, 1990
Filed:
Jul. 10, 1989
Applicant:
Inventors:
Tadashi Abe, Niihama, JP;
Mitsuyoshi Manabe, Niihama, JP;
Koji Deguchi, Ibo, JP;
Hiroyuki Uhara, Tatsuno, JP;
Yukio Aoki, Ibo, JP;
Assignees:
Sumitomo Chemical Company, Ltd., Osaka, JP;
Nippon Shokubai Kagaku Kogyo Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; B01J / ; B01J / ; B01J / ; B01J / ; C10G / ;
U.S. Cl.
CPC ...
562534 ; 502-2 ; 422188 ;
Abstract
This invention relates to a improved method for the production of methacrylic acid by the steps of subjecting isobutylene and/or tertiory hutanol to catalytic vapor-phase oxidation with molecular oxygen in a first reactor, then supplying the resultant gax mixture to a second reactor, a rodlike or plate like insert set being placed in the empty space of gas inlet part of the tube of said second reactor.