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:
Nov. 06, 1990
Filed:
Jul. 12, 1988
Morimasa Kuragano, Sakai, JP;
Kozo Iwasaki, Yokohama, JP;
Yoshio Koyama, Takaishi, JP;
Takeshi Isobe, Takaishi, JP;
Hirozo Segawa, Niigata, JP;
Katsuji Yoguchi, Niigata, JP;
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Kyowa Gas Chemical Industry Company, Ltd., Tokyo, JP;
Abstract
This invention provides a method for the prevention of oxidation of resulting methacrolein immediately after its discharge from a reaction tube upon production of the methacrolein by vapor-phase oxidation of isobutylene, tertiary butanol or methallyl alcohol with a molecular-oxygen-containing gas in the presence of a catalyst. An inert gas and/or recirculated reaction gas or a mixed gas of an inert gas and/or recirculated reaction gas and air is fed and mixed with a reaction product gas immediately after an outlet of the reaction tube.