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. 13, 2002
Filed:
Jan. 27, 2000
Makoto Tezuka, Fukuoka, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
This invention relates to a method for regenerating a cyclic olefin hydration catalyst, in which a solid acid catalyst is regenerated after its use in a hydration reaction of a cyclic olefin by mixing a water phase containing the solid acid catalyst and an oil phase containing the cyclic olefin and thereby effecting the reaction, which comprises separating the reaction solution into oil phase and water phase at a temperature of 40° C. or more and subsequently subjecting at least a portion of the solid acid catalyst in the separated water phase to a regeneration treatment. According to the method of this invention, a catalyst used in the hydration of a cyclic olefin can be separated and regenerated efficiently, and it is a particularly suitable catalyst regeneration method for a case in which hydration of a cyclic olefin is carried out for a prolonged period of time by repeating regeneration and use of the catalyst again and again.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile