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:
Jul. 29, 2003
Filed:
Sep. 18, 2000
Masatsugu Mikawa, Yokohama, JP;
Shin-ichi Uchida, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
It provide a catalyst for the production of epoxides by a vapor-phase oxidation of an unsaturated hydrocarbon having a chain length of 4-20 carbon atoms and containing no allylic hydrogen atom, characterized by having a catalytic component containing silver and at least one element selected from the group consisting of alkali metals and thallium deposited onto a carrier obtained by mixing &agr;-alumina having a sodium content in the range of 1-70 mmol (as reduced to Na) per kg of &agr;-alumina with an aluminium compound, a silicon compound, and a sodium compound and calcining the resultant mixture, the carrier having a silicon content (as reduced to SiO ) in the range of 0.3 -11.5 mass % based on the mass of the carrier and a sodium content (as reduced to Na O) in the range of 0.11-2.5 mass % based on the mass of the carrier.