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:
Jun. 19, 2012
Filed:
May. 25, 2006
Tatsuo Hamamatsu, Yokohama, JP;
Nobuhiro Kimura, Yokohama, JP;
Tsutomu Takashima, Yokohama, JP;
Takashi Morikita, Yokohama, JP;
Tatsuo Hamamatsu, Yokohama, JP;
Nobuhiro Kimura, Yokohama, JP;
Tsutomu Takashima, Yokohama, JP;
Takashi Morikita, Yokohama, JP;
Nippon Oil Corporation, Tokyo, JP;
Abstract
The invention provides a solid phosphoric acid catalyst which has high activity and attains high dimer selectivity in olefin dimerization reactions and efficient methods of olefin dimerization. The solid phosphoric acid catalyst comprises a carrier and phosphoric acid supported thereon. When the solid phosphoric acid catalyst is heated at 250° C. for 20 minutes, heating loss of water is 50 mass % or more based on diphosphorus pentoxide (PO) derived from the phosphoric acid. A method of olefin dimerization comprises bringing an olefin-containing feed material containing water in an amount of 10-1000 mass ppm into contact with the catalyst to initiate the reaction.