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:
Apr. 15, 1980
Filed:
Sep. 27, 1978
Applicant:
Inventors:
Kazunori Takahata, Ichihara, JP;
Hiroshi Hasui, Tokyo, JP;
Assignee:
Mitsui Petrochemical Industries Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585406 ; 252 / ; 252 73 ; 585400 ; 585404 ; 585410 ; 585415 ; 585476 ;
Abstract
A process for producing a linear unsaturated dimer of .alpha.-alkyl styrenes by heating .alpha.-alkyl styrenes in the presence of a silica-alumina catalyst, said catalyst consisting of alumina and silica in a weight ratio of 83/17.ltoreq.Al.sub.2 O.sub.3 /SiO.sub.2 .ltoreq.96/4 and being substantially free of alkali is disclosed.
Takahata, Kazunori. (1980). Process for producing linear unsaturated dimers of .alpha.-alkyl styrenes (U.S. Patent No. 4198535). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4198535
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile