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:
Feb. 26, 2002
Filed:
Apr. 19, 2000
Hideyuki Dohi, Yokohama, JP;
Shozo Hayashi, Yokohama, JP;
Nippon Petrochemicals Company, Limited, Tokyo, JP;
Abstract
A method for producing an aromatic compound styrenic compound adduct comprising the steps of: (1) reacting an aromatic compound and a styrenic compound in a first reactor of fixed-bed flow type in a liquid phase in the presence of a solid acid catalyst, (2) circulating a part of the reaction mixture from the above step to the first reactor (3) feeding a reaction mixture flowing out from the first reactor to a second reactor thereby reducing the content of unsaturated components with the aid of a solid acid catalyst, and (4) distilling the resultant reaction mixture, to thereby obtain a fraction having a reduced content of unsaturated components. The method can be used for producing an aromatic compound/styrenic compound adduct having a reduced content of unsaturated components in high yield and at a low cost.