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:
Dec. 12, 1995
Filed:
Jun. 27, 1994
Tse-Chong Wu, Baton Rouge, LA (US);
Albermarle Corporation, Richmond, VA (US);
Abstract
An improvement in a process for the haloalkylation of a first aromatic compound having at least one free ring position with a haloalkylating reagent and in the presence of a haloalkylation catalyst, said process producing a haloalkylated first aromatic compound and a dimeric reaction by-product of said first aromatic compound having at least one free ring position, the improvement comprising treating said by-product with a second aromatic compound having at least one free ring position the same or different than said first aromatic compound in the presence of a catalytically effective amount of an acid for a time and at a temperature sufficient to cleave said diarylalkane by-product and produce thereby said first aromatic compound having at least one free ring position.