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. 12, 1994
Filed:
Sep. 14, 1992
Applicant:
Inventors:
Karl Z Steigleder, Glen Ellyn, IL (US);
Christine M Conway, Rogers Park, IL (US);
David M Baldwin, Bolingbrook, IL (US);
Diane C Dierking, Orland Park, IL (US);
Assignee:
UOP, Des Plaines, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
554 98 ; 554 89 ; 554 97 ; 252553 ; 252556 ; 252558 ; 562 79 ; 562 82 ; 562 88 ; 562 91 ; 562 94 ; 562 95 ; 562 99 ; 568631 ; 568632 ; 568658 ; 568731 ; 568732 ; 568734 ; 568736 ; 568766 ; 568780 ; 568781 ; 568785 ; 568790 ; 585455 ; 585456 ;
Abstract
Silica-aluminas having a sodium content less than about 0.1 weight percent show increased stability when used as a catalyst for the alkylation of aromatic compounds. Where such silica-aluminas are used as the catalyst in detergent alkylation their increased stability permits continuous alkylation to be performed at lower temperatures, as a result of which the detergent alkylate product shows an incrementally higher linearity. Fluorided silica-aluminas having a sodium content of under 0.05 weight percent are particularly advantageous.