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. 18, 2006
Filed:
Jan. 29, 2001
Applicants:
Adriana DE Stefanis, Monterotondo, IT;
Giorgio Perez, Rome, IT;
Anthony Tomlinson, Monterotondo, IT;
Christer Bergst{umlaut Over (R)}öm, Espoo, FI;
Inventors:
Adriana De Stefanis, Monterotondo, IT;
Giorgio Perez, Rome, IT;
Anthony Tomlinson, Monterotondo, IT;
Christer Bergst{umlaut over (r)}öm, Espoo, FI;
Assignee:
Optatech Corporation, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/64 (2006.01); C07C 2/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A side-chain of a substituted aromatic compound is alkylated by reacting the aromatic compound with an alkylating agent in the presence of a catalyst. The catalyst comprises a restructured smectite clay to which basic ions are incorporated by ion-exchange. The restructuring of the smectite clay is carried out by acid-treating the clay prior to ion-exchange.