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. 28, 1989
Filed:
Apr. 28, 1986
Applicant:
Inventors:
Enrico Pontoglio, Brescia, IT;
Sandro Parodi, Nuvolento, IT;
Giuseppe Ghielmetti, Milan, IT;
Liborio Casale, Brescia, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2605 / ; 260694 ;
Abstract
The invention relates to a process for the preparation of tetrachloroterephthaloyl dichloride by means of the chlorination of terephthaloyl dichloride with gaseous chlorine, characterized in that said chlorination is carried out in the vapor phase in the presence of activated charcoal as catalyst. The invention relates also to the synthesis processes in which the compound prepared according to the process said is used as an intermediate.