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:
Aug. 30, 1977
Filed:
Dec. 01, 1975
Applicant:
Inventors:
Ugo Romano, Milan, IT;
Renato Tesei, San Donato Milanese, IT;
Assignee:
Anic, S.p.A., Palermo, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260463 ;
Abstract
The invention relates to a process for preparing diaryl carbonates starting from phenyl alkyl carbonates, the reaction being carried out in the presence of suitable catalysts capable of affording greater yields and selectivity; the catalyst system is selected amongst the Lewis acids or the compounds of transition metals.