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. 05, 1977
Filed:
Jun. 27, 1973
Applicant:
Inventors:
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2602 / ; 2602401 ; 2602409 ; 2602 / ; 2603 / ; 2603325 ; 8 1 / ;
Abstract
A novel process for the production of compounds of the formula ##STR1## wherein A and A.sub.1, independently of one another, denote phenyl, naphthyl, diphenylyl, 2-phenyl-1,2,3-triazol-4-yl or pyridyl, it being possible for A and A.sub.1 to contain non-chromophoric substituents, and D denotes 4,4'-diphenylylene,1,5- or 2,6-naphthylene, or a 9,10-dihydrophenanthrene or dibenzofurane radical which is bonded to the vinylene groups in the 2,7-position, which comprises reacting in a first stage a compound of the formula
Rempfler, Hermann. (1977). Process for the manufacture of compounds containing vinyl groups (U.S. Patent No. 4016203). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4016203
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile