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:
Nov. 28, 1995
Filed:
Sep. 30, 1994
Applicant:
Inventors:
Ramanathan Ravichandran, Nanuet, NY (US);
Ambelal R Patel, Scarsdale, NY (US);
Assignee:
Ciba-Geigy Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546190 ; 546188 ;
Abstract
The instant invention relates to novel hydrazine derivatives of formula III ##STR1## where R.sub.1 is hydrogen, oxyl, hydroxyl, alkyl, of 2 to 4 carbon atoms substituted by one hydroxyl group, allyl, benzyl, benzyl substituted by one of two alkyl of 1 to 4 carbon atoms or alkanoyl of 1 to 8 carbon atoms, and X is --O-- or --NR.sub.2 -- where R.sub.2 is hydrogen or alkyl. These compounds are useful as intermediates from which to prepare the corresponding azo compounds, which are useful for the stabilization of polymers, particularly unsaturated elastomers, by being grafted thereon.