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. 01, 1977
Filed:
Feb. 13, 1976
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A dyestuff of the formula ##STR1## WHEREIN X.sub.1 represents fluorine, bromine, chlorine or hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, phenyl, phenoxy, thiophenoxy or C.sub.1 -C.sub.4 -alkyl sulphonyl, C.sub.1 -C.sub.4 -alkylthio, each of which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkoxy, hydroxy, cyano, bromine, chlorine, carbo-C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylcarbonyloxy, chloro-C.sub.1 -C.sub.4 -alkylcarbonyloxy or C.sub.1 -C.sub.4 -alkoxy-carbonyloxy, fluorine, bromine, chlorine, COOR, in which R represents C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkyl substituted by C.sub.1 -C.sub.4 -alkoxy, hydroxy, cyano, C.sub.1 -C.sub.4 -alkylcarbonyloxy, chlorine or bromine, --SO.sub.2 NH--C.sub.1 -C.sub.4 -alkyl and ##STR2## (WHEREIN THE C.sub.1 -C.sub.4 -alkyl is unsubstituted or substituted by hydroxy, chlorine, bromine, C.sub.1 -C.sub.4 -alkoxy or phenyl),
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