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:
Jan. 10, 1978
Filed:
Dec. 01, 1975
Visvanathan Ramanathan, Basel, CH;
Ulrich Schlesinger, Maulburg, Baden, DT;
Rene De Montmollin, Riehen, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
An azo dyestuff of the formula ##STR1## wherein two of the radicals Z denote groups of the formula --NR'R' and one radical Z denotes a group of the formulae --NR'R', --OR' or --S-R', and R' and R' and R' each denote hydrogen, aryl, aralkyl, cycloalkyl or an aliphatic radical and R' and R' can form a ring containing the amine nitrogen and the radicals --NR'R' can be identical to, or different from, one another, Z.sub.3 is also a hydrogen, chlorine or bromine atom or an optionally substituted hydrocarbon radical and D is the radical of an aromatic or heterocyclic diazo component. The new dyestuffs dye synthetic fibers, such as polyester and acrylic fibers in fast yellow, and red shades.