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:
Jul. 18, 2000
Filed:
Feb. 10, 1998
Roger Lacroix, Village-Neuf, FR;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Dye mixtures which contain a dye of the formula ##STR1## together with a dye of the formula ##STR2## in which M.sup.+ in the dyes of the formulae (1) and (2) are ammonium cations ##STR3## which are identical to or different from one another, of an amine of the formula ##STR4## where R.sub.1 and R.sub.2 independently of one another are hydrogen, C.sub.1 --C.sub.6 alkyl or C.sub.2 --C.sub.6 alkyl substituted by hydroxyl or amino and, if appropriate, interrupted by an oxygen atom, and R.sub.3 is C.sub.2 --C.sub.6 alkyl substituted by hydroxyl or amino and, if appropriate, interrupted by an oxygen atom, afford dyeings having good fastnesses on nitrogen-containing or hydroxyl group-containing fibre materials.