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:
Oct. 19, 1976
Filed:
Jul. 25, 1973
Applicant:
Inventors:
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09B / ; D06P / ;
U.S. Cl.
CPC ...
260205 ; 260155 ; 260156 ; 260157 ; 260158 ; 260163 ; 260174 ; 260184 ; 260186 ; 260187 ; 260206 ; 260207 ; 2602071 ; 260371 ; 260377 ; 260378 ; 2604 / ; 2604 / ; 2605 / ; 2605 / ;
Abstract
Transiently water-soluble dyestuffs of the formula ##EQU1## WHEREIN F is a radical of a non-heterocyclic azo disperse dyestuff containing no groups which dissociate in water, n is 1 or 2, X is an electrophilic group, R.sub.1 is an optionally substituted ethylene group, and R.sub.2 and R.sub.3 are alkyl radicals which are different from each other and which carry altogether at least one water-solubilizing group and optionally still further substituents which do not impart solubility in water and R.sub.3 can furthermore be a hydrogen atom. The dyestuffs can be dissolved in aqueous dyeing baths and dye polyester fibers in yellow, red and blue shades of good fastness.