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. 18, 1980
Filed:
Jul. 08, 1975
Claude M Brouard, Sotteville les Rouen, FR;
Jean-Pierre H Stiot, Saint Pierre les Elbeuf, FR;
Abstract
Azo dyestuffs, insoluble in water, are represented by the formula: ##STR1## wherein A represents the residue of a diazotizable benzene component carrying at least two substituents or the residue of a diazotizable heterocyclic component, R represents alkyl, B represents an unsubstituted or substituted alkyl group, and X represents hydrogen, chlorine, bromine, acylamino, benzoylamino, alkoxycarbonylamino, phenoxycarbonylamino, alkylsulfonylamino or phenylsulfonylamino, the dyestuff molecule being free of groups causing water solubility by formation of ions. These dyestuffs can be used for dyeing of hydrophobic fibers, in particular polyester fibers. Affinity is excellent and there are obtained bright, full-bodied shades very fast to wet tests, sublimation, abrasion and light.