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:
Mar. 22, 1977
Filed:
Jun. 20, 1974
Jean-Pierre Henri Stiot, St. Pierre les Elbeuf, FR;
Jean-Marie Louis Leroy, St. Etienne du Rouvray, FR;
Claude Marie Brouard, Sotteville les Rouen, FR;
Produits Chimiques Ugine Kuhlmann, Paris, FR;
Abstract
Dyestuffs of the formula: ##STR1## in which R represents a methyl or ethyl group, R.sub.1 represents a substituted or unsubstituted alkyl group, R.sub.2 represents a hydrogen atom or a substituted or unsubstituted alkyl group, and the benzene nucleus A may be substituted, the molecule being free from groups causing solubility in water by the formation of ions; process for their preparation, process for the coloration of synthetic fibers by means of such dyestuffs, synthetic fibers colored by means of such dyestuffs and diazotizable amines of the formula: ##STR2## in which R represents a methyl or ethyl group.