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, 1978
Filed:
Sep. 20, 1976
Gerard Emile Coispeau, Soisy-sous-Montmorency, FR;
Produits Chimiques Ugine Kuhlmann, Paris, FR;
Abstract
Azopyrazolium dyes of the formula: ##STR1## in which R.sub.1 represents an alkyl group or a phenyl group which may be substituted with a halogen atom or with a nitro, alkoxy or alkyl group, R.sub.2 represents an alkyl group; R.sub.3 represents an atom of hydrogen or halogen; R.sub.4 represents the residue of a coupler R.sub.4 H free of a sulfonic or carboxylic group; and X.sup.- represents a monovalent anion, and 3-trifluoromethyl-4-aryl-5-amino pyrazoles of the formula in which R.sub.3 and R.sub.4 have the same meanings as above and R'.sub.1 represents a hydrogen atom, an alkyl group, or a phenyl group which may be substituted with a halogen atom or with a nitro, alkoxy or alkyl group, are disclosed; methods are disclosed for making these compounds and using them for the dyeing of fibers based on polymers and copolymers of acrylonitrile or on acid-modified polyesters or polyamides to pure and brilliant shades having good fastness, especially fastness to light, e.g., for using the pyrazoles to form the dyes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile