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:
Jun. 15, 1976
Filed:
Mar. 17, 1975
Applicant:
Inventors:
Reinhard Mohr, Offenbach am Main, DT;
Konrad Lohe, Rembrucken, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8168 / ; 8177 / ; 8168 / ; 8168 / ; 8 39 / ; 8 39 / ; 8 39 / ; 8 41 / ;
Abstract
Dyestuffs of the formula ##EQU1## IN WHICH Alk is lower alkyl and in which the phenyl nucleus may be further substituted by nonionic substituents and n is 2 to 6, are useful for dyeing polymers containing acidic groups. These dyestuffs yield stable compositions containing 20 to 40 % by weight of one or more of said dyestuffs, 20 to 40 % by weight of an organic solvent, by weight of an organic solvent, 20 to 40 % by weight of a nonionic dispersant of the alkylphenol polyglycolether or fat alcohol polyglycolether type and up to 20 % by weight of water.