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:
Apr. 20, 1976
Filed:
Oct. 23, 1973
Walter Birke, Frankfurt am Main, DT;
Rudolf Schickfluss, Frankfurt am Main, DT;
Franz Schon, Frankfurt am Main, DT;
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
A process for the continuous dyeing of synthetic fibrous materials from organic solvents, which comprises impregnating the said fibrous materials with organic dyebaths containing at least one dyestuff of the formula (1) ##SPC1## In which R represents a secondary or tertiary amino group of the formula (2) ##EQU1## in which R.sub.4, R.sub.5 each represents, straight chain or branched alkyl, hydroxyalkyl, lower alkyl --COO-- lower alkylene, and R.sub.4 additionally represents hydrogen lower alkyl --o-- lower alkylene, or R.sub.4 and R.sub.5 represent together with the nitrogen atom the heterocyclic ring ##EQU2## R.sub.1 and R.sub.1 ' each represents hydrogen, chlorine, bromine, lower alkyl, lower alkoxy, nitro or --SO.sub.2 -- lower alkyl, R.sub.2 and R.sub.3 each represents hydrogen, lower alkyl, cyano-lower alkylene, hydroxy- lower alkylene, lower alkylene ##EQU3## lower alkyl, lower alkylene LOWER ALKYL, ##EQU4## lower alkylene-phenyl or phenyl, X represents hydrogen, chlorine, bromine, lower alkyl or lower alkoxy, Y represents hydrogen, chlorine, bromine, lower alkyl, lower alkoxy or acylamino, and subsequently fixing the applied dyestuffs by a heat treatment.