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:
Dec. 13, 1977
Filed:
Jun. 01, 1976
Walter Deucker, Neuenhain, Taunus, DT;
Rudolf Lowenfeld, Buchschlag, DT;
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
Process for the dyeing and printing of synthetic fibrous materials, wherein the said fibrous materials are treated with an aqueous dispersion, an aqueous padding liquor or with a solution in an organic solvent of at least one dyestuff of the formula ##STR1## in which R.sub.1 represents hydrogen, chlorine, lower alkyl or --NH--CO-lower alkyl, R.sub.2 represents hydrogen, lower alkyl or lower alkoxy, R.sub.3 represents lower alkyl, lower alkylene-OH, lower alkylene-CN, --CH.sub.2 --CBr.dbd.CH.sub.2, ##STR2## or lower alkylene-COO-lower alkyl, R.sub.4 represents hydrogen, bromine or lower alkyl, and R.sub.5 represents hydrogen, lower alkyl or phenyl, this process yielding violet to bluish-green, preferably reddish to greenish dark blue dyeings and prints of high tinctorial strength and excellent fastness properties on the said fibrous materials, such as fibers of linear polyesters, cellulose esters and polyamides.