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. 25, 1980
Filed:
May. 04, 1978
Walter Birke, Frankfurt am Main, DE;
Hans-Ulrich von der Eltz, Frankfurt am Main, DE;
Franz Schon, Frankfurt am Main, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
In the process for the pad-dyeing or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, whereat in known manner the said materials are padded or printed with an aqueous liquor or printing paste of disperse dyestuffs, and subsequently the dyestuffs are fixed by means of liquid or gaseous methylene chloride or of both of the said phases of methylene chloride, the improvement that a dyestuff of the formula ##STR1## in which R.sub.1 represents hydrogen, chlorine, bromine or cyano, R.sub.2 represents hydrogen, chlorine or alkyl of 1 to 3 carbon atoms and R.sub.3 stands for alkyl of 1 to 5 carbon atoms, ##STR2## is applied.