Process for the dyeing of synthetic fibrous material from organic solvents

US3930791A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Birke · Frankfurt am Main, DE
• Franz Schon · Frankfurt am Main, DE
• Willi Steckelberg · Hofheim, DE

Key dates

• Filing date: Nov 1, 1973
• Grant date: Jan 6, 1976
• Expiry date: Nov 1, 1993

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/928
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process for the continuous dyeing of textile materials consisting of, or containing, synthetic fibrous materials of the group consisting of high molecular polyamides, polyolefins, polyacrylonitriles, polyurethanes, polyvinylchlorides, polyvinylacetates, cellulose-21/2-acetate, cellulose-triacetate and high molecular polyesters, which comprises impregnating the said fibrous materials with an organic dyebath containing at least one dyestuff of the formula ##SPC1## In which R represents a linear or branched alkylcarbonyl radical of at most 20 carbon atoms or the naphthoyl group being unsubstituted or substituted on the naphthalene nucteus by lower alkyl, X represents an oxygen or sulfuratom, Y represents hydrogen, chlorine or bromine, A represents a linear or branched alkylene groups of 1 to 4 carbon atoms unsubstituted or substituted by methoxy, ethoxy, phenoxy or R being defined as above, and B represents (1) phenyl unsubstituted or substituted by fluorine chlorine, bromine, alkyl or 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, trifluoromethyl, cyano, carboalkoxy, nitro, acetyl, benzoyl, phenoxy or phenyl, or (2) naphthyl, and heating the impregnated and heated fibrous mate…