Azo dyes with an acetalized diazo component of the thiophene or thiazole series

US5466790A · kind A · utility

Assignee

• BASF SE

Inventors

• Sabine Gruettner-Merten · Mutterstadt, DE
• Helmut Reichelt · Neustadt, DE
• Arno Lange · Bad Dürkheim, DE
• Helmut Degen · Bischofswerda, DE

Key dates

• Filing date: Sep 30, 1994
• Grant date: Nov 14, 1995
• Expiry date: Sep 30, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/0085
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Azo dyes of the formula ##STR1## where L.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl or phenyl, PA1 L.sup.2 and L.sup.3 are each substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl, or together a radical of the formula ##STR2## where n is 0, 1 or 2, Y.sup.1 and Y.sup.4 are hydrogen, hydroxymethyl, 1,2-dihydroxyethyl or a radical of the formula COO.sym.M.sup..crclbar. or SO.sub.3.sup..crclbar. M.sup..sym., Y.sup.2 and Y.sup.3 are halogen or hydroxymethyl, and M.sup..sym. is the equivalent of a cation, PA1 L.sup.4 is hydrogen, substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl, substituted or unsubstituted phenyl, halogen, C.sub.1 -C.sub.8 -alkoxy, substituted or unsubstituted phenoxy, C.sub.1 -C.sub.8 -alkylthio, C.sub.1 -C.sub.8 -alkylsulfonyl, substituted or unsubstituted phenylthio, substituted or unsubstituted phenylsulfonyl, C.sub.1 -C.sub.8 -alkoxycarbonyl, C.sub.3 -C.sub.6 -alkenyloxycarbonyl or phenoxycarbonyl, PA1 X is nitrogen or the radical C--L.sup.5, where L.sup.5 is as defined in the specification, PA1 K is the radical of a coupling component, and novel crystal forms of thienylazobenzene dyes are useful for dyeing or printing textile materials.