Triphenylmethane dyes

US4223144A · kind A · utility

Assignee

• BASF SE

Inventors

• Hellmut Kast
• Klaus Grychtol · Bad Dürkheim, DE
• Franz Feichtmayr

Key dates

• Filing date: Sep 5, 1978
• Grant date: Sep 16, 1980
• Expiry date: Sep 5, 1998

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the general formula I ##STR1## where B is a bridge member, PA1 the radicals R independently of one another are hydrogen or substituted or unsubstituted alkyl, or two radicals R together with the nitrogen are a heterocyclic saturated 5-membered or 6-membered ring, PA1 the radicals R.sup.1 independently of one another are hydrogen or C.sub.1 -C.sub.4 -alkyl, PA1 the radicals R.sup.2 independently of one another are hydrogen, C.sub.1 -C.sub.4 -alkyl or halogen, the radicals R.sup.3 independently of one another are hydrogen or substituted or unsubstituted alkyl or together are an alkylene group, and X.crclbar. is an anion. The compounds of the formula I are particularly suitable for dyeing paper.