Distyrylbenzene fluorescent brightening agents

US4314820A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Kurt Weber · Elgg, CH
• Hans R. Meyer · Binningen, CH

Key dates

• Filing date: Apr 2, 1980
• Grant date: Feb 9, 1982
• Expiry date: Apr 2, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06L4/629
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The distyrylbenzenes of the formula ##STR1## in which X and X' independently of one another are --COO-- or --CON(R.sub.4)-- in the o-position, a direct bond, oxygen, sulfur, --O--C.sub.1-3 --alkylene--CON(R.sub.4)--, --SO.sub.2 N(R.sub.4)--, --O--C.sub.1-3 -alkylene--COO-- or --OCO--, Y and Y' independently of one another are C.sub.1-20 -alkylene, R.sub.1 and R.sub.1 ' independently of one another are unsubstituted or substituted C.sub.1-8 -alkyl or C.sub.3-4 -alkenyl, or R.sub.1 together with R.sub.2, or R.sub.1 ' together with R.sub.2 ', is a heterocyclic ring, R.sub.2 and R.sub.2 ' independently of one another are unsubstituted or substituted C.sub.1-8 -alkyl or C.sub.3-4 -alkenyl, or R.sub.2 together with R.sub.1, or R.sub.2 ' together with R.sub.1 ', is a heterocyclic ring, or R.sub.1 and R.sub.2, or R.sub.1 ' and R.sub.2 ', together with R.sub.3 are a pyridine or picoline ring, R.sub.3 is hydrogen, unsubstituted or substituted C.sub.1-4 -alkyl or C.sub.3-4 -alkenyl, or together with R.sub.1 and R.sub.2 or with R.sub.1 ' and R.sub.2 ' is a pyridine or picoline ring, R.sub.4 is hydrogen or unsubstituted or substituted C.sub.1-16 -alkyl, A.sup..crclbar. is a colorless anion and …