Distyrylbiphenyls

US4468352A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

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

Key dates

• Filing date: Apr 28, 1982
• Grant date: Aug 28, 1984
• Expiry date: Apr 28, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B23/148
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The distyrylbiphenyls of the formula ##STR1## in which X and X' independently of one another are a direct bond, oxygen, sulfur, --O--C.sub.1-3 -alkylene-CON(R.sub.4)----CON(R.sub.4)--, --O--C.sub.1-3 -alkylene-COO--, OCO or --COO--, with the proviso that if n+n'=O, X and Y' may not be --CON(R.sub.4)-- or O--C.sub.1-3 -alkylene-CON(R.sub.4)--, and if n+n'=2 and X and X' are --CON(R.sub.4)-- or --COO--, A.sup..crclbar. may not be a phosphite or phosphonate anion, and 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…