Distyrylbiphenyls

US4339393A · 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 4, 1980
• Grant date: Jul 13, 1982
• Expiry date: Apr 4, 2000

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 X' 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.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.s…