Distyryl compounds

US4317782A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Udo Eckstein · Cologne, DE
• Edgar Siegel · Leverkusen, DE

Key dates

• Filing date: Feb 22, 1979
• Grant date: Mar 2, 1982
• Expiry date: Feb 22, 1999

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/213
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Distyryl compounds of the formula ##STR1## wherein A denotes 1,4-phenylene, 4,4'-biphenylylene, 4,4"-terphenylylene, 1,4-, 1,5- or 2,6-naphthylene, 9,10-dihydro-2,7-phenanthrenylene or 2,7-dibenzofuranylene, PA1 R.sup.1 denotes an optionally functionally modified phosphonic acid, phosphonyl or phosphinyl group, PA1 R.sup.2 denotes hydrogen, an optionally functionally modified phosphonic acid, phosphonyl or phosphinyl group, sulpho, carboxyl, alkoxycarbonyl, aryloxycarbonyl, aralkoxycarbonyl, aminocarbonyl, cyano, halogen, alkyl, aralkyl, alkenyl, hydroxyl, alkoxy, aralkoxy, cycloalkoxy, aryloxy or alkylmercapto and PA1 R.sup.3 and R.sup.4 denote hydrogen, halogen, alkyl, alkenyl, aryl, aralkyl, alkoxy, alkoxycarbonyl, aminocarbonyl, cyano, sulpho, aminosulphonyl, acyl, acylamino, hydroxyl, aryloxy, aralkoxy, alkenyloxy, carboxyl or acyloxy and wherein PA1 the cyclic and acyclic radicals can contain non-chromophoric substituents, processes for the preparation of these compounds and their use for whitening synthetic, semi-synthetic and natural organic, high-molecular materials and for the production of laser radiation.