Bisbenzoxazolyl stilbenes and their use as fluorescent brightening agents

The invention comprises a compound of formula in which R1 represents one or more substituntes which may be halogen atoms, alkyl, aryl, alkanyl, arylalkyl, alkoxy, aryloxy, acyl, acyloxy, hydroxyl, amino, substituted amino, quaternized ammonium, sulpho, substituted sulphonyl, sulphamyl, substituted...

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Bibliographische Detailangaben
Hauptverfasser:	SAUNDERS DAVID GEORGE, MIJOVIC MIROSLAV VASA, KNOTT EDWARD BOWES
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HETEROCYCLIC COMPOUNDS HOLOGRAPHY METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS SPINNING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	The invention comprises a compound of formula in which R1 represents one or more substituntes which may be halogen atoms, alkyl, aryl, alkanyl, arylalkyl, alkoxy, aryloxy, acyl, acyloxy, hydroxyl, amino, substituted amino, quaternized ammonium, sulpho, substituted sulphonyl, sulphamyl, substituted sulphamyl, cyano, thiocyano, thiol, carbamyl, substituted carbamyl, carbamyloxy or nitro groups, and Y and Y1 each represent a hydrogen atom, alkyl, aryl or cyano group which are fluorescent brightening agents and which are prepared by heating a 4,41-bis-(2-hydroxy-phenyl carbamoyl) stilbene at from 200 DEG to 400 DEG C. These compounds are prepared in turn by reacting a 4,41-stilbene dicarboxylic acid chloride with an o-aminophenol in the presence of a solvent. Examples describe the preparation of 4,41-bis-benzoxazol - 2 - yl) - stilbene, 4,41 - di - (benzoxazol - 2 - yl) - 2 - methylstilbene, 4,41 - di-(benzoxazol - 2 - yl) - a - cyanostilbene, 4,41-di-(benzoxazol - 2 - yl) - 2,21 - dimethylstilbene, 4,41 - di - (6 - methoxybenzoxazol - 2 - yl)-stilbene, 4,41 - di - (benzoxazol - 2 - yl) - 2-nitrostilbene, 4,41 - di - (benzoxazol - 2 - yl)-2 - aminostilbene, 4,41 - di - (benzoxazol - 2 - yl)-2 - hydroxystilbene, 4,41 - di - (benzoxazol - 2-yl)-2 - chlorostilbene, 4,41 - di - benzoxazol - 2 - yl)-2 - cyanostilbene, 4,41 - bis - (6 - chlorobenzoxazol - 2 - yl) - stilbene, 4,41 - bis - (6 - methylsulphonylbenzoxazol) - 2 - yl) - stilbene, 4,41-bis - (5 - cyanobenzoxazol - 2 - yl) - stilbene and many other compounds are specified.