OPTICAL BRIGHTENING AGENT

An optical brightener comprising one or more spiro compounds of the formula (I),whereK1 and K2, which are identical or different, are conjugated systems, and psi is C, Si, Ge, Sn or Pb, is notable for high fluorescence quantum yields and a high temperature stability.

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Bibliographic Details
Main Authors SALBECK, JOSEF, KREUDER, WILLI
Format Patent
LanguageEnglish
French
German
Published 26.05.2004
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ADHESIVES
ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
BASIC ELECTRIC ELEMENTS
BLEACHING LEATHER OR FURS
CANDLES
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DETERGENT COMPOSITIONS
DETERGENTS
DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FATTY ACIDS THEREFROM
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
HETEROCYCLIC COMPOUNDS
LAKES
LAUNDERING
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
RECOVERY OF GLYCEROL
RESIN SOAPS
SEMICONDUCTOR DEVICES
SOAP OR SOAP-MAKING
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OF TEXTILES OR THE LIKE
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
USE OF SINGLE SUBSTANCES AS DETERGENTS
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Summary:An optical brightener comprising one or more spiro compounds of the formula (I),whereK1 and K2, which are identical or different, are conjugated systems, and psi is C, Si, Ge, Sn or Pb, is notable for high fluorescence quantum yields and a high temperature stability.
Bibliography:Application Number: EP19970913175