Bayer Aktiengesellschaft

Other

Karin Hassenr&uuml;ck

Horst Berneth

Friedrich-Karl Bruder

Serguei Kostromine

Rainer Hagen

Rafael Oser

Josef-Walter Stawitz

Thomas Bieringer

Wilfried Haese

Thomas Sommermann

Peter Landenberger

Fritz Puchner

Rolf Richter

Roger Nyssen

Dirk Pf&uuml;tzenreuter

Optical data carrier comprising a preferably transparent substrate which may, if desired, have previously been coated with one or more reflection layers and to whose surface a light-writeable information layer, if desired one or more reflection layers and if desired a protective layer or a further substrate or a covering layer have been applied, which can be written on or read by means of blue, red or infrared light, preferably laser light, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that at least one cyanine dye is used as light-absorbent compound.

Optical data carrier comprising a cyanine dye as light-absorbent compound in the information layer

Optical data carrier comprising a preferably transparent substrate which may, if desired, have previously been coated with one or more reflection layers and to whose surface a light-writeable information layer, if desired one or more reflection layers and if desired a protective layer or a further substrate or a covering layer have been applied, which can be written on and read by means of infrared light, preferably laser light, particularly preferably light having a wavelength in the range 750-800 nm, in particular 770-790 nm, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that at least one cobalt(III) phthalocyanine in which the Co metal centre bears two axial substituents R and R which represent, independently of one another, CN, SCN, alkoxy or alkylthio is used as light-absorbent compound.

Optical data store comprising an axially substituted cobalt phthalocyanine in the light-writeable information layer

An optical data storage medium containing a preferably transparent substrate which has optionally already been coated with one or more reflecting layers and onto the surface of which a photorecordable information layer, optionally one or more reflecting layers, and optionally a protective layer or an additional substrate or a top layer are applied, which data storage medium can be recorded on and read using blue or red light, preferably laser light, wherein the information layer contains a light-absorbing compound and optionally a binder, characterized in that at least one diaza hemicyanine dye is used as the light-absorbing compound.

Optical data storage medium containing a diaza hemicyanine dye as the light-absorbing compound in the information layer

Optical data stores containing a Co-phthalocyanine complex in the information layer recordable using light

An optical data storage medium containing a preferably transparent substrate which has optionally already been coated with one or more reflecting layers and onto the surface of which a photorecordable information layer, optionally one or more reflecting layers, and optionally a protective layer or an additional substrate or a top layer are applied, which data storage medium can be recorded on and read using blue or red light, preferably laser light, wherein the information layer contains a light-absorbing compound and optionally a binder, characterized in that at least one triazacyanine dye is used as the light-absorbing compound.

Optical data storage medium containing a triazacyanine dye as the light-absorbing compound in the information layer

The invention relates to aqueous pigment preparation containing an ionic alkoxylated styrene-phenol condensate or a mixture thereof with a hydroxy-terminated alkoxylated styrene-phenol condensate.

Pigment preparations useful for ink-jet printing

Growing community of inventors

Düsseldorf, Germany

Karin Hassenrück

Growing community of inventors

Düsseldorf, Germany

Karin Hassenr&uuml;ck

Karin Hassenrück