Abstract:
The present invention relates to o,p-dialkoxy-phenyl-azometal complex dyes and their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs an o,p-dialkoxy-phenyl-azometal complex dye in the optical layer.
Abstract:
The present invention relates to indandione based azo metal complex dyes and their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs an indandione based azo metal complex dye in the optical layer.
Abstract:
The invention relates to a thermoplastic fluorescent pigment obtained by the condensation of a diisocyanate prepolymer and an aliphatic diamine, a cycloaliphatic diamine or a mixture of a diamine and a polyol in the presence of a fluorescent dye, wherein the prepolymer is obtained by the reaction of an aromatic sulfonamide with an excess of aliphatic, cycloaliphatic and/or or aromatic diisocyanate, and wherein the molar excess of diisocyanate in the prepolymer equals the molar amount of the aliphatic diamine, the cycloaliphatic diamine or the mixture of a diamine and polyol present in the condensation suspension.
Abstract:
This invention relates to copolymer compositions having pigment like properties, comprising a fluorescent or non-fluorescent dye attached to a polymer chain by a spacer.The invention also provides for new mono- and difunctional dye monomers comprising a polymerizable group attached to a dye moiety by a spacer.The polymer pigments provide excellent properties, especially high temperature stability and easy applicability as colorant in different standard polymers.
Abstract:
The invention relates to the use of dyestuff salts of indolinium diazamethine type cations with azo metal complex anions based on pyridinones in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs dyestuff salts of indolinium diazamethine type cations with azo metal complex anions based on pyridinones in the optical layer.
Abstract:
The present invention relates to specific pentamethine cyanine azo complex dye compounds and their use as dyes in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength from 630 to 670 nm. The invention further relates to an optical layer comprising said dyes and to a write only read many (WORM) type optical recording medium capable of recording and reproducing information with radiation of a red laser, which employs said pentamethine cyanine azo complex type dye in the optical layer.
Abstract:
The present invention relates to cationic antipyrine based azo metal complex dyes for use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength from 380 to 650 nm. The invention further relates to an optical data recording medium capable of recording and reproducing information by laser beam irradiation. Particularly, it relates to a heat mode type optical data recording medium, which employs a cationic antipyrine based azo metal complex dye in the optical layer.
Abstract:
The invention relates to a two-stage process for making monodisperse, spherical, controlled-size, micrometer polymer particles from dispersion polymerization compositions, wherein the obtained particles have a diameter from 1 to 10 mm. In one preferred embodiment, the particles are crosslinked. In another preferred embodiment, the obtained particles comprise a dye, preferably a 330-380 nm absorbing dye attached to the polymer. In a more preferred embodiment, the particles are crosslinked and dyed and have pigment-like properties. The polymer particles provide excellent properties, especially high temperature stability and easy applicability as 330-380 nm absorbing pigments in different standard polymers.
Abstract:
This invention relates to copolymer compositions having pigment like properties, comprising a fluorescent or non-fluorescent dye attached to a polymer chain by a spacer having a chain length of C3 or longer.The invention also provides for new mono- and difunctional dye monomers comprising a polymerizable group attached to a dye moiety by a spacer of a chain length of C3 or longer.The polymer pigments provide excellent properties, especially high temperature stability and easy applicability as colorant in different standard polymers.
Abstract:
The invention relates to the use of dyestuff salts of indolinium diazamethine type cations with azo metal complex anions based on pyridinones in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs dyestuff salts of indolinium diazamethine type cations with azo metal complex anions based on pyridinones in the optical layer.