摘要:
The present invention relates to a process for the production of cyanine dyes with their methine chain showing group (M) and the charge compensation occuring by linked end groups through transformation of cationic cyanine dyes comprising group (D) with CH-acid compounds of the following formula (I) B.sub.1 --CH.sub.2 --B.sub.2 in an inert solvent, the substituents having the significance given in the description. ##STR1##
摘要:
The present invention relates to an infra-red laser sensitive thermographic material and to a process for forming a heat mode image using such a material.
摘要:
The invention relates to a process for preparing alkoxy-substituted, metal-containing phthalocyanines of the formula (I) where R is substituted or unsubstituted alkyl or cycloalkyl, M is a divalent metal atom, metaloxy or a trivalent or tetravalent substituted metal atom, characterized in that the phthalonitrile of the formula (II) is reacted in the presence of a metal salt and a base in a water-miscible solvent.
摘要:
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 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 azo metal dye is used as light-absorbent compound.
摘要:
Optical data carriers having at least one information layer which comprises a polymeric network comprising covalently bound light-absorbent compounds.
摘要:
Optical data carriers whose information layer comprises at least one light-absorbent compound which is a Co(III) phthalocyanine in which the Co metal centre bears an axial substituent R1 and an axial coordinated ligand R2, where R1 is CN, SCN, halogen, in particular Cl, Br or F, alkoxy, aryloxy, arylthio or alkylthio and R2 is no ligand or substituted or unsubstituted amine, water, an alcohol, H2S, a thioalcohol or an isonitrile.
摘要:
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.
摘要:
Novel metal complexes for optical data carriers which comprise a preferably transparent substrate which may, if desired, have preivously been coated with one or more reflection layers and to whose surface a light-writable 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 and which can be written on and read by means of blue or red light, preferably laser light, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that at least one such metal complex is used as light-absorbent compound, have been found.
摘要:
New azinoneutromethines of the formula ##STR1## in which the symbols used have the meaning given in the description, a process for their preparation and their use in thermal and photochromic recording materials, as nonlinear optical materials, as photoconductors in electrophotography and for dyeing fibres and woven fabrics of polyester and plastics.
摘要:
The invention provides novel metal complexes for optical data carriers 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-writable 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 blue or red light, preferably laser light, where the information layer comprises a light-absorbent compound and, if desired, a binder, characterized in that at least one of the abovementioned metal complexes is used as light-absorbent compound.