Abstract: The invention relates to a layer structure comprising a substrate layer and a layer, which comprises a plurality of silicon oxide particles, wherein said silicon oxide particles have a positively charged surface (a PCS layer), which PCS layer is at least partially superimposed to the substrate layer and wherein the refractive index of the PCS layer is less than 1.2, a process for preparing the layer structure having a substrate and a PCS layer, a layer structure obtainable by the process, an optical device comprising the layer structure and the use of a PCS layer.

Abstract: The invention relates to azo dyes of desulfo-K-acid [CA: 35400-55-6], their salts, a method for the preparation of these dyes, or salts thereof, a liquid phase comprising at least one of these dyes, a method for applying the liquid phase on a substrate, a printed matter and the use of these dyes in water-based inks for inkjet printing, in writing utensil or dyeing solutions for manufacturing color filters for optical and opto-electronic applications.

Abstract: Black disazo dyes of general formula (V) wherein A is a moiety of formula (VI) or of formula (VII) and B is a moiety of formula (VII) or of formula (IX) and wherein M, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, and R24, are as defined in the specification, are excellent black dyes for dying and printing cellulose containing materials and textile materials and, in particular, for preparation of recording liquids for ink jet printing and for writing utensils.

Abstract: A method for the preparation of silicium dioxide dispersions is provided, wherein the surface of the silicium dioxide is modified by a treatment with the reaction products, formed in a separate reaction step, of at least one compound of trivalent aluminum or of tetravalent zirconium or a mixture thereof with at least one aminoorganosilane; and the invention also relates to recording sheets for ink jet printing having such a dispersion incorporated in an ink-receiving layer.

Abstract: A method for the preparation of silicium dioxide dispersions is provided, wherein the surface of the silicium dioxide is modified by a treatment with the reaction products, formed in a separate reaction step, of at least one compound of trivalent aluminum or of tetravalent zirconium or a mixture thereof with at least one aminoorganosilane; and the invention also relates to recording sheets for ink jet printing having such a dispersion incorporated in an ink-receiving layer.

Abstract: The present invention has the objective to increase the light output yield of a light conversion foil in comparison to the impacting light. There is proposed to realize the following effects in the various layers of a conversion foil, individually or in combination, namely the isolation of the conversion layer (3) from the support (1) by a, preferably microporous and mesoporous, interlayer (2), and the incorporation of scattering centers (4) either into this interlayer, or into the conversion layer, or into both.

Abstract: A method for the preparation of silicon dioxide dispersions is described, wherein the surface of the silicon dioxide is modified by a treatment with the reaction products of a compound of trivalent aluminum with least one aminoorganosilane. These reaction products are formed in a separate reaction step. The present invention also relates to recording sheets for ink jet printing having such a dispersion incorporated in an ink-receiving layer.

Abstract: A recording sheet for ink jet printing is described, which consists of a support having coated onto said support at least two ink-receiving layers, wherein the ink-receiving layer situated next to the support contains nanoporous silicon dioxide with a positively charged surface and at least one binder and the ink-receiving layer situated further away from the support contains nanocrystalline, nanoporous aluminium oxide or aluminium oxide/hydroxide and at least one binder and, optionally, nanoporous silicon dioxide with a positively charged surface.

Abstract: A recording sheet for ink jet printing is provided, which consists of a support having coated thereon at least one ink-receiving layer consisting of binders and at least one nanoporous inorganic compound, wherein the recording sheet contains a polynuclear aluminum hydroxo complex with 30 aluminum atoms. In a preferred embodiment, the surface of the nanoporous inorganic compound is modified by a treatment with the aluminum hydroxo complex with 30 aluminum atoms.

Abstract: A recording sheet for ink jet printing is described, which consists of a support having coated thereon at least one ink-receiving layer consisting of binders, a nanocrystalline, nanoporous aluminum oxide or aluminum oxide/hydroxide, wherein the nanocrystalline, nanoporous aluminum oxide or aluminum oxide/hydroxide has been prepared in the absence of acids and has been treated with aluminum chlorohydrate. In a preferred embodiment of the invention the solution of aluminum chlorohydrate is aged at elevated temperature.

Abstract: Phthalocyanine dyes of general formula (II) and, in particular, of general formula (III) wherein R1-R8, R9-R12, Me, M, m, n, o and p are as described in the specification, are excellent photosensitizers for the preparation of pharmaceutical compositions for photodynamic therapy or photo diagnostics.

Abstract: Anthrapyridone dyes of general formula (III) wherein X, R1, R2, R3, R4, M and n are as defined in the specification, are excellent magenta dyes for dying and printing cellulose containing materials and textile materials and, in particular, for the preparation of recording liquids for ink jet printing.

Abstract: A recording sheet for ink jet printing is described, which consists of a paper support having coated on the front side of the support at least one ink-receiving layer consisting of fumed silicon dioxide with a positively charged surface and at least one binder, wherein at least one polyolefin layer is coated at the back side of said support and where there is no polyolefin layer between said paper support and the ink-receiving layer. Preferred is a recording sheet, wherein the surface of the fumed silicon dioxide has been modified by a treatment with the reaction products of a compound of trivalent aluminum with at least one aminoorganosilane.

Abstract: Phthalocyanine dyes of general formula (II) and, in particular, of general formula (III) wherein R1-R8, R9-R12, Me, M, m, n, o and p are as defined in the specification, are excellent dyes for dying and printing cellose containing materials and textile materials, and especially, for the preparation of inks for ink jet printing.

Abstract: An electrically active film and a process for its preparation at low temperatures are described. The electrically active film consists of a support having coated thereon at least one electrically active layer which contains nanocrystalline, nanoporous transition metal oxides, transition metal chalcogenides or their lithium inclusion complexes and, optionally, auxiliary, electrically non-active layers, wherein the electrically active layers still contain a binder or a mixture of binders at the end of the preparation process.

Abstract: An optical amplifying material is described, consisting of a support and having coated thereon a thin, transparent amplifying layer containing nanocrystalline, nanoporous aluminum oxides and/or aluminum oxide/hydroxides and, optionally, a binder, and, superposed on this layer, a luminescence layer preferably consisting of tris(8-hydroxyquinoline) aluminum.

Abstract: Ink set for ink jet printing comprised of at least one yellow ink, one magenta ink, one cyan ink and one black ink, wherein the yellow ink contains a mixture of at least one yellow dye with reddish hue of formula (I), wherein R, M, R17, R18, p4, n and m are as defined in the specification and at least one yellow dye with greenish hue of formula (II), wherein R, M, R6, R7, R8, n and m are as defined in the specification.

Abstract: Ink set for ink jet printing consisting of at least one yellow ink, one magenta ink, one cyan ink and one black ink, wherein the magenta ink contains, as first dye component, at least one dye of formula (I) wherein R2 and Aryl are as defined in the specification, or of formula (II) wherein M, R1 and Aryl are as defined in the specification and, as second dye component, at least one copper complex azo dye of formula (III) or of formula (IV) wherein M, R1, R2, R3, R4, R5, R6 and R7 are as defined in the specification.

Abstract: A laminated panel unit (1) comprising at least one image layer (3) between at least two panels (2), wherein for an area-contact gluing of the image layer (3) with neighboring panels (2), one intermediate adhesive layer (4, 4?) is provided on each side thereof, wherein the two intermediate adhesive layers and/or panels following each image layer (3) have a different thermal expansion behavior so that the image layer (3), due to the inhomogeneous laminate, is tensioned in case of temperature changes; as well as a method for producing a laminated panel unit (1), wherein the image layer (3) is connected with area contact on either side thereof with the panels (2) by using intermediate adhesive layers (4, 4?), the intermediate adhesive layers (4, 4?) and/or the panels (2) having a different thermal expansion behavior.

Abstract: There is described a recording sheet for ink jet printing comprising a polyethylene coated paper support having coated onto the front side of said support one ink receiving layer comprising a mixture of gelatin and rice starch.