Abstract: The invention provides a method of filing a PDLC cell, a polymerizable mixture suitable for this purpose as well as a display device provided with such a PDLC cell. The mixture in accordance with the invention comprises two types of non-volatile reactive monomers, the first type of monomer being readily miscible with liquid crystalline material and the second type of monomer being poorly miscible with the liquid crystalline material. Such mixtures prove to be very stable. In addition, when such mixtures are used in cells, problems regarding compositional drift do not occur. Cells in which the inventive mixture is used demonstrate a relatively low hysteresis as well as a relatively low switching voltage. By virtue thereof, it is very attractive to use these cells in a display device.

Abstract: The invention provides a method of filling a PDLC cell, a polymerizable mixture suitable for this purpose as well as a display device provided with such a PDLC cell. The mixture in accordance with the invention comprises two types of non-volatile reactive monomers, the first type of monomer being readily miscible with liquid crystalline material and the second type of monomer being poorly miscible with the liquid crystalline material. Such mixtures prove to be very stable. In addition, when such mixtures are used in cells, problems regarding compositional drift do not occur. Cells in which the inventive mixture is used demonstrate a relatively low hysteresis as well as a relatively low switching voltage. By virtue thereof, it is very attractive to use these cells in a display device.

Abstract: Method of preparing a composite material comprising a silica network and chains of a polyhydroxy compound which are interwoven therewith and a liquid crystal display device having a top coat of such a composite material.A description is given of a method of preparing a composite material comprising a silica network and, interwoven therewith, chains of, for example, polyhydroxyalkyl acrylate, by first photopolymerizing a tetraalkenyl orthosilicate with UV-light and subsequently converting it into the composite material by subjecting it to a sol-gel treatment. The material obtained is optically transparent. In addition, the material exhibits very little shrinkage so that it can be deposited on a substrate in relatively thick layers. The composite material is very suitable for a top coat 5 on a color-filter layer 3 in a liquid crystal display device because, inter alia, it adheres well to the ITO layer 7.

Abstract: A method of coating the bulb wall of a low-pressure mercury vapour discharge lamp with a luminescent layer, whereby a monomer and an initiator are added to a suspension comprising at least a luminescent material and a binder before a layer of this suspension is provided, which monomer is polymerized after drying of the suspension layer in order to fix the luminescent material and the binder.

Abstract: Glass capillaries having an internal diameter of a few micrometers are internally provided with a relatively thick polymer film by in-situ polymerisation of suitable monomers and/or oligomers in a solvent. The said polymer film is suitable as a stationary phase for liquid chromatography.

Abstract: Glass capillaries having an internal diameter of a few micrometers are internally provided with a relatively thick polymer film by in-situ polymerization of suitable monomers and/or oligomers in a solvent. The said polymer film is suitable as a stationary phase for liquid chromatography.

Abstract: Laminated optical component, for example an aspherical lens, comprising a supporting member which is manufactured from a transparent inorganic material and on at least one side has a layer of lacquer of a specific composition cured by means of radiation, for example UV radiation.

Abstract: An optically readable information disc having a substrate plate which on at least one side comprises an information layer of a lacquer cured by irradiation for example by ultraviolet light, said layer carrying an optically readable information track in which the lacquer is a monocomponent lacquer which, in addition to 0.1-5% by weight of auxiliary substances, comprises only one radiation cross-linkable compound in a quantity by weight from 95-99.9% selected from the group consisting of alkanedioldiacrylates, alkanedioldimethacrylates, alkeneglycoldiacrylates and alkeneglycoldimethacrylates having the acrylate or methacrylate groups in end position, of which the alkane moiety and alkene moiety comprise from 4 to 12 carbon atoms, and in which the cured lacquer apart from the auxiliary substances comprises no or substantially no extractable material.

Abstract: Photolysis of organic mercury compounds in mercury-containing samples to determine mercury therein by means of irradiation with a light source emitting predominantly below 260 nm.