Bayer Aktiengesellschaft

Bayer Materialscience Ag

Bayer Healthcare Aktiengesellschaft

Bayer Innovation Gmbh

Ralf Neigl

Horst Berneth

Uwe Claussen

Serguei Kostromine

Wolfgang Jacobsen

Hans-Joachim Vedder

Ralf Ruhmann

Helmut-Werner Heuer

Dietrich Haarer

Joachim Rubner

Hermann Womelsdorf

Igor Shelepin

Vladimir Gavrilov

Stephan Michaelis

Werner Hoheisel

Thomas Bieringer

Sergei Kostromin

Roland Wuttke

Joachim R&uuml;bner

Uwe Gessner

Stephan C Schmidt

Homopolymers suitable for storage of information provided optically are disclosed. The are formed from monomers which 

Homopolymers which exhibit a high level of photo-inducable birefringence

An electrochromic device which carries a coating comprising at least one UV absorber and nanoparticles is effectively protected against destruction by UV light.

Electrochromic device with nanoparticles and UV-absorbers in the protective coating

An electrochromic device comprising a pair of glass, plastic plates or plastic films At least one plate or film, is provided with an electrically conductive coating. At least one plate or film and its conductive coating are transparent and the other may be mirrored. The plates or films are joined together and form a volume filled with an electrochromic medium which comprises at least one reducible electrochromic substance OXand at least one oxidizable electrochromic substance RED. The OXcorresponds to the formula in which Rand R, each are alkyl, cycloalkyl, alkenyl, aralkyl, aryl, &#x2212;[C(PQ)]or a bivalent bridge B, Zis a bivalent radical of the formulae CRR, O, C&#x2550;O or o-phenylene, Rand R, each are hydrogen, methyl or ethyl, or CRRis C- to C-cycloalkane-1,1-diyl. The rings C, D, E and F, each may be substituted by up to 4 alkyl and/or alkoxy radicals, or respectively, may be linked via a &#x2014;(CH)&#x2014; or &#x2014;CH&#x2550;CH&#x2014;CH&#x2550;CH&#x2014; bridge. P and Q, each are &#x2014;CN or &#x2014;COO-alkyl. X&#x2014; is an anion.

Electrochromic device

The display device with touch sensor according to the invention consists of an electrochromic cell known per se or a liquid crystal cell, which is located between two transparent plates, a transparent cover plate and a transparent support plate. A radiation source whose light enters the cover plate and illuminates it is arranged on at least one of the end faces of the transparent cover plate. At least one photodetector, in whose photosensitive solid angle range some or all of the cover plate surface lies, is mounted on the support plate is.

Display comprising touch panel

The invention relates to electrochromic side-chain oligomers or polymers which can be used as electrochromic media.

Electrochromic contrast plate

Disclosed are monomers which contain groups that are at least trinuclear, which are capable of absorbing the electromagnetic radiation of visible light, and which are structured such that in their thermodynamically stable state they are distended and strongly anisometric. Homopolymers prepared from such monomers, a process of preparing such homopolymers, and articles comprising such homopolymers are also disclosed. The trinuclear groups of the monomers include at least one electron-attracting substituent which gives rise to a dipole moment which forms an angle of at least 20&#xb0; with the longitudinal axis of the trinuclear groups. The monomers of the present invention contain covalently bonded branching side groups, and may be represented by the following formula,HC&#x2550;C(R)&#x2014;C(O)-&#xa7;-T&#x2014;Q&#x2014;EIn the formula: R is hydrogen or methyl; &#xa7; represents one of oxygen, sulfur and NR; T represents a (CH)radical, optionally interrupted by, for example, &#x2014;O&#x2014;; Q represents a divalent linking group; and E represents the trinuclear group, e.g., a trinuclear group represented by the following formula (VII),

Monomers and homopolymers, having high photoinduceable double refraction, prepared therefrom

The invention describes an electrochromic display element in the form of an electrically dimmable mirror, an optical filter having an electrically alterable transparency or a display element which contains an electrochromic liquid between two electrode sheets, where at least one of the electrode sheets is transparent and has a transparent, electrically conductive layer and the transparent electrode sheet has a pattern of strips or grid made of a material having metallic conductivity in order to produce a uniform coloration of the electrochromic liquid.

Electrochromic display

The present invention relates to a device for generating light signals, in particular traffic lights. The device according to the invention contains a housing with at least one opening, which is closed by a plate, the absorption of which can be controlled electrically, there being located in the interior of the housing behind the opening a diffuser element, which reflects incident light through the plate. Preferred switched states of the plate are either black (absorption over the entire spectral region of visible light) and colored transparent (slight absorption in specific spectral regions) or transparent (no absorption over the entire spectral region of visible light). The device according to the invention is used to generate light signals by virtue of the fact that the ambient light strikes the plate and, depending on switched state, is absorbed entirely, partially or not at all by the plate. The light fraction transmitted through the plate is reflected by the diffuser plate located behind the plate and transmitted a second time through the plate, and can then be perceived from outside.

Device for generating light signals

Electrochromic display device comprising a pair of glass or plastic plates or plastic films of which at least one plate or film or both plates or films is/are provided on one side each with an electrically conducting coating. At least one plate or film and its conductive coating is transparent. On at least one of the two plates or films, the electrically conductive layer is divided into separate segments which are individually connected to a power source and each has an electric lead from the edge of the device. The plates or films are joined via a sealing ring on the sides on which they are conductively coated. The volume formed by the two plates or films and the sealing ring is filled with an electrochromic medium. The electric leads to the segments are electrically insulated from the electrochromic medium. Methods for producing an electrochromic display device in which the segments and their power leads are first produced by removal of material from a continuous conductive coating or are applied to the plates or films and the electrically insulating layer is subsequently applied to the power leads. Method of operating an electrochromic display device in which the display device is operated using a constant, pulsed or variable-amplitude DC potential or using an AC potential.

Electrochromic display device with power leads insulated from the electrochromic medium

The invention provides an optical method which permits, with the aid of 6 simple measurements, a conclusion regarding the suitability of antennas (groups which can absorb electromagnetic radiation) for incorporation into photoaddressable polymers.

Monomers for photoadressable side group polymers of high sensitivity

The invention relates to a light-protected electrochromic device containing a pair of glass or plastic sheets or plastic films. One side of at least one of said sheets or films, preferably both sheets or films, is provided with an electroconductive coating. At least one of said sheets or films and its electroconductive coating are transparent and the other can be metallized. The electroconductive coating of at least one of the two sheets or films can be divided up into separate, individually contacted surface segments. The sheets or films are joined by a sealing ring on the sides of their electroconductive coatings and the volume created by the sheets or films and the sealing ring is filled with an electrochromic medium. The invention is characterized in that the electrochromic device contains a yellow filter for which the wavelength at which absorbance in the long-wave flank reaches half of the very long-wave maximum absorbance value is between 370 and 500 nm, preferably between 380 and 470 nm. The invention is characterized by a considerably improved resistance to light in its activated state.

Electrochromic device with a yellow filter

This invention relates to electrochromic devices containing UV-protected electrochromic solutions comprising at least one oxidizable substance RED and at least one reducible substance OX linked by a bridging group and a UV absorber component.

UV-protected electrochromic solution

An electrochromic device comprising a pair of glass or plastic plates or plastic films of which at least one plate or film, preferably both plates or films, are provided on in each case one side with an electrically conductive coating, of which at least one plate or film and its conductive coating is transparent, of which the other may be mirrored, and of which in the case of at least one of the two plates or films the electrically conductive layer can be divided into separate, individually contacted area segments and the conductive coatings can be connected at at least one point to an electrical conductor, where the plates or films are joined together via a sealing ring on the sides of their conductive coating, and the volume formed by the two plates or films and the sealing ring is filled with an electrochromic medium which comprises at least one reducible electrochromic compound OX and at least one oxidizable electrochromic compound RED , in which the electrochromic medium also comprises a further reducible or an oxidizable electrochromic compound OX or RED respectively whose reduction or oxidation potential respectively has a value which is not greater than the reduction potential of OX or the oxidation potential of RED , is distinguished by improved switching behavior.

Electrochromic device having improved switching behavior

Homopolymers with high photoinduceable double refraction

Disclosed is an extremely rapidly photo-addressable storage media from inherently slow photo-addressable polymers by irradiating a substrate over a large area with a light source suitable for conventional inscription so that an optical anisotropy, i.e. a double refraction with a preferential direction in the plane of the substrate occurs. If the substrates so prepared are briefly intensively irradiated, the pattern is inscribed extremely rapidly and permanently. The invention also relates to novel side-chain polymers in which high optical anisotropy can be generated by irradiation. This optical anisotropy is very heat stable.

Growing community of inventors

Leverkusen, Germany

Ralf Neigl