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WO/1995/004086A1 |
A process is disclosed for producing a photosensitive object that consists of a polymer and contains at least one spirooxazin compound. The process has the following steps: an acrylate monomer or a methacrylate monomer or a mixture of se...
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WO/1995/003343A1 |
Proton-transfer, low self-absorbing chromophores of formula (1) wherein R2 and R3 are independently hydrogen, alkyl, aryl, cyano, nitro, halo or an ether group, R4 is O or N-H, and R5 is thienyl, naphthyl, furanyl, pyrrolyl, phenyl vinyl...
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WO/1995/000519A1 |
Described are photochromic compounds for, in particular, the colouring of transparent elements made of plastic material. The molecules of the compounds proposed carry at least two photochromic subsystems which are not indolinospiropyrans.
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WO/1995/000866A1 |
Described are novel reversible photochromic naphthopyran compounds, examples of which are compounds substituted at the 3 position of the pyran ring with (i) an aryl substituent and (ii) a phenyl substituent having a 5- or 6-member hetero...
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WO/1995/000867A1 |
Described are novel reversible photochromic 3H-naphtho-[2,1-b]pyran compounds, of graphic formula (IA), wherein R1 is hydrogen or alkyl, R2 is hydrogen or preferably a carboalkoxy group and R3 is hydrogen or preferably an alkyl group, pr...
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WO/1994/029314A1 |
Stable, electroactive material which when a potential is applied from the outside is subjected to one or more reversible redox reactions, for use in devices with an electrochromic display or another electrochromic colour change or in bat...
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WO/1994/028073A1 |
Polarizing coatings are formed from dyestuffs which provide a stable liquid crystalline phase in a wide range of concentrations, temperatures and pH-values. Particles formed by aggregates of the liquid crystal molecules are oriented in a...
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WO/1994/026729A1 |
Tribochromic compounds are disclosed which are furan derivatives of general formula (I), wherein B represents an adamantylidene or a cycloalkylidene group, or the group (a) where R1 and R2 independently represent an alkyl group or a cycl...
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WO/1994/023333A1 |
An electrochromic device (100) with electrode surface confined complementary polymer electrochromic materials. The electrochromic material (20), able to change from a substantially colorless to a colored state upon oxidation, is surface ...
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WO/1994/018601A1 |
A third-order nonlinear optical material comprising any of the quinone derivatives represented by general formulae (1) through (3) and formula (4): wherein R1, R2, R3, R4, R5 and R6 are each as defined in the specification. The material ...
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WO/1994/015246A2 |
Electroconductive particles comprising an electrically conductive non-metallic particle coated with an electrochromic material. Such electroconductive particles can be provided in polymeric dispersions that are useful for preparing elect...
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WO/1994/012986A1 |
The copolymer described is a segmented copolymer consisting essentially of organic segments A which have a number i of reactive ends such that i is from 1 to 6 inclusive, and segments B which have a number j of reactive ends such that j ...
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WO/1994/008260A1 |
Photochromic optical articles of improved resistance to light fatigue are provided by the use of a combination of hindered amine light stabilizer and asymmetric diaryloxalamide light stabilizer with a mixture of (1) photochromic material...
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WO/1994/005008A1 |
Compositions of bacteriorhodopsin variants with increased memory time and their use for reversible optical information recording are disclosed. The compositions are characterized in that the configuration of the retinal of the photoprodu...
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WO/1994/001804A1 |
A filter is formed on a solid state imager by: forming, on the imaging surface of the imager, an adherent layer of a dye-containing photoresist composition comprising a photoresist resin and a thermochromic dye, this dye being substantia...
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WO/1993/025603A1 |
Polyaniles of general formula (I) in which the constituents and indices have the following significance: R?1¿: C¿1? to C¿24? alkyl groups, C¿1? to C¿24? alkoxy groups, C1, Br, CF¿3? or NO¿2?; R?2¿: para-phenylene, condensed aroma...
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WO/1993/017071A1 |
Described are novel reversible photochromic naphthopyran compounds substituted at the number eight carbon atom on the naphtho portion of the naphthopyran ring with, for example, a methoxy group. Also described are organic host materials ...
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WO/1993/010112A1 |
Described are novel reversible photochromic naphthopyran compounds having at least one ortho substituted phenyl group at the 3-position of the pyran ring. Also described are organic host materials that contain or that are coated with suc...
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WO/1993/009092A1 |
Bis(perfluorosulphonyl)methanes, process for preparing same and uses thereof. The compounds of the invention are based on the formula (1/nM)+[(RFSO2)2CY]- in which Y denotes an electron-attracting group chosen from -C=N and RZ groupings ...
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WO/1993/006074A1 |
A 2-propanol compound represented by general formula (I), which is used as a preservative for colored images in heat-sensitive recording material and particularly improved in plasticizer resistance, wherein Y represents a group of genera...
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WO/1993/005077A2 |
The present invention involves monomeric compounds having the structure (I). Substituents W and Z are independently -CN, -NO2, -aryl, -aryl-V, -COX, SO2R, -H, or -alkyl. Substituent X is -OR, or -NR,R where R and R1 are independently -al...
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WO/1993/002383A1 |
Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs), wherein the polar disulfone-functionalized molecules are of formula (I), where n is 0, 1 or 2; R1 and R2 each independentl...
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WO/1992/022687A1 |
The disclosure relates, inter alia, to a composition and, a method of making the composition. The composition comprises an electrically conductive polymer having a porous structure and a compound formed in situ and coating at least a por...
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WO/1992/021052A1 |
The invention makes available an electrochromic light valve (1) with an active electrochromic film (2) and a passive electrochromic film (3). Between the two electrochromic films is an electrolyte (4). Each of the electrochromic films is...
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WO/1992/019694A1 |
An electrochromic device comprises two electrodes separated by an electrolytic medium and means to permit the application of a potential between the electrodes, so as to create a circuit for charge transfer, and an electrochromic materia...
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WO/1992/016531A1 |
A novel compound suitable for use as a piezochromic material, namely a crystal comprising an indolinospirobenzothiopyran derivative represented by general formula (I) and a ring-opening isomer thereof, and a process for the production th...
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WO/1992/016538A1 |
A novel compound exhibiting stable photochromism, i.e., a transition metal-spirobenzothiopyran complex represented by general formula (I) and a process for producing the same, wherein R1 represents C1 to C20 alkyl; R2, R3, R4, R5, R6, R7...
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WO/1992/016505A1 |
A novel compound suitable for use as thermochromic and photochromic materials, namely an indolinospirobenzopyran derivative represented by general formula (I), and a process for the production thereof, wherein R1 represents C1 to C20 alk...
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WO/1992/016027A1 |
Material having enhanced electrochromic and electrocatalytic activity is prepared by electrodeposition, onto a cathodic substrate, of material from a solution comprising ions of at least one metal (A) capable of forming a hydrogen bronze...
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WO/1992/013927A1 |
A photochromic composition for incorporation into a light-transmitting polymer is described. Silver-containing crystallites of silver halide or non-halide silver complex are capped with an organic capping group using multivalent metal io...
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WO/1992/009593A1 |
Described are novel reversible photochromic naphthopyran compounds substituted on the naphthyl portion at the carbon atom juxtaposed to the oxygen of the pyran ring with, for example, an acetoxy group. Also described are organic host mat...
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WO/1992/009374A1 |
Multi-layer Langmuir-Blodgett films comprising alternate layers of an optically non-linear amphiphilic compound and a spacer compound wherein the spacer comprises at least two hydrophobic substituents, have high second order non-linear o...
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WO/1992/009004A1 |
A material for light modulation methods, cells and devices consits of a homogenous mixture of at least: a) water-soluble salt of at least one metal which can be reversibly cathodically deposited and anodically oxidized from an aqueous so...
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WO/1992/000547A1 |
A switching medium which is based upon an SiO polymeric chain (optionally cross-linked) substituted with organic groups collectively adapted to: (i) confer photonic activity on the polymer to cause a change of refractive index in respons...
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WO/1991/013381A1 |
A display having an array of matrix addressable pairs of electrodes mounted face up on the same substrate. The pairs of electrodes (34b) are derivatized with either electrochromic materials (80) or electroluminescent material to form the...
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WO/1991/009088A1 |
The powder of the present invention is composed either of alumina, titanium and platinum or palladium, or of alumina, silica and palladium as the main components, and can radiate feeble-energy infrared rays amply in a wide wave-length ra...
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WO/1991/008507A1 |
An electrochemical color change cell incorporating as a color changing agent intramolecular charge transfer salt or an intermolecular charge transfer salt. The intermolecular charge transfer salts and the intramolecular charge transfer s...
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WO/1991/007658A1 |
A gas sensor has a gas sensing component which permits measurement of a change in optical absorption and, optionally also a change in electrical conductivity on exposure to an environment containing certain gases. The gas sensing compone...
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WO/1991/002723A1 |
Derivatives of phenanthroline and bipyridyl each having a substituent which is capable of undergoing electrolytic deposition or electrolytic polymerization to be directly formed into film. They can be used in producing electrochromic dis...
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WO/1991/003002A1 |
The invention concerns polymeric materials containing chromophoric compounds exhibiting non-linear optical activity. These chromophores have conjugated $g(p)-systems substituted with electron donor/acceptor groups. They also have photo-c...
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WO/1991/001312A1 |
Photoactive compounds having general formulae (III) are provided in which A represents oxygen or NR1 wherein R1 represents hydrogen, alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 12 carbon atoms, aralkyl having 7 to 9 carbon ...
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WO/1990/012819A1 |
A photochromic article having improved photochromic equilibrium response is described. In particular, a photochromic compound is incorporated into or applied to an article, e.g., matrix, of a synthetic organic resin prepared from a compo...
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WO/1990/006539A1 |
A security mark has a photochromic compound covered by a controlled absorption layer comprising a saturable absorber. Light of a wavelength serving to convert the photochromic compound is at low intensity absorbed by the saturable absorb...
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WO/1990/006535A1 |
Classes of materials suitable for the construction of devices which can be switched under the influence of an applied optical field (exploiting non linear susceptibility of the material) are described. Essentially such materials comprise...
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WO/1990/003379A1 |
The specification describes adamantanospiroheteroatomatepyranes and adamantanospiro(1.3)oxazines of general formula (1), where: R0 is a substituent from the series H, halogen, O-alkyl, N-alkyl; R1-R4 is a substituent from the series H, a...
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WO/1990/001480A1 |
Substances with at least two different coloured forms, one of which can be converted to the other by supplying energy, are used as storage media in optical memories.
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WO/1989/012839A1 |
A photochromic material adapted for coating light transmissive materials. The photochromic material contains photosensitive silver halide crystals having dimensions in the range of approximately 50 Angstroems to 800 Angstroems. The silve...
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WO/1989/012084A1 |
A photochromic color rendering regulating composition or cosmetic containing a photochromic inorganic compound is disclosed. The photochromic inorganic compound suitably colors the composition or cosmetic containing it depending upon the...
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WO/1989/011482A1 |
Described are novel spiro(benzindolino) benzoxazine compounds of formula (I), wherein: (a) B is a benzene ring that is fused to the e, f, or g face of the six member ring of the indolino portion of the compound; (b) R1 is selected from t...
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WO/1989/011674A1 |
An optical device is described having a polarisation state which is externally controllable and comprises a layer of a photochromic material which possesses a polar state in its bleached or coloured form and which has been subjected to m...
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