Including Fused Or Bridged Rings Patents (Class 252/299.62)
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Patent number: 7070838Abstract: The present invention provides a compound represented by formula (1) defined in the specification and a liquid crystal composition comprising the compound. The invention further provides a polymer obtained by polymerization of compound or composition above, and further the present invention provides a film, an optical anisotropic material, A ¼ or ½ wavelength functional plate, an optical compensation element, an optical element and a liquid crystal display element employing the polymer.Type: GrantFiled: June 23, 2004Date of Patent: July 4, 2006Assignees: Chisso Petrochemical Corporation, Chisso CorporationInventors: Yasuyuki Sasada, Motoki Yanai
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Patent number: 7067179Abstract: A novel compound represented by the general formula (I), and a nematic liquid crystal composition incorporating the same. A compound represented by the general formula (I) can be produced industrially extremely easily, as shown in the examples, displays superior compatibility with current general purpose host liquid crystals as a nematic phase, and also shows little crystal precipitation at low temperatures. Moreover, by addition of a small amount of such a compound to a host liquid crystal, the liquid crystal temperature range at low temperatures can be effectively widened without any significant worsening of the various characteristics of the liquid crystal material. Consequently, a compound of the present invention is an extremely useful liquid crystal material which is suitable for various liquid crystal display elements which require a broad operating temperature range.Type: GrantFiled: September 10, 1999Date of Patent: June 27, 2006Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Shinji Ogawa, Tatsuo Kawara, Sadao Takehara, Hiroyuki Ohnishi, Kiyofumi Takeuchi, Haruyoshi Takatsu, Gerwald Grahe, Rainer Bruno Frings, Christine Fugger, Cornelia Pithart
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Patent number: 7026021Abstract: Compounds of the general formula (I) where: R1, R2 are each independently a) H b) -M1-A1-R5 c) a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms or a straight-chain or branched alkenyl radical having from 2 to 16 carbon atoms, where c1) one or more nonadjacent and nonterminal CH2 groups may be replaced by —O—, —C(?O)O—, —O—C(?O)—, —O—C(?O)—O—, —C(?O)— or —Si(CH3)2—, and/or c2) one CH2 group may be replaced by —C?C—, cyclopropane-1,2-diyl, cyclobutane-1,3-diyl, cyclohexane-1,4-diyl or phenylene-1,4-diyl, and/or c3) one or more hydrogen atoms may be replaced by F and/or Cl, p, q are each independently 0 or 1 G1-G2 is —CH2CH—, —CH?C—, —CH2CH2CH— or —CH?CH—CH— M1 is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO—O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond, A1 is 1,4-phenylene where one or two hydrogen atoms may be replaced by F, Cl, CN and/or OCF3, or up to three hydrogen atoms may be replaced byType: GrantFiled: July 30, 2004Date of Patent: April 11, 2006Assignee: Merck Patent GmbHInventors: Rainer Wingen, Barbara Hornung, Wolfgang Schmidt
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Patent number: 7022259Abstract: A liquid crystal compound with high helical twisting power, a method for preparing the same, and a liquid crystal composition containing the same. The liquid crystal compounds include cyclic group chain structures similar to the liquid crystal to serve as the core structure, and multi-ring structures of natural alcohol with optical activity, such as alcoholates of terpenol, borneol, cinchonidine, quinine, or derivatives thereof. As a result, the liquid crystal composition containing the liquid crystal compounds can filter out light of specific wavelengths from incident light due to optical activity and high helical twisting power thereof.Type: GrantFiled: September 30, 2003Date of Patent: April 4, 2006Assignee: Industrial Technology Research InstituteInventors: Dao-Hung Lee, Ding-Jen Chen, Kung-Lung Cheng
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Patent number: 7018685Abstract: The invention relates to fluorinated aromatics of the formula (I) where X is CH2, C?O, CF2, O or S, Y is H or F, with the proviso that Y has to be F when X is CH2, and where the other parameters are as defined in claim 1, and also to their use in liquid-crystal mixtures, and also to liquid-crystal mixtures comprising these compounds and to liquid-crystal displays comprising these mixtures.Type: GrantFiled: January 10, 2002Date of Patent: March 28, 2006Assignee: Merck Patent GmbHInventors: Wolfgang Schmidt, Rainer Wingen, Barbara Hornung
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Patent number: 7014791Abstract: Liquid crystalline polymer having repeat units derived from 4,4?-biphenol, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and 4-hydroxybenzoic acid in a limited compositional range have melting points of 400° C. or more, and are useful for molded articles and for films, particularly for uses where good high temperature resistance is needed.Type: GrantFiled: December 2, 2003Date of Patent: March 21, 2006Assignee: E.I. du Pont de Nemours and CompanyInventors: Marion G. Waggoner, Michael Robert Samuels
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Patent number: 7014890Abstract: Compounds of the formula (I) in which the parameters are as defined herein, are suitable for use in liquid-crystal media and liquid-crystal displays which contain these media.Type: GrantFiled: June 9, 2003Date of Patent: March 21, 2006Assignee: Merck Patent GmbHInventors: Matthias Bremer, Melanie Klasen-Memmer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
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Patent number: 7001648Abstract: A glassy chiral-nematic liquid crystal composition includes a compound having the structural formula wherein each N represents a nematic group connected to the 1, 3, 5-benzenetricarbonyl central moiety by a carboxylic ester linkage and Ch represents a chiral group connected to the central moiety by a carboxylic ester linkage. An optical device is formed from at least one of the glassy chiral-nematic liquid crystal compositions.Type: GrantFiled: March 19, 2004Date of Patent: February 21, 2006Assignee: University of RochesterInventors: Shaw H. Chen, Huang-Ming Philip Chen
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Patent number: 6984712Abstract: The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.Type: GrantFiled: November 25, 2002Date of Patent: January 10, 2006Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiroyuki Kato, Kazunori Ueda
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Patent number: 6962734Abstract: The present invention relates to organic chemistry, in particular, to synthesis of sulfoderivatives of the polycyclic compounds and fabrication of optically anisotropic coatings on their base. The indanthrone sulfoderivatives of the general structural formulas I or II capable of forming LLC phase are disclosed. The disclosed compounds could be used, in particular, for producing optically isotropic or anisotropic and at least partially crystalline films. The application also includes the liquid crystal systems based on the disclosed compounds, and anisotropic films. wherein n is 3 or 4, R?CH3, C2H5, OCH3, OC2H5, Cl, Br, OH, NH2, z is the value selected from the list including 0, 1, 2, 3, and 4, M—counterion, and j—number of counterions in a dye molecule, and which can be fractional in case of one counterion belonging to several molecules, and in case n>1, counterions may be different.Type: GrantFiled: January 27, 2005Date of Patent: November 8, 2005Assignee: Nitto Denko CorporationInventors: Victor V. Nazarov, Elena N. Sidorenko
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Patent number: 6955838Abstract: Compounds of the formula (I) where: R1, R2 are each independently a) H b) -M1-A1-R5 c) a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms or a straight-chain or branched alkenyl radical having from 2 to 16 carbon atoms, where c1) one or more nonadjacent and nonterminal CH2 groups may be replaced by —O—, —C(?O)O—, —O—C(?O)—, —O—C(?O)—O—, —C(?O)— or —Si(CH3)2—, and/or c2) one CH2 group may be replaced by —C?C—, cyclopropane-1,2-diyl, cyclobutane-1,3-diyl, cyclohexane-1,4-diyl or phenylene-1,4-diyl, and/or c3) one or more hydrogen atoms may be replaced by F and/or Cl, p, q, r are each independently 0 or 1 M1—is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO—O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond, A1 is 1,4-phenylene where one or two hydrogen atoms may be replaced by F, Cl, CN and/or OCF3, or up to three hydrogen atoms may be replaced by fluorine, 1,4-cyclohexylene where one or two hydrogen atType: GrantFiled: July 30, 2004Date of Patent: October 18, 2005Assignee: Clariant International Ltd.Inventors: Rainer Wingen, Barbara Hornung, Wolfgang Schmidt
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Patent number: 6939940Abstract: Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and were end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The resulting reactive end-capped liquid crystal oligomers exhibit a variety of improved and preferred physical properties. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase.Type: GrantFiled: January 5, 2001Date of Patent: September 6, 2005Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Theodorous J. Dingemans, Erik S. Weiser, Terry L. St. Clair
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Patent number: 6936312Abstract: A liquid crystal composition comprising a first component consisting of at least one compound selected from a group of compounds represented by Formula (I) and a second component consisting of at least one compound selected from a group of compounds represented by Formulas (II-1) to (II-8): in which each symbols of Formula (I) are defined in the specification and Formulas (II-1) to (II-8) and their symbols are also defined in the specification.Type: GrantFiled: April 9, 2003Date of Patent: August 30, 2005Assignees: Chisso Corporation, Chisso Petrochemical CorporationInventors: Yuzuru Torii, Hitoshi Yamamoto
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Patent number: 6929834Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of negative dielectric anisotropy which comprises at least one compound of the formula I in which R11 and R12, ring A, Z, a, L1 and L2 are as defined in claim 1, and the use thereof for an active-matrix display based on the ECB effect.Type: GrantFiled: September 25, 2001Date of Patent: August 16, 2005Assignee: Merck Patent GmbHInventors: Melaine Klasen-Memmer, Clarissa Weller, Matthias Bremer, Detlef Pauluth, Hans-Rolf Duebal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
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Patent number: 6916513Abstract: The invention relates to 2,4?-substituted 6-cyclohexyl-trans-decalins of the general formula I in which R1, R2 and Z are as defined in Claim 1, to the use thereof as components of liquid-crystalline media, and to a liquid-crystal display element and an electro-optical display element.Type: GrantFiled: March 22, 2002Date of Patent: July 12, 2005Assignee: Merck Patent GmbHInventors: Matthias Bremer, Detlef Pauluth, Georg Lüssem
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Patent number: 6913710Abstract: The invention relates to new reactive mesogenic benzodithiophene derivatives, their use as semiconductors or charge transport materials, in optical, electro-optical or electronic devices like for example liquid crystal displays, optical films, organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the reactive mesogenic benzodithiophenes.Type: GrantFiled: April 24, 2003Date of Patent: July 5, 2005Assignee: Merck Patent GmbHInventors: Louise Farrand, Martin Heeney, Steven Tierney, Mark Giles, Marcus Thompson, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6905739Abstract: A compound is of formula (I), in which: A1 to A4, E1 and E2 each independently represent hydrogen or an optionally-substituted hydrocarbon group; B1 and B2 each independently represent a single bond, an oxygen atom or an optionally-substituted hydrocarbon group; MG1 and MG2 each independently represent an optionally-substituted ring system; CG is a divalent or polyvalent chiral group. The optically active compound may be used as a doping agent for liquid crystals for a wide range of applications including solid state cholesteric filters for projection displays, circular polarisers, optical filters, etc.Type: GrantFiled: December 20, 2000Date of Patent: June 14, 2005Assignee: Rolic AGInventors: Zoubair Mohammed Cherkaoui, Klaus Schmitt
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Patent number: 6899823Abstract: A compound or a polymer thereof promises an advantageous use for an ink-jet ink or a polymer dispersion liquid crystal display.Type: GrantFiled: December 26, 2001Date of Patent: May 31, 2005Assignee: Canon Kabushiki KaishaInventors: Koichi Sato, Jun Kamatani
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Patent number: 6887533Abstract: Compounds of the formula (I) where: X1 is H or F G1-G2 is —CH2—CH— or CH?C— R1, R2 are a) H b) the M2-A2-R5 moiety c) for example, a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms R3 and R4 are each, for example, H, the M2-A2-R5 moiety or a straight-chain or branched alkyl or alkyloxy radical having from 1 to 16 carbon atoms A2 is, for example, 1,4-phenylene, with the provisos that a) when R2 is not H, R1 and R3 have to be H, b) when R2 is H, R4 must not have the definitions c) or d), c) R1, R2, R3 and R4 must not at the same time be H.Type: GrantFiled: March 24, 2004Date of Patent: May 3, 2005Assignee: Clariant International, Ltd.Inventors: Wolfgang Schmidt, Barbara Hornung, Rainer Wingen
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Patent number: 6884477Abstract: An electroluminescence device contains a carrier transporting layer comprising a liquid crystal compound represented by R—X—A—B—X?—R???(I), wherein A and B denote a naphthalene-2,6-diyl skeleton optionally substituted with one or two of F, Cl, Br, CH3 and CF3, at least one of A and B comprising a naphthalene-2,6-diyl skeleton having one to four CH groups replaced with N; X and X? denote —O—, —S—, —OOC— or —COO—; and one of R and R? denotes H, F, Cl, Br, CF3 or a linear or branched alkyl group having 1-20 carbon atoms, and the other one of R and R? denotes a linear or branched alkyl group having 3-20 carbon atoms, said alkyl groups being independently capable of including one methylene group which can be replaced with —O—, —S—, —CH?CH— or —C?C— so long as heteroatoms are not adjacent to each other.Type: GrantFiled: November 28, 2000Date of Patent: April 26, 2005Assignee: Canon Kabushiki KaishaInventors: Takao Takiguchi, Shinjiro Okada, Akira Tsuboyama, Takashi Moriyama
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Patent number: 6878421Abstract: The invention relates to a liquid crystalline medium, based on a mixture of polar compounds with a positive dielectric anisotropy. Said medium is characterised in that it contains one or more compounds of formula (I) wherein R, A1, A2, Z1, Z2, X1, X2, n and o are defined as per claim 1.Type: GrantFiled: September 17, 2001Date of Patent: April 12, 2005Assignee: Merck Patent GmbHInventors: Michael Heckmeier, Martin Engel, Brigitte Schuler, Matthias Bremer, Detlef Pauluth
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Patent number: 6867243Abstract: There is provided a process for forming a light emitting polymer comprising photopolymerization of a reactive mesogen having an endgroup which is susceptible to photopolymerization e.g. by a radical polymerization process. Also provided are methods for using the light emitter in displays, backlights, electronic apparatus and security viewers.Type: GrantFiled: July 1, 2002Date of Patent: March 15, 2005Assignee: University of HullInventors: Mary O'Neill, Stephen Malcolm Kelly, Adam Edward Alexander Contoret, Gary James Richards
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Patent number: 6863841Abstract: New oxadiazole derivatives comprising one or more identical or different recurring units of formula I wherein W, M, w, m1, m2, p1, p2, and Y1 to Y4 are as defined herein are suitable for use in liquid crystalline mixtures, polymerizable and polymer materials.Type: GrantFiled: December 13, 2002Date of Patent: March 8, 2005Assignee: Merck Patent GmbHInventors: Peer Kirsch, Alexander Hahn
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Patent number: 6858271Abstract: A conductive organic compound device structure suitable for constituting an electronic device, such as an organic EL device, is formed by including a pair of oppositely spaced electrodes, and a carrier transporting layer disposed between the electrodes and in contact with one of the electrodes. The carrier transporting layer comprises a conductive organic compound having a ?-electron resonance structure in its molecule. In the device, the ?-electron resonance structure plane of the conductive organic compound in the carrier transporting layer is aligned substantially parallel to surfaces of the electrodes. The conductive organic compound is preferably a conductive liquid crystal, such as a discotic liquid crystal or a smectic liquid crystal, and a layer thereof is included in the device, preferably by vacuum deposition.Type: GrantFiled: September 7, 2000Date of Patent: February 22, 2005Assignee: Canon Kabushiki KaishaInventors: Shinjiro Okada, Akira Tsuboyama, Naoya Nishida, Takashi Moriyama
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Patent number: 6849203Abstract: The invention relates to photoisomerizable compounds of formula I wherein A, Z, L, R, R1, k, m and r are defined herein.Type: GrantFiled: April 5, 2002Date of Patent: February 1, 2005Assignee: Merck Patent Gesellschaft Mit Beschraenkter HaftungInventors: Louise Diane Farrand, Christopher Worrall, Owain Llyr Parri
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Patent number: 6849202Abstract: There are disclosed novel compounds, liquid crystal compositions, polymers, optically anisotropic products, and optical or liquid crystal elements that have large refractive index anisotropy, mix easily with other liquid crystals, have advantageous stability against light, and exhibit absorption at practically short wavelength in the ultraviolet region. The compounds are represented by the formula (1) and have a phenylacetylene structure, wherein difference ?E in energy of HOMO of parts (1-1), (1-2) and (1-3) calculated by the method of molecular orbitals is not less than 0.3 electronvolt, and the polarizability anisotropy ?? of a molecule represented by the formula (1) calculated in the same way is not lower than 500 A.U.: (A1 to A4: H, F, alkyl or alkoxy group of C1 to C10 optionally substituted with F; P1, P2: structure fulfilling the conditions of HOMO energy and polarizability).Type: GrantFiled: February 8, 2002Date of Patent: February 1, 2005Assignee: Sumitomo Chemical Company, LimitedInventors: Chizu Sekine, Masamitsu Ishitobi, Koichi Fujisawa, Kazunori Iwakura, Masayoshi Minai
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Patent number: 6838128Abstract: The invention relates to chiral nonracemic liquid crystal compounds which are useful as components in liquid crystal compositions to impart high polarization to the mixture. The materials of this invention can be combined with liquid crystal host materials to impart improved properties to mixtures. Chiral nonracemic compounds of this invention can function as additives or dopants in host materials to impart chirality into an LC material.Type: GrantFiled: February 5, 2002Date of Patent: January 4, 2005Assignee: Displaytech, Inc.Inventors: Michael Wand, Xin Hua Chen
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Publication number: 20040256599Abstract: A thermotropic liquid crystalline polymer, which is obtainable by copolymerizing a trifunctional hydroxynaphthalene carboxylic acid represented by the general formula (I) and/or reactive derivative thereof with other polymerizing monomer(s) 1Type: ApplicationFiled: December 15, 2003Publication date: December 23, 2004Inventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Hiroyuki Kato, Motoki Asahara
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Publication number: 20040245499Abstract: An optically anisotropic sheet comprises an optically anisotropic layer, an orientation layer and a transparent support in this order. The optically anisotropic layer is formed from discotic liquid crystal molecules. The orientation layer is subjected to rubbing treatment. The discotic liquid crystal molecules are aligned with the orientation layer. An average inclined angle of discotic planes of the discotic liquid crystal molecules is in the range of 50° to 90°. An average direction of optical axes of the discotic liquid crystal molecules is essentially parallel to a rubbing direction of the orientation layer.Type: ApplicationFiled: July 2, 2004Publication date: December 9, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masayuki Negoro, Jiro Yamaguchi, Ken Kawata
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Patent number: 6824709Abstract: Provided are a fluorene derivative represented by Formula (1) and a polymer thereof: wherein at least one of A1, A2 and A3 is a group represented by Formula (2), and the others are 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, pyridine-2,5-diyl, pyridazine-3,6-diyl, pyrimidine-2,5-diyl or dioxane-2,5-diyl; m, n and p are independently 0 or 1; R1 is —CN, —CF3, —CF2H, —CFH2, —OCF3, —OCF2H, —N═C═O, —N═C═S, —F, —Cl, or alkyl in which one hydrogen may be replaced by (meth)acryloyloxy or vinyloxy and optional —CH2— may be replaced by —O—, —S—, —CF2—, —CH═CH—, —COO—, —OCO— or —CO—; R2 is hydrogen or methyl; Z1 to Z3 are independently a single bond, —O—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CH2CH2—, —(CType: GrantFiled: December 12, 2002Date of Patent: November 30, 2004Assignees: Chisso Corporation, Chisso Petrochemical CorporationInventor: Ryushi Shundo
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Publication number: 20040232382Abstract: A liquid crystal composition comprising at least one liquid crystal compound and at least one anthraquinone compound represented by formula (1) below: Formula (1) (wherein R2 to R8 each independently represents a hydrogen or substituent; Het is a sulfur or oxygen; B1 and B2 each independently represents an optionally substituted arylene, heteroarylene, cycloalkan-diyl or cycloalken-diyl; Q1 is a bivalent linking group; C1 is an optionally substituted alkyl, cycloalkyl, alkoxy, alkokycarbonyl or acyloxy; p, q and r each represents a number from 0 to 5 and n is a number from 1 to 3 satisfying 3≦(p+r)×n≦10; when plural {(B1)p-(Q1)q-(B2)r} are present, these may be the same or different) was disclosed.Type: ApplicationFiled: July 12, 2004Publication date: November 25, 2004Inventors: Hisashi Okamura, Takashi Katoh
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Patent number: 6821581Abstract: An optically active compound of the general formula (1) useful as a chiral dopant and use thereof, wherein each of m and n is independently an integer of 4 to 8, A is —Ph—COO—Ph—, —Ph—Ph—COO—, —Cy—COO—Ph—, —Ph—OOC—Ph—COO—, —Ph—OOC—Cy—COO—, —Ph—OOC—Np—COO— or —Np—OOC— in which —Ph— is a 1,4-phenylene group, —Cy— is a trans-1,4-cyclohexylene group and —Np— is a 2,6-naphtylene group, and C* is an asymmetric carbon atom. Having a helical twisting power (HTP) of at least 9 and having a property that the helical pitch induced decreases with an increase in temperature, the optically active compound of the present invention has an excellent value as a chiral dopant for a nematic liquid crystal.Type: GrantFiled: June 25, 2002Date of Patent: November 23, 2004Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Yasumasa Norisue, Yasue Ogi, Masahiro Johno
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Publication number: 20040227128Abstract: The invention relates to new 3,4-alkylenedioxythiophenes which are substituted with mesogenic groups, if desired via a bridging group, and their polymeric derivatives (poly-(3,4-alkylenedioxythiophenes)).Type: ApplicationFiled: January 21, 2004Publication date: November 18, 2004Inventors: Knud Reuter, Alexander Karbach, Helmut Ritter, Noelle Wrubbel
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Patent number: 6818260Abstract: The invention relates to new thienothiophene derivatives, their use as semiconductors or charge transport materials, in optical, electrooptical or electronic devices like for example organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the thienothiophene derivatives.Type: GrantFiled: July 9, 2002Date of Patent: November 16, 2004Assignee: Merck Patent GmbHInventors: Louise Farrand, Marcus Thompson, Mark Giles, Martin Heeney, Steven Tierney, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Publication number: 20040222403Abstract: A compound represented by formula (1) or (2) and a polymer obtained by polymerizing the compound are provided: 1Type: ApplicationFiled: January 5, 2004Publication date: November 11, 2004Inventors: Yasuyuki Sasada, Kazuhiko Saigusa
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Patent number: 6811832Abstract: Compounds of the formula (I): in which X1=H or F, X2=H or F, and Y=Cl, Br or I, are prepared by reacting, in a solvent or solvent mixture at a temperature below −60° C., a halobenzene of the formula (II) with an organic lithium compound and then with a formyl equivalent of the formula (III): and may be used as starting materials for preparing agrochemicals, electronic materials and pharmaceuticals.Type: GrantFiled: May 10, 2001Date of Patent: November 2, 2004Assignee: Clariant GmbHInventors: Rainer Wingen, Wolfgang Schmidt
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Patent number: 6808762Abstract: The present invention relates to oxabicyclooctanes of the general formula I. in which R1, R2, A1, A2, A3, A4, L1, L2, n1, n2 and n3 have the meanings specified in claim 1, and to their use in liquid-crystalline media.Type: GrantFiled: October 1, 2002Date of Patent: October 26, 2004Assignee: Merck Patent GmbHInventors: Matthias Bremer, Michael Heckmeier, Melanie Klasen-Memmer, Harald Lannert
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Patent number: 6805923Abstract: A liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, A, L1, L2 and Y are as defined herein are suitable for use in liquid crystal displays such as MLC, TN or STN displays.Type: GrantFiled: March 28, 2003Date of Patent: October 19, 2004Assignee: Merck Patentgesellschaft MitInventors: Michael Heckmeier, Brigitte Schuler, Peer Kirsch, Eike Poetsch
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Patent number: 6805922Abstract: Conjugated mono-, oligo- and polyalkylidenefluorenes are suitable for use as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors, electroluminescent, photovoltaic and sensor devices.Type: GrantFiled: August 19, 2002Date of Patent: October 19, 2004Assignee: Merck Patent GmbHInventors: Martin Heeney, Steven Tierney, Mark Giles, Louise Diane Farrand, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6805817Abstract: An electric field activated molecular system, preferably bi-stable, configured within an electric field generated by a pair of electrodes is provided for use, e.g., as electronic ink or other visual displays. The molecular system has an electric field induced band gap change that occurs via a change (reversible or irreversible) of the extent of the electron conjugation via chemical bonding change to change the band gap, wherein in a first state, there is substantial conjugation throughout the molecular system, resulting in a relatively smaller band gap, and wherein in a second state, the substantial conjugation is destroyed, resulting in a relatively larger band gap. The changing of substantial conjugation may be accomplished in one of the following ways: (1) charge separation or recombination accompanied by increasing or decreasing electron localization in the molecule; or (2) change of substantial conjugation via charge separation or recombination and&pgr;-bond breaking or making.Type: GrantFiled: August 17, 2001Date of Patent: October 19, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Xiao-An Zhang, Alexandre Bratkovski, Yong Chen, R. Stanley Williams, Kent D. Vincent
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Patent number: 6800220Abstract: The present invention discloses an optically active polyester comprising at least constituent units represented by the general formula (I) and the general formula (II): wherein Ar1 and Ar2 each independently represents a bivalent aromatic group or a bivalent heteroaromatic group, and X1 and X2 each independently represents a hydrogen atom or an electron-withdrawing group, wherein A represents a bivalent substituent.Type: GrantFiled: May 14, 2002Date of Patent: October 5, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Yumoto, Mitsuyoshi Ichihashi, Kouya Kawabata
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Patent number: 6793984Abstract: The invention relates to liquid-crystalline (dihydro)phenanthrene derivatives of the formula I in which R, G, A1, Z1, m, L1, L2, L3, L4, L5 and Y are as defined in claim 1, and to liquid-crystalline media comprising at least one (dihydro)phenanthrene derivative of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.Type: GrantFiled: June 7, 2002Date of Patent: September 21, 2004Assignee: Merck Patent Beschraenkter HaftungInventors: Matthias Bremer, Detlef Pauluth, Michael Heckmeier, Hans-Rolf Dübal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
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Patent number: 6790489Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of negative dielectric anisotropy which comprises at least one compound of the formula I in which R11, R12, A1, Z1, ring A and m are as defined in claim 1, and to the use thereof for an active matrix display based on the ECB or IPS effect.Type: GrantFiled: September 16, 2003Date of Patent: September 14, 2004Assignee: Merck Patent GmbHInventors: Melanie Klasen-Memmer, Eike Poetsch, Volker Reiffenrath
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Publication number: 20040173773Abstract: A novel liquid crystalline compound by the formula:Type: ApplicationFiled: March 16, 2004Publication date: September 9, 2004Applicant: Nippon Oil CorporationInventors: Takuya Matsumoto, Hitoshi Mazaki
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Patent number: 6783812Abstract: Compounds useful as components of LC and FLC compositions which in turn are useful in the manufacture of optical devices. Compounds of this invention have a silane tail, which can contain more than one Si. Compounds of this invention can include those with disilane tails. The invention provides LC compositions containing one or more of the silanes of this invention. Addition of one or more of the compounds of this invention to LC compositions can result in significant improvement in optical or LC properties. In particular, the compounds of this invention can significantly lower the melting point, freezing point or both of an LC composition resulting in significant improvement in device stability.Type: GrantFiled: January 3, 2001Date of Patent: August 31, 2004Assignee: Displaytech, Inc.Inventors: Michael Wand, Neil Gough, Kundalika More, William N. Thurmes, Xin-Hua Chen
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Publication number: 20040164272Abstract: A mesogenic, crosslinkable mixture comprising at least one polymerisable liquid crystal and at least one polymerisable dichroic dye of the general formula (I) wherein A represents a dichroic residue exhibiting at least partial absorption in the visible region >400 nm: n1, n2, n3, n4 signifies 0 or 1 whereby the sum of n1, n2, n3, n4 is >0, and B1 to B4 represent a group of substructure II wherein the broken line symbolizes the linkage to said dichroic residue.Type: ApplicationFiled: April 8, 2004Publication date: August 26, 2004Inventors: Richard Buchecker, Zoubair M. Cherkaoui, Thomas Peglow, Franco Moia
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Patent number: 6780477Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, a, b and c are as defined in claim 1, and to liquid-crystalline media comprising at least compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.Type: GrantFiled: June 12, 2003Date of Patent: August 24, 2004Assignee: Merck Patent GmbHInventors: Peer Kirsch, Detlef Pauluth, Joachim Krause, Michael Heckmeier, Georg Lüssem, Dagmar Klement
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Publication number: 20040140450Abstract: Liquid crystalline polymer having repeat units derived from 4,4′-biphenol, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and 4-hydroxybenzoic acid in a limited compositional range have melting points of 400° C. or more, and are useful for molded articles and for films, particularly for uses where good high temperature resistance is needed.Type: ApplicationFiled: December 2, 2003Publication date: July 22, 2004Inventors: Marion G. Waggoner, Michael Robert Samuels
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Publication number: 20040142116Abstract: A retardation plate having a high film strength and having an optical property is provided by using a biaxial liquid crystal compound, in which the direction having a minimum refractive index of the optically anisotropic thin layer almost coincides with the normal direction in the film plane of the retardation plate, and the retardation plate comprises a transparent support and at least one optically anisotropic layer containing a liquid crystal compound capable of expressing a biaxial liquid crystal phase, wherein the liquid crystal compound is a polymerizable compound and/or a polymer compound.Type: ApplicationFiled: January 9, 2004Publication date: July 22, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Hideyuki Nishikawa, Atsuhiro Ohkawa
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Liquid-crystalline composition for printing inks, coatings and counterfeit-proof marking of articles
Publication number: 20040140451Abstract: The present invention relates to a liquid-crystalline composition which comprises, as componentsType: ApplicationFiled: December 24, 2003Publication date: July 22, 2004Applicant: BASF Drucksysteme GmbHInventors: Frank Meyer, Hiroki Ishida, Peter Schuhmacher, Horst Neumann