Including Fused Or Bridged Rings Patents (Class 252/299.62)
  • Patent number: 8465672
    Abstract: The invention relates to mesogenic tetrahydropyran compounds having at least four rings, of the formula I in which R1, A1, A2, X1, L1, L2, m and n have the meanings indicated in Claim 1, and to a process for the preparation thereof, to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one compound of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: June 18, 2013
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Markus Czanta, Atsutaka Manabe
  • Patent number: 8465674
    Abstract: A compound represented by the formula (1) is provided. In the formula (1), for example, R1 and R2 are alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; the ring A and the ring B are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond and Z3 is —CH2O— or —OCH2—; Y1 and Y2 are halogen, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 or —OCH2F; and m and n is 0, 1 or 2, p is 1 or 2, and the sum of m, n and p is 1, 2 or 3.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: June 18, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Tokifumi Masukawa
  • Patent number: 8460577
    Abstract: The invention provides a compound represented by formula (1). In the formula (1), R1 is hydrogen, methyl or ethyl; X1 is a single bond, —O— or —OCO—; X2 is a single bond, —O—, —COO— or —OCO—; A1 and A2 are each independently a divalent aromatic ring or a divalent cyclohexane ring, and in these rings, arbitrary hydrogen may be replaced by halogen, alkyl having 1 to 3 carbons or halogenated alkyl having 1 to 3 carbons; Z1 is independently a single bond, —O—, —S—, —COO—, —OCO—, —CH2O—, —OCH2—, —CH?CH—COO—, —OCO—CH?CH—, —CH2CH2—COO—, —OCO—CH2CH2—, —CON(R)— or —N(R)CO—; R is hydrogen or methyl; Y is a terpenoid residue or a steroid residue; m is an integer from 0 to 20; and n is an integer from 0 to 3.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: June 11, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Mayumi Tanabe, Yoshiharu Hirai
  • Patent number: 8460576
    Abstract: Provided are a liquid crystal composition containing, as a first component, a polymerizable compound represented by general formula (I): and a liquid crystal display element using the liquid crystal composition.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: June 11, 2013
    Assignee: DIC Corporation
    Inventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
  • Patent number: 8455062
    Abstract: To provide a liquid crystal display panel that has high contrast and reduced display deficiency, a liquid crystal display panel of the present invention includes: a pair of substrates (1) and (2) facing each other; and a liquid crystal layer (3) sandwiched between the pair of substrates (1) and (2), the pair of substrates (1) and (2) being provided with a pair of respective alignment films (4) and (5) formed thereon and facing each other, the pair of alignment films (4) and (5) being provided with respective polymer films (6) and (7) formed thereon and each made of a monomer in the liquid crystal layer (3), the pair of alignment films (4) and (5) containing a macromolecular compound having a side chain containing a fluorine atom, the liquid crystal layer (3) containing a polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer films (6) and (7) each being made of the polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer fil
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: June 4, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Nakai, Masanobu Mizusaki, Youhei Nakanishi
  • Patent number: 8444877
    Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a terminal cyclopentene group, along with at least two other ring groups.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: May 21, 2013
    Assignee: VVI Bright China Ltd.
    Inventors: Xinhua Chen, R. Amaranatha Reddy
  • Publication number: 20130122274
    Abstract: A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a combination of flow modifiers is provided. More particularly, one of the flow modifiers is a hydroxy-functional compound that contains or more hydroxyl functional groups. Without intending to be limited by theory, it is believed that the hydroxyl functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. Aromatic dicarboxylic acids are also employed as a flow modifier in the thermoplastic composition. Again, without intending to be limited by theory, it is believed that such acids can combine smaller chains of the polymer together after they have been cut by hydroxy-functional compounds. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 16, 2013
    Applicant: TICONA LLC
    Inventor: Ticona LLC
  • Publication number: 20130119310
    Abstract: To provide a novel liquid crystal compound having general physical properties necessary for the compound, namely, stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a high clearing point, a good compatibility with other compounds, a large refractive index anisotropy, a large dielectric anisotropy and a small viscosity. The liquid crystal compound is provided as compound (1): wherein, for example, R1 is alkyl having 1 to 20 carbons; ring A1 and ring B1 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond, —CH2CH2—, —CH?CH— or —C?C—; L1 is fluorine; L2, Y1 and Y2 are hydrogen, fluorine or chlorine; and X1 is halogen, —C?N or alkyl having 1 to 10 carbons, and in the alkyl, arbitrary —CH2— may be replaced by —O— or —S—, and m is 1 and n is 0.
    Type: Application
    Filed: December 20, 2010
    Publication date: May 16, 2013
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventor: Hiroyuki Tanaka
  • Publication number: 20130119317
    Abstract: A method for forming a liquid crystalline thermoplastic composition is provided. The method comprises blending at least one thermotropic liquid crystalline polymer and a plurality of fibers within an extruder. The extruder contains at least one rotatable screw received within a barrel (e.g., cylindrical barrel) and defines a feed section and a melting section located downstream from the feed section along the length of the screw. Relatively long fibers are initially supplied to the feed section of the extruder, but at a location downstream from the liquid crystalline polymer so that the polymer is still in a solid state when it initially contacts the fibers. In this manner, the present inventors have discovered that the polymer can act as an abrasive agent for reducing the length of the fibers.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 16, 2013
    Applicant: TICONA LLC
    Inventor: Ticona LLC
  • Publication number: 20130122273
    Abstract: A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a flow modifier is provided. The flow modifier is an aromatic carboxylic acid that contains one or more carboxyl functional groups. Without intending to be limited by theory, it is believed that the functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. It is also believed that such acids can combine smaller chains of the polymer together after they have been cut during processing. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. As a result of the present invention, the melt viscosity of the thermoplastic composition is generally low enough so that it can readily flow into the cavity of a mold having small dimensions.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 16, 2013
    Applicant: TICONA LLC
    Inventor: TICONA LLC
  • Publication number: 20130122272
    Abstract: A thermoplastic composition that comprises a naphthenic-rich, thermotropic liquid crystalline polymer blended with a flow modifier is provided. The flow modifier is an aromatic carboxylic acid that contains or more carboxyl functional groups. Without intending to be limited by theory, it is believed that the functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. It is also believed that such acids can combine smaller chains of the polymer together after they have been cut during processing. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. As a result of the present invention, the melt viscosity of the thermoplastic composition is generally low enough so that it can readily flow into the cavity of a mold having small dimensions.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 16, 2013
    Applicant: TICONA LLC
    Inventor: Ticona LLC
  • Patent number: 8440271
    Abstract: Providing a liquid crystal composition satisfies at least one of characteristics like a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat or has a suitable balance regarding at least two of the characteristics. Providing an AM device has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific compound having large negative dielectric anisotropy as a first component, a specific three-ring compound having large optical anisotropy as a second component and a specific two-ring compound having low viscosity as a third component, and a liquid crystal display device contains the composition.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 14, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Masayuki Saito
  • Patent number: 8440101
    Abstract: Provided are a liquid crystal composition containing, as a first component, a polymerizable compound represented by general formula (I): R11—S11-L11-(M11-L12)m-M12-L13-(M13-L14)n-Z11??(I) and a liquid crystal display element using the liquid crystal composition.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: May 14, 2013
    Assignee: DIC Corporation
    Inventors: Takeshi Kuriyama, Shinichi Hirata, Shotaro Kawakami
  • Patent number: 8440914
    Abstract: A liquid crystalline thermoset oligomer or polymer including a structural unit of Chemical Formulae 1 and 2; and a functional group of Chemical Formula A,
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: May 14, 2013
    Assignees: Samsung Electronics Co., Ltd., Samsung Electro-Mechanics Co., Ltd., Samsung Fine Chemicals Co., Ltd.
    Inventors: Jae-Jun Lee, Kalinina Fedosya, Myung-Sup Jung
  • Publication number: 20130114010
    Abstract: The present invention relates to polymerisable mixtures and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type.
    Type: Application
    Filed: June 30, 2011
    Publication date: May 9, 2013
    Applicant: MERCK PATENT GMBH
    Inventors: Achim Goetz, Sven Christian Laut, Andreas Taugerbeck
  • Patent number: 8431039
    Abstract: The present invention relates to compounds represented by the following Formula Ia, in which each R1-R6 can in each case be independently selected from hydrogen or hydrocarbyl (e.g., methyl); R7 is a multivalent linking group, such as L1 is a divalent linking group, such as a bond or divalent optionally substituted hydrocarbyl; each L2 independently represents a flexible segment, such as divalent linear or branched C1-C25 alkyl; each L3 independently represents a rigid segment including, for example, optionally substituted phenylen-1,4-diyl groups; t is from 1 to 4; m and p are each independently from 0 to 4 for each t, provided that the sum of m and p is at least 1 for each t; and E can be hydrogen or optionally substituted hydrocarbyl. The present invention also relates to compositions, such as liquid crystal compositions, and articles, such as optical elements, that include the compound represented by Formula Ia.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: April 30, 2013
    Assignee: Transitions Optical, Inc.
    Inventors: Xiao-Man Dai, Ruisong Xu, Meng He, Anil Kumar, Rachael L. Yoest, Chenguang Li
  • Patent number: 8425800
    Abstract: Provided are a liquid crystal composition containing, as a first component, a polymerizable compound represented by general formula (I): (Z11)m11-M11-(L11-M12)n11-COO-(M13-L12)n12-M14-(Z12)m12??(I) and a liquid crystal display element using the liquid crystal composition.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: April 23, 2013
    Assignee: DIC Corporation
    Inventors: Shinichi Hirata, Takeshi Kuriyama, Shotaro Kawakami
  • Patent number: 8425988
    Abstract: The main aim of the invention is to provide a polymerizable compound that is excellent in the stability of a liquid crystal phase, a polymerizable liquid crystal composition, and an anisotropic polymer in which the optical anisotropy can be adjusted and a uniform orientation is excellent. An anisotropic polymer having a uniform orientation formed by polymerization of a paint film that was prepared by application of a polymerizable liquid crystal composition including a compound represented by formula (1) having a benzyl ester moiety in the minor axis direction of the molecule to a supporting substrate; wherein at least one of Ra is a polymerizable group, A is a divalent cyclic-structure group, B is phenyl that may have a substituent, Y and Z are a single bond or alkylene, and m and n are an integer from 0 to 5.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 23, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshiharu Hirai, Takashi Kato
  • Publication number: 20130093975
    Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type.
    Type: Application
    Filed: June 1, 2011
    Publication date: April 18, 2013
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Andreas Taugerbeck, Achim Goetz, Stephan Derow
  • Patent number: 8419973
    Abstract: A polymerizable liquid crystal composition is provided that can contains a mixture of polymerizable compounds containing a compound represented by the formula (1-1), a compound represented by the formula (2), a compound represented by the formula (3-1) and a compound represented by the formula (4), and a amine silane coupling agent. The composition can form a polymerizable liquid crystal layer exhibiting a uniform homeotropic alignment by coating the composition on a supporting substrate, independently from the kind of the supporting substrate without a special alignment film. Examples of each of the components are shown below, in which ring T represents triptycen-1,4-diyl.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: April 16, 2013
    Assignees: JNC Corporation, Chisso Petrochemical Corporation
    Inventor: Yoshiharu Hirai
  • Patent number: 8419972
    Abstract: A polymerizable liquid crystal composition is provided that is excellent in UV curing characteristics in the air and is excellent in orientation homogeneity, and a polymer film as a selective reflection film is provided that is obtained by orienting and polymerizing the composition on a supporting substrate. The liquid crystal composition contains a compound (1), a compound (2), a compound (3), a compound selected from a group of compounds represented by the formulae (4) to (6), and a surfactant. In the following formulae Y1 to Y4 and Y6 are each alkylene, A2, A3, A41, A42, A51, A52 and A6 are each a cyclic group, Z2 to Z4 and Z6 are each a bonding group, P4 and P6 are each an integer of from 0 to 3, R2, R31 and R32 are each hydrogen, halogen or alkyl, and Q1 and Q2 are each a polymerizable group.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: April 16, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshiharu Hirai, Kazumi Hagihara
  • Publication number: 20130087738
    Abstract: The present invention relates to an optical switch element, comprising a liquid-crystalline medium for the temperature-dependent regulation of radiant energy flow. The invention furthermore relates to the use of the optical switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterised in that it comprises 5-95% of a compound of the formula (I), in particular for use in the optical switch elements according to the invention.
    Type: Application
    Filed: May 4, 2011
    Publication date: April 11, 2013
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventor: Michael Junge
  • Publication number: 20130083284
    Abstract: The present invention relates to a switch element, which is thermo-responsive and which switches between a less transmissive state for radiant energy and a more transmissive state for radiant energy, and which comprises a liquid-crystalline medium. The invention furthermore relates to the use of the switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterised in that it comprises 5-60% of a compound of the formula (I), in particular for use in the switch elements according to the invention.
    Type: Application
    Filed: May 12, 2011
    Publication date: April 4, 2013
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventor: Michael Junge
  • Patent number: 8409673
    Abstract: A liquid crystal compound having a large refractive index anisotropy, a large dielectric anisotropy, and a low melting point, and a liquid crystal medium having a liquid crystal phase over a wide temperature range, a large refractive index anisotropy, a large dielectric anisotropy, and having an optically isotropic liquid crystal phase, are provided. The present invention is a liquid crystal compound having a chlorobenzene ring, and a liquid crystal medium characterized by containing the liquid crystal compound and a chiral reagent, and exhibiting an optically isotropic liquid crystal phase.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: April 2, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuhiro Haseba, Takafumi Kuninobu
  • Patent number: 8404317
    Abstract: The invention is to provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and heat, or a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal composition has a negative dielectric anisotropy and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific two-ring compound having a large optical anisotropy and a low viscosity as a second component, and a liquid crystal display device contains the composition.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 26, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Masayuki Saito, Norikatsu Hattori
  • Patent number: 8399073
    Abstract: The invention relates to a liquid-crystalline medium having negative dielectric anisotropy which comprises at least one compound of the formula I in which R1, R1* and a have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PS-VA, PALC, FFS or IPS effect.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 19, 2013
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Konstantin Schneider, Detlef Pauluth
  • Patent number: 8394294
    Abstract: The invention provides a liquid crystal compound which has stability to heat, light and so forth, a nematic phase in a wide temperature range, a small viscosity, a large optical anisotropy, and a suitable elastic constant K33, and further has a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. Moreover, the invention provides a liquid crystal composition comprising this liquid crystal compound and a liquid crystal display device containing this liquid crystal composition. A liquid crystal compound represented by formula (a): for example, R1 and R2 are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1 and ring A2 are 1,4-phenylene or trans-1,4-cyclohexylene; L1 and L2 are hydrogen or fluorine, and at least one of L1 and L2 is fluorine; and Z1 and Z2 are a single bond, —(CH2)2—, —CH?CH—, —CH2O— or —OCH2—.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: March 12, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Masahide Kobayashi
  • Patent number: 8394468
    Abstract: Provided is a polymerizable compound with large solubility in a liquid crystal composition and high reactivity irradiated by ultraviolet in the longer wavelength range. Provided is a liquid crystal composition that satisfies at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of a nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or that is suitably balanced between at least two of the characteristics.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: March 12, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Maiko Ito, Keiji Kimura, Norikatsu Hattori, Eriko Saegusa
  • Patent number: 8389073
    Abstract: The invention provides a liquid crystal compound that has a large negative dielectric anisotropy (??) and also has at least one of characteristics such as the stability to heat, light or the like, a high clearing point, a suitable refractive index anisotropy (?n), a large negative dielectric anisotropy (??) and an excellent compatibility with other liquid crystal compounds. An excellent effect in which especially the value of the dielectric anisotropy (??) is increased negatively is achieved by use of the compound having two moieties of 1) a tetrahydropyran ring and and thus the effect is utilized.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: March 5, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Kenji Hirata, Tokifumi Masukawa, Junichi Yamashita, Maiko Ito
  • Patent number: 8388861
    Abstract: A LC compound and a LC mixture are provided. The LC mixture includes a compound represented by (I) and at least one compound selected from a group consisting of compounds represented by (II) to (IV): in which X1 is F, —Cl, —CF3, or —OCF3; R, R11, and R12 are independently H, a C1-C15 alkyl group, or a C2-C15 alkenyl group; A1 is 1,4-phenylene; A11, A12, A13, and A14 are independently selected from a group consisting of 1,4-phenylene, 1,4-cyclohexylene, and 2,5-tetrahydropyranylene; at least one of A2, A3, and A4 is 2,5-indanylene, and the others are independently selected from a group consisting of 1,4-phenylene, 1,4-cyclohexylene, and 2,5-tetrahydropyranylene; L1 is —F2CO—; Z11, Z12, and Z13 are independently a single bond, —O—, —F2CO—, or —COO—; m is 1; n, o and p are independently 0, 1, 2 or 3, and n+o+p?3.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 5, 2013
    Inventors: Chun-Chih Wang, Wen-Chung Chu, Ren-Jie Chiou, Shi-Zhi You, Hong-Wei Zhang, Yu-Dong Tan
  • Patent number: 8388860
    Abstract: Isomannide-based compounds having chiral properties are provided, in addition to liquid crystal compositions and polymer networks derived therefrom.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: March 5, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Marc B Goldfinger, Kai Qi
  • Publication number: 20130048913
    Abstract: The invention is to provide a new liquid crystal compound having a high clearing point, a good compatibility with other compounds, a small viscosity, and a high stability to heat, light and so forth; compound (1) is provided: R1?CF2?nR2??(1) wherein, for example, R1 is alkyl having 4 to 10 carbons or —(CH2)2—CH?CH2, R2 is alkyl having 2 to 10 carbons, n is 8, and R1 and R2 are not allowed to be straight-chain alkyl having an identical number of carbons.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 28, 2013
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: Hiroyuki TANAKA, Sayaka FUJIMORI
  • Publication number: 20130048908
    Abstract: A thermotropic liquid crystalline polymer composition capable of exhibiting both a low melting temperature and good heat resistance without the use of conventional naphthenic acids is provided. The melting temperature may, for example, range from about 250° C. to about 400° C. Even at such low melting temperatures, the present inventors have surprisingly discovered that the ratio of the deflection temperature under load (“DTUL”), a measure of short term heat resistance, to the melting temperature may remain relatively high. The specific DTUL values may range from about 200° C. to about 300° C. The ability to form a polymer composition with the properties noted above may be achieved, at least in part, by the use of an aromatic amide oligomer.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 28, 2013
    Applicant: TICONA LLC
    Inventors: Steven D. Gray, Kamlesh P. Nair, Joseph J. Grenci
  • Publication number: 20130048914
    Abstract: A liquid crystalline polymer composition that contains a liquid crystalline polymer and an aromatic amide oligomer is provided. The oligomer can serve as a flow aid by altering intermolecular polymer chain interactions, thereby lowering the overall viscosity of the polymer matrix under shear. The oligomer is also not easily volatized or decomposed during compounding, molding, and/or use, which minimizes off-gassing and the formation of blisters that would otherwise impact the final mechanical properties of a part made from the polymer composition. While providing the benefits noted, the aromatic amide oligomer does not generally react with the polymer backbone of the liquid crystalline polymer to any appreciable extent so that the mechanical properties of the polymer are not adversely impacted.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 28, 2013
    Applicant: TICONA LLC
    Inventors: Kamlesh P. Nair, Joseph J. Grenci, Sayanti Basu, Steven D. Gray
  • Patent number: 8377331
    Abstract: A blue phase liquid crystal composition and a LC display using the composition. The liquid crystal composition includes a first class including a highly polar compound and a second class including a highly conjugated liquid crystal compound. The blue phase liquid crystal display device includes first and second substrates each with polarizer on the exterior surface and the blue phase liquid crystal composition sandwiched therebetween with and patterned electrodes on one of the substrates or both substrates. The patterned electrodes can be T-shaped, chevron or v-shaped, thin comb like shape and can also be flat or trapezoidal. The device outputs different light transmissions from the electrically controllable induced birefringence of the blue phase LC material for a low driving voltage, high transmittance blue phase liquid crystal display device.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: February 19, 2013
    Assignees: University of Central Florida Research Foundation, Inc., Chimei Innolux Corporation
    Inventors: Sebastian Gauza, Shin-Tson Wu, Zhibing Ge, Linghui Rao, Hsu-Kuan Hsu, Chao-Lung Chin
  • Patent number: 8366963
    Abstract: A liquid crystal compound is to be obtained that has stability to heat, light and so forth, a high clearing point, a suitable optical anisotropy, a large negative dielectric anisotropy, and excellent compatibility with other liquid crystal compounds. A liquid crystal composition containing the compound is also to be obtained that has a low viscosity, a suitable optical anisotropy, a suitable negative dielectric anisotropy, a low threshold voltage, a high maximum temperature of a nematic phase (phase transition temperature from a nematic phase to an isotropic phase), and a low minimum temperature of a nematic phase. A compound having a hydrocoumarin skeleton is synthesized, and a liquid crystal composition containing the compound is produced.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: February 5, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Mayumi Goto, Teruyo Sugiura, Norikatsu Hattori, Kouki Sagou
  • Publication number: 20130026413
    Abstract: The present invention provides a liquid-crystalline polymer composition comprising: 100 parts by weight of a liquid-crystalline polymer and 1-150 parts by weight of the total weight of talc particles (A) and talc particles (B), wherein talc particles (A) have an aspect ratio of 3.1-5.0 and a median particle diameter of 5-100 ?m; and talc particles (B) have an aspect ratio of 1.0-3.0 and a median particle diameter of 5-100 ?m; wherein the weight ratio of talc particles (A)/talc particles (B) is from 1/9 to 9/1. The liquid-crystalline polymer composition according to the present invention exhibits improved molding flowability without impairing mechanical properties.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 31, 2013
    Applicant: UENO FINE CHEMICALS INDUSTRY, LTD
    Inventors: Hiroto UCHIDA, Hitoshi TSUCHIYA
  • Patent number: 8361344
    Abstract: The subject is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of the nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics. The subject is also to provide the AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life, and so forth. The invention provides a liquid crystal composition having a negatively dielectric anisotropy containing a specific compound having a negatively large dielectric anisotropy as a first component, and a specific compound having a negatively large dielectric anisotropy as a second component, and provides a liquid crystal display device containing this composition.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: January 29, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Masayuki Saito
  • Patent number: 8361568
    Abstract: Disclosed are a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which contains at least one compound of formula IA and at least one compound of formulae IB, IC and/or ID and the use thereof for an active-matrix display, in particular based on the ECB, PALC, FFS or IPS effect.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: January 29, 2013
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer
  • Publication number: 20130023637
    Abstract: The present invention is to provide a novel polymerizable chiral compound (chiral agent) having high left-handed helical twisting power, a polymerizable liquid crystal composition comprising the polymerizable chiral compound and a polymerizable liquid crystal compound, a liquid crystal polymer, and an optically anisotropic body.
    Type: Application
    Filed: March 10, 2011
    Publication date: January 24, 2013
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kentaro Tamura, Kumi Okuyama
  • Patent number: 8357436
    Abstract: The subject is to provide a liquid crystal composition that satisfies at least one characteristic of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two characteristics thereof. The subject is to provide an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The invention provides a liquid crystal composition having a negative dielectric anisotropy that includes a specific compound having 1-pyran-2,5-dyil as a first component, and a specific compound having a negatively large dielectric anisotropy as a second component , and provides a liquid crystal display device containing the composition.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: January 22, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Masayuki Saito, Norikatsu Hattori
  • Patent number: 8349210
    Abstract: The present invention relates to compounds represented by the following Formula I, in which R1-R6 can each independently be selected from hydrogen or hydrocarbyl (e.g., methyl); L1 is a divalent linking group, such as a bond or —OC(O)—R8—C(O)O—, where R8 can be divalent hydrocarbyl (e.g., —CH2CH2—); each L2 independently represents a flexible segment, such as divalent linear or branched C1-C25 alkyl; each L3 independently represents a rigid segment including, for example, optionally substituted phenylen-1,4-diyl groups; t is from 1 to 4; m and p are each independently from 0 to 4 for each t, provided that the sum of m and p is at least 1 for each t; and E can be hydrogen or hydrocarbyl. The present invention also relates to compositions, such as liquid crystal compositions, and articles, such as optical elements, that include the compound represented by Formula I.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: January 8, 2013
    Assignee: Transitions Optical, Inc.
    Inventors: Ruisong Xu, Xiao-Man Dai, Anil Kumar, Meng He, Chenguang Li, Rachael L. Yoest
  • Patent number: 8349209
    Abstract: The invention provides a liquid crystal composition having an optically isotropic liquid crystal phase used in an element driven in a state of an optically isotropic liquid crystal phase, which comprises a compound 1 having the clearing point T1 and a compound 2 having the clearing point T2, and which has the clearing point Tx, wherein the liquid crystal composition comprises 10 to 80 wt % of compound 1 and 20 to 90 wt % of compound 2, and wherein the clearing point T1, the clearing point T2 and the clearing point Tx of the liquid crystal composition satisfy the following conditions: T1>T2 T1?Tx?100° C.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: January 8, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuhiro Haseba, Hirotsugu Kikuchi
  • Publication number: 20130003009
    Abstract: To provide a liquid crystal composition satisfying at least one characteristic such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat, or a liquid crystal composition having a suitable balance regarding at least two characteristics; an AM device having a short response time, a large voltage holding ratio and contrast ratio, a long service life and so forth; wherein the liquid crystal composition contains a specific compound having a polymerizable group as a first component, and may contain a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device contains the composition.
    Type: Application
    Filed: May 9, 2011
    Publication date: January 3, 2013
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: Yoshimasa Furusato, Eriko Kurihara
  • Patent number: 8343596
    Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics, wherein the liquid crystal composition has negative dielectric anisotropy and includes a specific compound having a large negative dielectric anisotropy as a first component, a specific compound containing a pyran ring and having a large negative dielectric anisotropy as a second component, a specific compound having a small viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component, and the liquid crystal display device contains this composition.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 1, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Norikatsu Hattori, Masayuki Saito
  • Publication number: 20120326084
    Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, ring A have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.
    Type: Application
    Filed: February 10, 2011
    Publication date: December 27, 2012
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Melanie Klasen-Memmer, Volker Reiffenrath, Konstantin Schneider, Andreas Waechtler, Elvira Montenegro
  • Publication number: 20120327357
    Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilised blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 27, 2012
    Applicant: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz
  • Patent number: 8337964
    Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a wide temperature range of nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, high stability to ultraviolet light and high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide a AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition having a negative dielectric anisotropy may include a two-ring compound having a large negative dielectric anisotropy and at least three fluorines or chlorines at the lateral positions as a first component; and a specific compound having a large negative dielectric anisotropy as a second component. The liquid crystal display device contains this composition.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: December 25, 2012
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yuji Yamashita, Yoshimasa Furusato
  • Patent number: 8337719
    Abstract: The present invention provides a resin composition containing a liquid crystalline polyester and a high dielectric material filler. The present invention also provides a molded article of the liquid crystalline polyester resin composition. The liquid crystalline polyester resin composition of the present invention comprises 50 to 80% by volume of a liquid crystalline polyester which has 40% by mol or more of a 2,6-naphthalenediyl group as an aromatic group, also has a flow initiation temperature of 280° C. or higher, and shows a melt tension of 1 g or more measured at a temperature higher than flow initiation temperature; and 20 to 50% by volume of a high dielectric material filler. The liquid crystalline polyester resin composition can be formed into composition pellets easily and stably by a strand method, and a molded article obtained from the liquid crystalline polyester resin composition is excellent in flexural strength and dielectric characteristics.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: December 25, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoya Hosoda, Tomoko Uehara, Satoshi Okamoto
  • Publication number: 20120313040
    Abstract: A coating liquid comprising: a lyotropic liquid crystalline compound having a ?-conjugated system planar skeleton moiety and one or plural nitrogen-containing heterocyclic cation moiety or nitrogen-containing heteroaromatic cation moiety bonded to the planar skeleton moiety; and a solvent, an optical anisotropic film obtained by applying the coating liquid on a developing surface to form a coated film and solidifying this coated film, and an image display device provided with the optical anisotropic film are disclosed.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventor: Hisanari ONOUCHI