Patents Assigned to Polatechno Co., Ltd.
  • Patent number: 8940059
    Abstract: Disclosed is an azo compound represented by the formula (1) below, a salt thereof, or a copper complex salt compound thereof. (In the formula, R1 and R2 independently represent a hydrogen atom, a sulfonic acid group, a lower alkyl group or a lower alkoxyl group; R3-R6 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; R7 represents a lower alkyl group or a lower alkoxyl group; and n represents 0 or 1.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: January 27, 2015
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Yuichi Sadamitsu, Takahiro Higeta
  • Publication number: 20140218666
    Abstract: [Object]A polarizing element and polarizing plate having improved optical properties and durability. [Solution]A polarizing element comprising a film containing a compound represented in the following formula (I) or a salt thereof and a polyvinyl alcohol-based resin having a degree of polymerization from 5,000 to 10,000 (wherein R1 to R4 each individually represent a hydrogen atom, a lower alkyl group, or a lower alkoxyl group; and n represents 1-3).
    Type: Application
    Filed: September 5, 2012
    Publication date: August 7, 2014
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Noriaki Mochizuki
  • Publication number: 20140218628
    Abstract: [Object] A polarizing element and polarizing plate having improved optical properties and durability.
    Type: Application
    Filed: September 5, 2012
    Publication date: August 7, 2014
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Noriaki Mochizuki
  • Publication number: 20140218797
    Abstract: [Object] A polarizing element and polarizing plate having improved optical properties and durability. [Solution] A polarizing element characterized in comprising a polyvinyl alcohol resin film adsorbing at least one dichromatic pigment that is a compound represented by formula (I) or a salt thereof as a free acid, and being stretched, wherein the polyvinyl alcohol resin has a degree of polymerization of 5,000 to 10,000: (wherein A represents a phenyl group or a naphthyl group having a substituent; R1-R6 each independently represent a hydrogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group, a sulfo group, or a lower alkoxy group having a sulfo group; X represents an amino group optionally having a substituent, a benzoylamino group optionally having a substituent, a phenylamino group optionally having a substituent, a phenylazo group optionally having a substituent, or a naphthotriazole group optionally having a substituent; and m represents 0 or 1).
    Type: Application
    Filed: September 5, 2012
    Publication date: August 7, 2014
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Noriaki Mochizuki
  • Patent number: 8771378
    Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: July 8, 2014
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Yuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno
  • Patent number: 8730580
    Abstract: A light diffusion cell for laser light where in a transparent cell in which a liquid can be sealed, a fine particle dispersion in which fine particles having an average particle size of 100 nm or more and 1.5 ?m or less are colloidally dispersed in a liquid medium transmitting light, a same light diffusion cell including a reflection mechanism recursively using reflection light of incident light, a laser light source device including the light diffusion cell and a semiconductor laser light source and an image display device including the light diffusion cell or the laser light source device, and the light diffusion cell significantly reduces or removes speckle noise of semiconductor laser light. In addition, the light diffusion cell has an easy constitution, occupies a smaller volume and can be easily incorporated in any type of image display device using laser light.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: May 20, 2014
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventor: Hideyoshi Fujisawa
  • Publication number: 20140126054
    Abstract: To provide a polarizing element having a good polarizing property, and having a property of no discoloration by a treatment solution or pH of an adhesive. Provided is a polarizing element that comprises a film of a polyvinyl alcohol resin or a derivative thereof containing a disazo pigment represented by Formula (1), and having been stretched by a factor of at least three from the initial length, in which the polarizing element has the lowest transmissivity at 565 to 700 nm in the transmissivity when two pieces of polarizing plates having the polarizing element are superimposed such that the absorption-axis directions orthogonally intersect.
    Type: Application
    Filed: May 22, 2012
    Publication date: May 8, 2014
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Noriaki Mochizuki, Takahiro Higeta, Takuto Nishiguchi
  • Publication number: 20140085721
    Abstract: To develop a polarizing element having a good, polarizing property, and also having a high durability without use of a raw material belonging to a specified, chemical substance such as dianisidine. Provided is a polarizing element that comprises a film of a polyvinyl alcohol resin or a derivative thereof containing dichromatic pigments, and having been stretched, in which at least one of the dichromatic pigments is an azo compound represented by Formula (1) or a salt thereof.
    Type: Application
    Filed: May 22, 2012
    Publication date: March 27, 2014
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Noriaki Mochizuki, Takahiro Higeta, Takuto Nishiguchi
  • Publication number: 20140087201
    Abstract: To develop a polarizing element having a good polarizing property that is a pigment having an excellent blue dye without use of a raw material belonging to a specified chemical substance such as dianisidine. Provided is a polarizing element that comprises a film of a polyvinyl alcohol resin or a derivative thereof containing dichromatic pigments, and having been stretched at a stretch ratio of at least three times, in which at least one of the dichromatic pigments is an azo compound represented by Formula (1) or a salt thereof, and the content of an azo compound represented by Formula (2) or a salt thereof is within 10% with respect to the total amount of the dichromatic pigments.
    Type: Application
    Filed: May 22, 2012
    Publication date: March 27, 2014
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Noriaki Mochizuki, Takahiro Higeta, Takuto Nishiguchi
  • Patent number: 8643809
    Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: February 4, 2014
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Yuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno
  • Publication number: 20140029099
    Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.
    Type: Application
    Filed: October 1, 2013
    Publication date: January 30, 2014
    Applicants: Polatechno Co., Ltd., Nippon Kayaku Kabushiki Kaisha
    Inventors: Yuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno
  • Publication number: 20130314786
    Abstract: The present invention relates to an azo compound represented by the following formula (1) [wherein, A represents a naphthyl group having a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents a benzoylamino group having a substituent, a phenylamine group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent] and a salt thereof. By using the azo compound or a salt thereof of the present invention, a neutral color polarizing plate and a color polarizing plate for a liquid crystal projector being excellent in polarization performance and durability and having less color leakage in a visible light region can be provided.
    Type: Application
    Filed: February 6, 2012
    Publication date: November 28, 2013
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Takahiro Higeta, Takuto Nishiguchi
  • Publication number: 20130302538
    Abstract: The present invention relates to an azo compound represented by the following formula (1), [wherein, A represents a phenyl group which may have a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents an amino group which may have a substituent, a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, a phenylazo group which may have a substituent, or a naphthotriazole group which may have a substituent] or/and a salt thereof and to a polarizing film and a polarizing plate which contain it.
    Type: Application
    Filed: February 6, 2012
    Publication date: November 14, 2013
    Applicants: POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Takahiro Higeta, Takuto Nishiguchi
  • Patent number: 8557394
    Abstract: A laminate for a laminated glass which is used as a head-up display (HUD) and is not deteriorated even if exposed to light, and with which a laminated glass having excellent impact resistance can be prepared, wherein an interlayer film for a laminated glass and a retardation element sandwiched between adhesive layers are laminated, the interlayer film for a laminated glass contains a thermoplastic resin and an ultraviolet absorber, the interlayer film for a laminated glass contains, as the ultraviolet absorber, a benzotriazole compound or a benzophenone compound, and at least one compound selected from the group consisting of a malonic ester compound, an oxanilide compound and a triazine compound.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: October 15, 2013
    Assignees: Sekisui Chemical Co., Ltd., Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Juichi Fukatani, Izumi Omoto, Seiko Ichikawa, Kouichi Tanaka, Mayu Kameda
  • Patent number: 8477268
    Abstract: Azo compounds represented by formula (1) (In the formula, R1 represents a lower alkoxy group with a sulfone group. R2-R5 each independently represents a hydrogen atom, lower alkyl group or lower alkoxy group. X is an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group. m represents 1 or 2 and n represents 0 or 1.) and salts thereof.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: July 2, 2013
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Takuto Nishiguchi, Hiroaki Ohno, Takahiro Higeta, Yuichi Sadamitsu
  • Publication number: 20130131233
    Abstract: A laminate for a laminated glass which is used as a head-up display (HUD) and is not deteriorated even if exposed to light, and with which a laminated glass having excellent impact resistance can be prepared, wherein an interlayer film for a laminated glass and a retardation element sandwiched between adhesive layers are laminated, the interlayer film for a laminated glass contains a thermoplastic resin and an ultraviolet absorber, the interlayer film for a laminated glass contains, as the ultraviolet absorber, a benzotriazole compound or a benzophenone compound, and at least one compound selected from the group consisting of a malonic ester compound, an oxanilide compound and a triazine compound.
    Type: Application
    Filed: January 2, 2013
    Publication date: May 23, 2013
    Applicants: SEKISUI CHEMICAL CO., LTD., POLATECHNO CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: SEKISUI CHEMICAL CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHA, POLATECHNO CO., LTD.
  • Patent number: 8389122
    Abstract: Disclosed is an azo compound represented by the formula (1) or (2) below, or a salt thereof. (In the formulae, A represents a substituted phenyl group or a naphthyl group having 1-3 sulfonic acid groups; X represents —N?N— or —NHCO—; R1-R4 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; m represents a number of 1-3; and n represents 0 or 1).
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: March 5, 2013
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Yuichi Sadamitsu, Hiroaki Ohno, Takahiro Higeta
  • Patent number: 8389124
    Abstract: Disclosed is an azo compound represented by the formula (1) or (2) below, or a salt thereof. (In the formulae, A represents a substituted phenyl group or a naphthyl group having 1-3 sulfonic acid groups; X represents —N?N— or —NHCO—; R1-R4 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; m represents a number of 1-3; and n represents 0 or 1.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: March 5, 2013
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Yuichi Sadamitsu, Hiroaki Ohno, Takahiro Higeta
  • Patent number: 8367216
    Abstract: A laminate for a laminated glass which is used as a head-up displays (HUD) and is not deteriorated even if exposed to light, and with which a laminated glass having excellent impact resistance can be prepared, wherein an interlayer film for a laminated glass and a retardation element sandwiched between adhesive layers are laminated, the interlayer film for a laminated glass contains a thermoplastic resin and an ultraviolet absorber, the interlayer film for a laminated glass contains, as the ultraviolet absorber, a benzotriazole compound or a benzophenone compound, and at least one compound selected from the group consisting of a malonic ester compound, an oxanilide compound and a triazine compound.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: February 5, 2013
    Assignees: Sekisui Chemical Co., Ltd., Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Juichi Fukatani, Izumi Omoto, Seiko Ichikawa, Kouichi Tanaka, Mayu Kameda
  • Patent number: 8232375
    Abstract: Disclosed is an azo compound represented by the formula (1) or (2) or a salt thereof. The azo compound or the salt thereof has an excellent light-polarizing property, and is extremely useful as a dichroic dye for use in a polarizing plate that shows less color leakage in a visible light range or a polarizing plate for a liquid crystal projector comprising the aforementioned polarizing plate. (1) (2) wherein R1 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a sulfonate group or a carboxyl group; R2 to R5 independently represent a hydrogen atom, a lower alkyl group, a lower alkoxy group or an acetylamino group; X represents a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, a phenylazo group which may have a substituent, or a naphthotriazole group which may have a substituent; m represents a numeral number of 1 or 2; and n represents a numeral number of 0 or 1.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: July 31, 2012
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Takahiro Higeta, Hiroaki Ohno, Yuichi Sadamitsu