Patents by Inventor Junji Momoda

Junji Momoda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8440267
    Abstract: A process for efficiently forming a thick coating layer having a uniform thickness on the surface of a base material having a curved surface. The process comprises the steps of forming a coating film having a predetermined thickness by applying a coating agent containing a polymerizable monomer on the curved surface of a base material, and then curing the coating film in an atmosphere of an oxygen concentration of not more than 500 ppm by photo-polymerization while substantially maintaining the uniformity of the thickness of the coating film. Preferably, the photo-polymerization of the coating film is carried out while rotating the base material at a rotational speed of from 20 to 1500 rpm.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: May 14, 2013
    Assignee: Tokuyama Corporation
    Inventors: Katsuhiro Mori, Junji Momoda, Naoto Takahashi
  • Patent number: 8409670
    Abstract: A method of producing a laminate comprising preparing a substrate having curved surfaces; applying a photopolymerizable and curable composition containing a photochromic compound and a phosphorus-containing photopolymerization initiator onto the curved surfaces of the base member; and curing the photopolymerizable and curable composition by the irradiation with an active energy ray having a relative intensity profile of 0 to 5% of wavelength components of not shorter than 200 nm but shorter than 300 nm, 25 to 75% of wavelength components of not shorter than 300 nm but shorter than 400 nm and 25 to 75% of wavelength components of not shorter than 400 nm but not longer than 500 nm while maintaining the substrate at not higher than 100° C.
    Type: Grant
    Filed: May 26, 2003
    Date of Patent: April 2, 2013
    Assignee: Tokuyama Corporation
    Inventors: Katsuhiro Mori, Hironobu Nagoh, Junji Momoda, Shinobu Izumi
  • Publication number: 20130015416
    Abstract: A photochromic curable composition comprising 100 parts by mass of polymerizable monomers which include 70 to 100 mass % of polymerizable monomers having two to four (meth)acrylic groups and 0 to 30 mass % of a polymerizable monomer having one (meth)acrylic group and 0.01 to 20 parts by mass of a photochromic compound, wherein the number of moles of the methacrylic group existent in the polymerizable monomer composition is 3 to 7 times the number of moles of the acrylic group. This composition can provide a lens having a photochromic coating which exhibits excellent photochromic properties, comprises a hard coat layer having sufficiently high adhesion and scratch resistance and has no delay in fading and has excellent storage stability.
    Type: Application
    Filed: March 28, 2011
    Publication date: January 17, 2013
    Applicant: TOKUYAMA CORPORATION
    Inventors: Junji Takenaka, Junji Momoda
  • Patent number: 8308996
    Abstract: A photochromic chromene compound which develops a color of a neutral tint, has high color optical density, a high fading speed and high durability, and has an indeno(2,1-f)naphtho(1,2-b)pyran structure represented by the following formula as the basic skeleton, wherein a sulfur-containing substituent selected from thiol group, alkylthio group, alkoxyalkylthio group, haloalkylthio group, cycloalkylthio group, arylthio group and heteroarylthio group is bonded to the 6-position and/or 7-position carbon atom(s).
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: November 13, 2012
    Assignee: Tokuyama Corporation
    Inventors: Toshiaki Takahashi, Junji Takenaka, Junji Momoda, Kazuhiro Teranishi
  • Publication number: 20120228567
    Abstract: A process of producing a urethane (meth)acrylate monomer having a low acid value and a low content of a hardly soluble high-molecular weight impurity which is crosslinked high-dimensionally, comprising the steps of: (1) contacting a first solution containing a urethane (meth)acrylate monomer having an acid value of more than 0.2 mgKOH/g and an organic solvent to a water-containing adsorbent capable of adsorbing an acid component to obtain a second solution containing a urethane (meth)acrylate monomer having an acid value of not more than 0.2 mgKOH/g, the organic solvent and more than 5,000 ppm (mass) of water based on the urethane (meth)acrylate monomer; (2) contacting the second solution to a dehydrating agent to obtain a third solution containing not more than 5,000 ppm (mass) of water based on the urethane (meth)acrylate monomer; and (3) removing the organic solvent from the third solution.
    Type: Application
    Filed: November 16, 2010
    Publication date: September 13, 2012
    Inventors: Shinobu Izumi, Mitsuyoshi Sando, Junji Takenaka, Junji Momoda
  • Publication number: 20120170098
    Abstract: A photochromic chromene compound having an indeno(2,1-f)naphtho(1,2-b)pyran structure as its basic skeleton, an aryl group or a heteroaryl group at the 6-position carbon atom of the structure and an electron donor group having a Hammett constant ?p of not more than ?0.1 at the 7-position carbon atom.
    Type: Application
    Filed: September 15, 2010
    Publication date: July 5, 2012
    Inventors: Toshiaki Takahashi, Junji Takenaka, Junji Momoda, Mitsuyoshi Sando, Kazuhiro Teranishi
  • Publication number: 20120121934
    Abstract: A photochromic chromene compound which develops a color of a neutral tint, has high color optical density, a high fading speed and high durability, and has an indeno(2,1-f)naphtho(1,2-b)pyran structure represented by the following formula as the basic skeleton, wherein a sulfur-containing substituent selected from thiol group, alkylthio group, alkoxyalkylthio group, haloalkylthio group, cycloalkylthio group, arylthio group and heteroarylthio group is bonded to the 6-position and/or 7-position carbon atom(s).
    Type: Application
    Filed: August 4, 2010
    Publication date: May 17, 2012
    Inventors: Toshiaki Takahashi, Junji Takenaka, Junji Momoda, Kazuhiro Teranishi
  • Patent number: 8012588
    Abstract: A laminated product has a multilayer structure comprising an optical base and a cured polyurethane resin layer formed thereon from a moisture-curable polyurethane resin and/or a precursor therefor. The polyurethane resin layer is formed by applying a coating fluid comprising a moisture-curable polyurethane resin and/or precursor therefor and a solvent having a boiling point of 70° C. or higher and a solubility parameter of 8 or larger. Also provided is a coating material comprising a radical-polymerizable monomer ingredient, a silicone or fluorochemical surfactant, and a photochromic compound. In producing a photochromic optical article, excellent adhesion between a base and a photochromic layer is attained.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: September 6, 2011
    Assignee: Tokuyama Corporation
    Inventors: Shinobu Izumi, Junji Momoda
  • Patent number: 8012596
    Abstract: A polymerization curable composition comprising a specific polyfunctional polymerizable monomer having a hard molecular structure with an L-scale Rockwell hardness of its homopolymer of 60 or more, a specific polyfunctional polymerizable monomer and a photochromic compound, a photochromic lens substrate composed of a cured product of the polymerization curable composition, and a lens comprising the photochromic lens substrate. The substrate and lens show excellent photochromic properties such as high color development density and high fading rate, and the cured product has excellent substrate properties such as hardness, heat resistance and impact resistance as well as strength (toughness) that allows for its use in rimless spectacles.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: September 6, 2011
    Assignee: Tokuyama Corporation
    Inventors: Junji Takenaka, Hironobu Nagoh, Junji Momoda
  • Patent number: 7951445
    Abstract: A photochromic optical article comprising an optical substrate having a photochromic layer which is formed on at least one surface thereof and contains a photochromic compound is dispersed in a resin, and a thin metal oxide layer formed on the photochromic layer, wherein an indenonaphthopyran compound is used as the photochromic compound, the photochromic layer having a thickness of 30 to 50 ?m, and the thin metal oxide layer has a thickness of 0.01 to 10 ?m. The photochromic optical article has excellent photochromic properties, effectively suppresses a decrease in the photochromic properties caused by deterioration due to oxidation and features very excellent photochromic light resistance.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: May 31, 2011
    Assignee: Tokuyama Corporation
    Inventors: Shinobu Izumi, Junji Momoda, Hironobu Nagoh, Nobumasa Kuwashima
  • Patent number: 7763693
    Abstract: A curable composition comprising (1) 0.1 to 20 parts by weight of a silicon compound having a silanol group or a functional group for forming a silanol group upon hydrolysis and no radically polymerizable group, such as ?-glycidoxypropyltrimethoxysilane, (2) 100 parts by weight of radically polymerizable monomers and (3) 0.01 to 20 parts by weight of a photochromic compound, wherein the radically polymerizable monomers include a radically polymerizable monomer having an epoxy group in the molecule, such as glycidyl methacrylate. This curable composition is capable of forming a photochromic coating layer which shows excellent photochromic properties such as high color development density and fast fading rate, is free from the dissolution of the photochromic compound, exhibits high adhesion to a substrate through a simple pre-treatment and has excellent hard coating applicability.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: July 27, 2010
    Assignee: Tokuyama Corporation
    Inventors: Hironobu Nagoh, Junji Momoda, Katsuhiro Mori
  • Patent number: 7521004
    Abstract: A chromene compound of this invention, as shown in the following formula: characterized by having an indeno(2,1-f)naphtho(1,2-b)pyran structure as a basic structure, and having a substituent which is a substituted or unsubstituted aryl group such as methoxyphenyl group, or a substituted or unsubsterituted heteroaryl group such as thienyl group bonding to a carbon atom at the seventh position of the indeno(2,1-f)naphtho(1,2-b)pyran structure. The photochromic compound exhibits a color tone of a neutral tint when it develops a color, features a high color-developing sensitivity and a high fading rate, and has a good photochromic resistance.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: April 21, 2009
    Assignee: Tokuyama Corporation
    Inventors: Junji Momoda, Yuichiro Kawabata, Nobuyuki Tanaka, Arihiro Iwata
  • Patent number: 7514197
    Abstract: The resist according to the present invention includes any one of tetrachloromethyl tetramethoxycalix [4] arene and trichloromethyl tetramethoxycalix [4] arene. The resist including such kind of components is soluble in the solvent having less effect to worsen a working environment, namely, ethyl lactate (EL), propylene glycol monomethyl ether (PGME), propylene glycol monomethyl ether acetate (PGMEA), ethyl propionate, n-butyl acetate and 2-heptanone. It can be developed by tetra-methyl ammonium hydroxide in addition to the above mentioned solvent. By exposing this resist by electronic ray, high resolution of 8 nm is attained, and by using this resist as a mask, various materials can be formed into a hyperfine shape. According to such kind of resist, a photosensitive resist material which has high resolution and solvable to solvents having less effect to worsen the working environment and can be developed by the solvents, a exposure method using it, and a hyperfine processing method using it are provided.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: April 7, 2009
    Assignees: NEC Corporation, Tokuyama Corporation
    Inventors: Yukinori Ochiai, Masahiko Ishida, Junichi Fujita, Takashi Ogura, Junji Momoda, Eiji Oshima
  • Publication number: 20080286583
    Abstract: A process for producing a composition comprising (A) a metal oxide sol containing an amine compound, such as diisopropylamine, (B) a polycondensable silicon compound having an epoxy group, such as ?-glycidoxypropyltrimethoxysilane, and (C) a curing catalyst such as tris(2,4-pentanedionato)aluminum (III), the process comprising the steps of: mixing the component (A) with the component (B) at a temperature of 10° C. or higher and lower than 40° C. for 6 hours or longer; and mixing the obtained mixture with the above component (C). There is provided a process for producing the coating composition to provide a hard coat which has excellent adhesion, scratch resistance, solvent resistance and weatherability when it is applied to the surface of a synthetic resin lens and is free from fine holes or depressions on the surface, particularly a hard coat having a high refractive index.
    Type: Application
    Filed: October 6, 2005
    Publication date: November 20, 2008
    Applicant: TOKUYAMA CORPORATION
    Inventors: Katsuhiro Mori, Junji Momoda
  • Patent number: 7441893
    Abstract: A layered product comprising an optical substrate having, on at least one surface thereof, a photochromic surface layer constituted by a resin in which a photochromic compound is dispersed, and an ultraviolet ray-absorbing film of a thickness of 0.1 to 100 ?m formed on the photochromic surface layer of the optical substrate, the ultraviolet ray-absorbing film having a transmission factor of not smaller than 50% for a ray of light of 360 nm and a transmission factor of not larger than 10% for a ray of light of 320 nm. The layered product features a very high photochromic light resistance without causing a drop in the color density while effectively preventing the oxidation and deterioration of the photochromic compound.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: October 28, 2008
    Assignee: Tokuyama Corporation
    Inventors: Junji Momoda, Shinobu Izumi, Naoto Takahashi
  • Patent number: 7442734
    Abstract: There is provided a coating composition which can be applied to a substrate such as a plastic lens so as to form a photochromic coating layer having good photochromic properties and excellent adhesion to the substrate on the surface of the substrate. This composition comprises, for example, as monomer components, 0.1 to 20 wt % of monomer having a group which produces a silanol group through hydrolysis such as ?-methacryloyloxypropyltrimethoxysilane and 0.1 to 50 wt % of monomer having at least one oxycarbonyl group in a molecule. The composition can further contain a maleimide compound as a monomer component and further desirably contains an amine compound.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: October 28, 2008
    Assignee: Tokuyama Corporation
    Inventors: Katsuhiro Mori, Junji Momoda
  • Publication number: 20080241372
    Abstract: A coating agent composition obtained by mixing fine inorganic oxide particles, a polymerizable alkoxysilane compound, a polymerizing catalyst, an acid aqueous solution and an organic solvent, and satisfying the following conditions (1) to (3): (1) the polymerizing catalyst is at least partly an acetylacetonato complex; (2) a ?-dicarbonyl compound (excluding acetylacetonato complex) having two carbonyl groups in the molecule via a carbon atom, is further contained as a catalyst stabilizer; and (3) the fine inorganic oxide particles and the alkoxysilane compound are contained in a total amount of 23 to 40% by mass.
    Type: Application
    Filed: March 14, 2005
    Publication date: October 2, 2008
    Applicant: Tokuyama Corporation
    Inventors: Noriaki Tahara, Junji Momoda, Katsuhiro Mori
  • Publication number: 20080226883
    Abstract: A photochromic optical article comprising an optical substrate having a photochromic layer which is formed on at least one surface thereof and contains a photochromic compound is dispersed in a resin, and a thin metal oxide layer formed on the photochromic layer, wherein an indenonaphthopyran compound is used as the photochromic compound, the photochromic layer having a thickness of 30 to 50 ?m, and the thin metal oxide layer has a thickness of 0.01 to 10 ?m. The photochromic optical article has excellent photochromic properties, effectively suppresses a decrease in the photochromic properties caused by deterioration due to oxidation and features very excellent photochromic light resistance.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 18, 2008
    Applicant: Tokuyama Corporation
    Inventors: Shinobu Izumi, Junji Momoda, Hironobu Nagoh, Nobumasa Kuwashima
  • Publication number: 20080058444
    Abstract: A polymerization curable composition prepared by blending specific amounts of a photochromic compound and a specific light stabilizer such as bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate with monomer components including a specific bifunctional monomer having a structure that two phenylene groups are bonded together by a specific group, such as 2,2-bis(4-methacryloyloxypolyethoxyphenyl)propane, a polyfunctional polymerizable monomer having a functionality of 3 or more such as trimethylolpropane trimethacrylate, and a monomer other than these in a specific ratio. The polymerization curable composition provides a cured product having excellent photochromic properties such as fast fading rate and sufficiently high drilling strength that allows for its use in rimless spectacles and has high long-term storage stability.
    Type: Application
    Filed: November 8, 2005
    Publication date: March 6, 2008
    Applicant: Tokuyama Corporation
    Inventors: Nobuyuki Tanaka, Junji Momoda
  • Publication number: 20070215844
    Abstract: A chromene compound of this invention, as shown in the following formula: characterized by having an indeno(2,1-f)naphtho(1,2-b)pyran structure as a basic structure, and having a substituent which is a substituted or unsubstituted aryl group such as methoxyphenyl group, or a substituted or unsubstituted heteroaryl group such as thienyl group bonding to a carbon atom at the seventh position of the indeno(2,1-f)naphtho(1,2-b)pyran structure. The photochromic compound exhibits a color tone of a neutral tint when it develops a color, features a high color-developing sensitivity and a high fading rate, and has a good photochromic resistance.
    Type: Application
    Filed: September 14, 2004
    Publication date: September 20, 2007
    Applicant: Tokuyama Corporation
    Inventors: Junji Momoda, Yuichiro Kawabata, Nobuyuki Tanaka, Arihiro Iwata