Polymer Derived From Material Having At Least One Acrylic Or Alkacrylic Group Or The Nitrile Or Amide Derivative Thereof (e.g., Acrylamide, Acrylate Ester, Etc.) Patents (Class 428/65.1)
  • Patent number: 10882283
    Abstract: A display film comprises a transparent glass layer including two or more co-planar glass layer segments and a thickness defined by a first major surface and a second major surface opposing the first major surface being less than 500 micrometers; interstitial polymer material separating adjacent segments; and transparent energy dissipation layer having a glass transition temperature of 27 degrees Celsius or less and a Tan Delta peak value of 0.5 or greater and being disposed on the first major surface.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: January 5, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joseph W. Woody, V, David S. Thompson, Steven D. Solomonson, John J. Stradinger, Ryan M. Braun, Joseph D. Rule, Peter D. Condo, Catherine A. Leatherdale, Michael A. Johnson
  • Patent number: 10732454
    Abstract: The laminated film includes a substrate film; and a cured layer obtained by curing a polymerizable composition includes a compound having a cyclic ether group, a polyfunctional (meth)acrylate compound having three or more (meth)acryloyl groups in one molecule, a radical polymerization initiator, and a cation polymerization initiator, in which an absorbance ratio P1/P2 in an infrared absorption spectrum of the cured layer is in a range of 4.40 to 15.00, and an absorbance ratio P2/P3 is in a range of 0.01 to 0.08, P1 is an absorbance at an absorption maximum peak in a wave number range of 3,650 to 3,200 cm?1, P2 is an absorbance at an absorption maximum peak in a wave number range of 800 to 770 cm?1, and P3 is an absorbance at an absorption maximum peak in a wave number range of 1,740 to 1,690 cm?1.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: August 4, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Masaaki Suzuki, Katsuyuki Takada
  • Patent number: 9829606
    Abstract: There is provided a method of manufacturing a hard coat film having a hard coat layer on at least one side of a transparent support, the method includes curing a hard coat layer forming composition containing (a) a compound having one alicyclic epoxy group and one ethylenically unsaturated double bond group in a molecule and having a molecular weight of 300 or less, (b) a compound having three or more ethylenically unsaturated double bond groups in a molecule, (c) a radical polymerization initiator, and (d) a cationic polymerization initiator in a specific amount.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 28, 2017
    Assignee: FUJIFILM CORPORATION
    Inventors: Masaaki Suzuki, Keigo Ueki, Taketo Otani, Katsuyuki Takada, Ryo Nakamura
  • Patent number: 9028941
    Abstract: A sheet for producing a multilayer optical recording medium comprises optical recording layers and adhesive layers laminated on one another, wherein the adhesive layer comprises an adhesive comprising a polymer as a main component, the polymer includes fluorine-containing monomer and/or silicon-containing monomer as a constituent monomer component, the adhesive layer has no domain structure or has a domain structure of 110 nm or less, a total content of the fluorine-containing monomer and the silicon-containing monomer is 10 to 100 mass % when a monomer total amount as the constituent monomer component in the polymer is 100 mass %. According to the sheet for producing a multilayer optical recording medium, a multilayer optical recording medium can be produced which can detect reflected light having sufficient intensity from the interface between the optical recording layer and the adhesive layer and which generates less scattered light in the adhesive layer and causes less noise.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: May 12, 2015
    Assignee: Lintec Corporation
    Inventors: Masaharu Ito, Seitaro Yamaguchi, Yuichi Kozone
  • Patent number: 8703264
    Abstract: Provided is an optical disc in which at least a light reflecting layer and a light transmitting layer that includes a cured film of an ultraviolet curable composition are stacked on a substrate, and information is reproduced by making a blue laser beam be incident on the optical disc from a side of the light transmitting layer, wherein an elastic modulus (25° C.) measured by indenting a Vickers indenter having a vertex angle of 136° under a load of 100 mN into a surface of the cured film of the ultraviolet curable composition is 1,500 MPa or less; and a loss modulus (E?) at 60° C. in a dynamic viscoelastic spectrum of the cured film measured at a frequency of 3.5 Hz is 10 MPa or less. Thus, warpage is reduced during curing and plastic deformation is less likely even under a load for a long period of time.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: April 22, 2014
    Assignee: DIC Corporation
    Inventors: Atsushi Oshio, Junji Yamaguchi, Daisuke Ito
  • Publication number: 20140087114
    Abstract: A sheet for producing a multilayer optical recording medium comprises optical recording layers and adhesive layers laminated on one another, wherein the adhesive layer comprises an adhesive comprising a polymer as a main component, the polymer includes fluorine-containing monomer and/or silicon-containing monomer as a constituent monomer component, the adhesive layer has no domain structure or has a domain structure with a size of of 110 nm or less, a total content of the fluorine-containing monomer and the silicon-containing monomer is 10 to 100 mass % when a monomer total amount as the constituent monomer component in the polymer is 100 mass %. According to the sheet for producing a multilayer optical recording medium, a multilayer optical recording medium can be produced which can detect reflected light having sufficient intensity from the interface between the optical recording layer and the adhesive layer and which generates less scattered light in the adhesive layer and causes less noise.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 27, 2014
    Applicant: LINTEC CORPORATION
    Inventors: Masaharu ITO, Seitaro YAMAGUCHI, Yuichi KOZONE
  • Publication number: 20140078878
    Abstract: The present invention provides a non-resonant two-photon absorption recording material containing a non-resonant polymer two-photon absorption compound, and the non-resonant two-photon absorption recording material wherein the main chain of the non-resonant polymer two-photon absorption compound contains at least one member selected from polystyrene, polyacrylate, polymethacrylate, polyester, polyurethane, polyether and polyimide, and also provides an optical information recording medium having a recording layer containing the recording material.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 20, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Hiroaki TSUYAMA, Masaomi MAKINO, Hidehiro MOCHIZUKI, Toshio SASAKI, Tatsuo MIKAMI
  • Patent number: 8409687
    Abstract: A UV-curable composition for optical discs contains a fluorine-containing UV-curable resin having a poly(perfluoroalkylene ether) chain and a UV-curable group. The fluorine-containing UV-curable resin exhibits good compatibility with the composition and satisfactorily localizes in and near a surface of a coating film. Thus, the composition can be used to form an outermost layer of an optical disc such that the droplet size of grease such as that constituting fingerprints adhering to the outermost layer is reduced and scattering of light having a short oscillation wavelength passing through the outermost layer is suppressed. Accordingly, an optical disc on and from which signals can be satisfactorily recorded and read is formed.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: April 2, 2013
    Assignee: DIC Corporation
    Inventors: Hirokazu Saito, Takeshi Isonaka, Hideya Suzuki, Youzou Yamashina, Shin Sasamoto, Jun Noguchi
  • Patent number: 8357773
    Abstract: The disclosure relates to a steam stripping process for producing purified polyimides, e.g., polyetherimide homopolymers and polyetherimide copolymers. The process can include contacting an initial polyimide with steam to remove a volatile species from the initial polyimide to produce a purified polyimide. The purified polyimide can have a weight average molecular weight of from 5,000 to 80,000 Daltons. The weight average molecular weight of the purified polyimide can be greater than or equal to 90% of the weight average molecular weight of the initial polyimide. The purified polyimide can have less than 44 ppm of a volatile species, having a molecular weight of less than 250 Daltons. The polyimide can have less than 10 ppm of a metal cation.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: January 22, 2013
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Robert R. Gallucci, Robert Hossan, Daniel F. Lowery
  • Patent number: 8334039
    Abstract: The present invention provides an ultraviolet-curable resin composition, comprising a silicone compound represented by the following formula (1): [Chemical Formula 1] (CH3)3Si—O-A-Si(CH3)3??(1) (wherein A represents a group in which n structural units represented by a chemical formula (2) and m structural units represented by a chemical formula (3) are bonded in a random form or block form, n is an integer ranging from 1 to 15, n/m is 1/5 to 1/20, and two structural units represented by the above chemical formulas (2) and (2), (2) and (3), (3) and (3) are not bonded by oxygen-oxygen bond and a photocurable compound that reacts with the silicone compound. The present invention also provides an optical information recording medium having a surface protective layer with an excellent spot prevention function and spot wipe-ability.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: December 18, 2012
    Assignee: DIC Corporation
    Inventors: Mayumi Aoki, Hirokazu Saito
  • Publication number: 20120246666
    Abstract: A pressure-sensitive adhesive sheet 1 for an optical data recording medium D1 from which a signal with a mark length shorter than the resolution limit of an optical system of a reproducing device is capable of being reproduced by reproduction light emitted during reproducing, the pressure-sensitive adhesive sheet 1 having an adhesive transparent resin layer 11 to be disposed on an data recording layer 3 of the optical data recording medium D1, the transparent resin layer 11 having a (meth)acrylate copolymer containing no acidic group as a main component, the transparent resin layer 11 having a storage elastic modulus at 23° C. of 1.5×105 Pa or less and a gel fraction of 68 wt % or more.
    Type: Application
    Filed: September 27, 2010
    Publication date: September 27, 2012
    Applicants: SHARP CORPORATION, LINTEC CORPORATION
    Inventors: Naoki Taya, Takehito Nakayama, Hideharu Tajima, Yasuhiro Harada, Masaki Yamamoto, Hirohisa Yamada
  • Patent number: 8247468
    Abstract: The present invention provides a composition for hard coat capable of forming a hard coat layer having the improved anti-staining property, anti-staining durability, scratch resistance, abrasion resistance, antistatic property and the like. A composition for hard coat comprising: an active energy ray-curable silicone-acrylic copolymer (A); an active energy ray-curable polyfunctional compound (B); and an electrically conductive material (C), wherein the active energy ray-curable silicone-acrylic copolymer (A) contains: a polysiloxane block (a-1), an acrylic block (a-2) containing an active energy ray-curable double bond group, and a fluoroalkyl group-containing acrylic block (a-3).
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: August 21, 2012
    Assignee: TDK Corporation
    Inventors: Kenji Yoneyama, Kazushi Tanaka, Hiroyuki Hashiguchi, Koichi Ueda
  • Patent number: 8192821
    Abstract: Disclosed is an ultraviolet-curable resin composition for multilayer optical discs, which contains (A) dioxane glycol di(meth)acrylate and/or tricyclodecane dimethylol di(meth)acrylate, and (B) a photopolymerization initiator.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: June 5, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Daisuke Kobayashi, Kiyohisa Tokuda, Masahiro Naito, Go Mizutani
  • Patent number: 8168690
    Abstract: A solvent-free photocurable resin composition is provided which can be applied to the surface of optical discs or the like to form a highly transparent protective film that can stably adhere to the surface and effectively protect the surface from scratches. The solvent-free photocurable resin composition contains a urethane(meth)acrylate oligomer, a trifunctional (meth)acrylic acid ester monomer, a photopolymerization initiator, and a dilution monomer. The dilution monomer contains a fluorine-based (meth)acrylic acid ester monomer having three or more fluorine atoms and a monofunctional or difunctional (meth)acrylic acid ester monomer in amounts of from 10 to 40 wt% and from 10 to 30 wt%, respectively.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: May 1, 2012
    Assignees: Sony Chemical & Information Device Corp., Sony Corp., Sony Disc & Digital Solutions Inc.
    Inventors: Kiichiro Oguni, Kozaburo Hayashi, Satoshi Yanagida, Hidetoshi Watanabe, Naoki Okawa
  • Publication number: 20120094054
    Abstract: A hybrid data disc, method and system of forming the disc are disclosed. The hybrid disc includes a first substrate structure bonded to a second substrate structure, and at least two data layers of different formats for access from different sides of the disc. One example provides the second substrate structure with a second substrate that has at least one curable material layer on each side of the second substrate, and the curable material has a property that results in shrinkage associated with curing of the material. Other examples provide a data disc with different stacking ring configurations, a thinner substrate and substrate structures of opposite curvature.
    Type: Application
    Filed: December 3, 2009
    Publication date: April 19, 2012
    Applicant: THOMSON LICENSING
    Inventors: John Matthew Town, Patrick J. Byrne, Alan Bruce Hamersley
  • Patent number: 8088467
    Abstract: Curable compositions are disclosed. Also disclosed are optical media comprising said curable compositions when cured and methods of making such optical media.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: January 3, 2012
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: Lujia Bu, Edward C. Greer, Georg R. Kestler, Alan I. Nakatani, Charles R. Szmanda
  • Patent number: 8071195
    Abstract: The present invention provides a multi-layered object having a hard coat layer capable of improving anti-staining property, anti-staining durability, scratch resistance, abrasion resistance and the like. A multi-layered object comprising a hard coat layer and a light transmitting layer, wherein the hard coat layer is formed from a composition for hard coat comprising: an active energy ray-curable silicone-acrylic copolymer (A); and an active energy ray-curable polyfunctional compound (B), and wherein the active energy ray-curable silicone-acrylic copolymer (A) contains: a polysiloxane block (a-1), an acrylic block (a-2) containing an active energy ray-curable double bond group and a fluoroalkyl group-containing acrylic block (a-3).
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: December 6, 2011
    Assignee: TDK Corporation
    Inventors: Kenji Yoneyama, Kazushi Tanaka, Hiroyuki Hashiguchi, Akira Yamamoto, Koichi Ueda
  • Publication number: 20110262678
    Abstract: An optical information recording medium includes a recording layer, wherein the recording layer includes a thermoplastic resin and inorganic oxide particles dispersed in the thermoplastic resin.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 27, 2011
    Applicant: SONY CORPORATION
    Inventors: Yo Ota, Takashi Iwamura
  • Publication number: 20110236618
    Abstract: An optical recording media includes a substrate, a cap layer opposite to the substrate, at least one first stacked recording structure, at least one second stacked recording structure, and a space layer. The first stacked recording structure including a first recording layer disposed between the substrate and the cap layer and a reflective layer disposed between the substrate and the first recording layer is disposed between the substrate and the cap layer. The second stacked recording structure including a second recording layer disposed between the substrate and the cap layer and an Nb2O5 interface layer disposed between the substrate and the second recording layer is disposed between the substrate and the cap layer. The spacer layer is disposed between the first and second stacked recording structures, the first stacked recording structures, and the second stacked recording structures. One of the first stacked recording structures is disposed directly on the substrate.
    Type: Application
    Filed: June 7, 2010
    Publication date: September 29, 2011
    Applicant: CMC MAGNETICS CORPORATION
    Inventors: Yi-Kai Huang, Kun-Long Li, Yung-Hui Hung, Cheng-Pi Lee
  • Patent number: 8017211
    Abstract: A composition, etc. are provided, which can enhance hardness and afford abrasion resistance even in a thin film as well as excellent antifouling property and durability of the antifouling property. An organic polymer, is provided, which comprises 5 to 30 weight percent of a radical polymerizable monomer having a perfluoroalkyl group, 0.01 to 5 weight percent of ?,?-dimercaptopolysiloxane, 5 to 40 weight percent of a radical polymerizable monomer having a cationic photo polymerizable epoxy group, and 25 to 75 weight percent of the other radical polymerizable monomer copolymerizable therewith, said organic polymer having a structure corresponding to a radical polymerizable copolymer of a mixture of the monomers in which a molar ratio of the mercapto group to the epoxy group is 0.0001 to 0.025, and/or a structure obtained by reacting the epoxy groups of the radical polymerizable copolymer with (meth) acrylic acid.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: September 13, 2011
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Makoto Terauchi
  • Patent number: 7955681
    Abstract: An optical article configured to transform from a pre-activated state of functionality to an activated state of functionality is provided. The optical article includes an optical data layer for storing data, wherein the data is read from the optical data layer in an activated state of functionality, and a material capable of undergoing a morphological transformation being disposed on the optical data layer and adapted to irreversibly alter from a first morphology to a second morphology upon interaction with the external stimulus to alter the state of functionality of the optical article from a pre-activated state to the activated state.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: June 7, 2011
    Assignee: NBCUniversal Media, LLC
    Inventors: Kasiraman Krishnan, Marc Brian Wisnudel, Ben Purushotam Patel, Lifeng Zhang
  • Publication number: 20110129636
    Abstract: The invention relates to a block copolymer comprising: at least one soft block A with a Tg of between ?55° C. and 0° C. and preferably between ?40° C. and ?1° C., and at least one block B comprising at least one photoactive monomer bearing a photoisomerizable chromophore. The photoactive monomer has the formula (I): in which: X denotes H or CH3—; G denotes —O—C(?O)—, —C(?O)—O—, a substituted or unsubstituted phenyl group, or —NR—C(?O)—, NR being linked to L and R being H or a C1-C10 alkyl group; L denotes a spacer group; CR denotes a photoisomerizable chromophore. The block copolymer makes it possible to obtain a 3D optical memory. The invention also relates to this 3D optical memory.
    Type: Application
    Filed: May 15, 2009
    Publication date: June 2, 2011
    Applicant: Arkema France
    Inventors: Christophe Le Crom, Sylvain Bourrigaud, Sylvie Cazaumayou
  • Publication number: 20110111162
    Abstract: A novel indolium compound of general formula (I) and an optical recording material containing the indolium compound. In formula (I), ring A is a benzene ring, etc.; ring B is a 5- or 6-membered heterocyclic ring; R1 is a group of general formula (II), etc.; R2 is an organic group having 1 to 30 carbon atoms, etc.; Y1 is an alkyl group having 1 to 10 carbon atoms, etc.; Z1 and Z2 are each, e.g., an alkyl group having 1 to 8 carbon atoms optionally substituted with a halogen atom and optionally interrupted by —O—, etc.; a is an integer of 0 to 6; b is an integer of 0 to 5; Anq? is a q-valent anion; q is 1 or 2; and p is a number necessary to neutralize an electric charge.
    Type: Application
    Filed: September 26, 2008
    Publication date: May 12, 2011
    Applicant: ADEKA CORPORATION
    Inventors: Toru Yano, Yohei Aoyama
  • Publication number: 20110052855
    Abstract: The present invention relates to an ultraviolet-curable resin composition for an optical disk containing a sulfur-containing compound (A) represented by the following formula (1): (wherein, R1 and R2 each dependently represent a hydrogen atom, a hydroxy group, an alkyloxy group, an alkyl group, an aryl group, a carboxy group, an alkylthio ether group or a halogen atom) a photopolymerizable compound (B) and a photopolymerization initiator (C), and an optical disk having a thin film of the cured product of said resin composition, particularly an optical disk having a reflective film comprising silver or a silver alloy; and said optical disk is prevented from changing the properties of its reflective film comprising silver or a silver alloy, and thus has a higher durability.
    Type: Application
    Filed: May 27, 2009
    Publication date: March 3, 2011
    Applicant: NIPPONKAYAKU KABUSHIKIKAISHA
    Inventors: Daisuke Kobayashi, Masahiro Naitou, Go Mizutani, Hitoshi Takahashi, Kiyohisa Tokuda
  • Patent number: 7883757
    Abstract: Disclosed is an ultraviolet-curable resin composition containing a polyurethane compound (A), a photopolymerization initiator (B), and an ethylenically unsaturated compound (C) other than the compound (A). The polyurethane compound (A) is obtained by reacting an epoxycarboxylate compound (c), which is obtained by reacting an epoxy compound (a) having two or more epoxy groups in a molecule with a monocarboxylic acid compound (b) having an ethylenically unsaturated group in a molecule, with a diisocyanate compound (d).
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: February 8, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Go Mizutani, Kiyohisa Tokuda, Masahiro Naitou, Hideaki Kametani, Kikuo Imazumi
  • Patent number: 7838097
    Abstract: A hardcoat agent composition comprising a fluorine-containing polyether compound (A) having a perfluoropolyether unit, urethane bond and active energy ray reactive group and a curable compound (B) having equal to or more than 2 active energy ray polymerizing groups in the molecule. An optical information medium having a film substance composed of single or multiple layers containing at least the recording layer 4 or the reflecting layer on the supporting substrate 20, the optical information medium wherein at least either the surface of the supporting substrate 20 or that of the above-mentioned film substance is formed by the hardcoat layer 8 containing a curable substance of the above-mentioned hardcoat agent composition.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: November 23, 2010
    Assignee: TDK Corporation
    Inventors: Naoki Hayashida, Rie Ihara, Hidetake Itoh, Kazushi Tanaka
  • Publication number: 20100279054
    Abstract: A recordable optical recording media is provided with an inorganic recording layer prepared by magnetic sputtering. The recording layer is a combination film including a primary component selected from cupper (Cu), silicon (Si), chromium (Cr) or the combination thereof. The purpose of recording data can be achieved by way of altering micro-structure of the recording layer after irradiating the recordable optical recording media by a laser beam.
    Type: Application
    Filed: March 1, 2010
    Publication date: November 4, 2010
    Inventors: Han-Feng Chang, Yuh-Rur Kuo, Yung-Hui Hung, Su-Hsuan Chang
  • Patent number: 7799404
    Abstract: A photo-curable transfer sheet having a photo-curable layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group. The photo-curable transfer sheet preferably has a light transmittance of not less than 70% in a wavelength rang of 380 to 420 nm. An optical information recording substrate and medium prepared by the sheet. The sheet easily and precisely enables transfer of unevenness of the surface of a stamper by pressing.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: September 21, 2010
    Assignee: Bridgestone Corporation
    Inventors: Hideki Kitano, Hidefumi Kotsubo, Takato Inamiya
  • Publication number: 20100221481
    Abstract: Optical information media that contain a data layer material that is substantially inert to oxidation and has a defined melting point range are disclosed. The inertness to oxidation and melting point range make the media particularly attractive for long-term information storage.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 2, 2010
    Applicant: BRIGHAM YOUNG UNIVERSITY
    Inventors: David E. Allred, Erik C. Bard, Robert C. Davis, Douglas P. Hansen, Matthew R. Linford, Barry M. Lunt, Mark O. Worthington
  • Patent number: 7781044
    Abstract: A recording layer including a novel organic compound for a high density optical recording medium is provided. The information may be recorded on the recording layer at a 2× speed or higher speed with a relatively lower writing power so that heat distribution of the recording layer in the irradiated area is not likely to become steep both in time and space. The organic compound incorporated in the recording layer has the following general chemical structural formula (I).
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: August 24, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Chia Li, An-Tse Lee, Chien-Liang Huang, Chung-Ta Cheng, Kuo-Chi Chiu, Tzuan-Ren Jeng
  • Publication number: 20100173115
    Abstract: An ultraviolet curable composition comprising a polyfunctional meth)acrylate having three or more (meth)acryloyl groups per molecule, a difunctional (meth)acrylate having two (meth)acryloyl groups per molecule, and a monofunctional (meth)acrylate having one (meth)acryloyl group per molecule, wherein the content of the polyfunctional (meth)acrylate in the (meth)acrylates contained in the ultraviolet curable composition is 30 to 70% by mass, the content of the monofunctional (meth)acrylate is 5 to 30% by mass, the total content of a difunctional (meth)acrylate having an alicyclic structure and a monofunctional (meth)acrylate having an alicyclic structure is 10 to 50% by mass, and the content of a methacrylate is 7% by mass or more exhibits good separation when separated from a stamp. A resultant cured film can be separated from a stamp made of a general-purpose resin while maintaining useful characteristics such as heat resistance and the like for an intermediate layer of an optical disc.
    Type: Application
    Filed: July 31, 2007
    Publication date: July 8, 2010
    Applicant: DIC CORPORATION
    Inventors: Takeshi Isonaka, Daisuke Ito
  • Publication number: 20100151179
    Abstract: An optical information recording medium (9) of the present invention is an optical information recording medium including: N information layers, where N is a natural number of 2 or more; and an intermediate layer for separating the N information layers optically from each other. With the N information layers being referred to as a first information layer (10) to an N-th information layer (7) sequentially from an optical beam incident side, a first information layer (10) corresponding to an L-th information layer included in the N information layers includes a recording layer (104) on which information can be recorded by irradiation with an optical beam, a reflective layer (108), and a transmittance adjusting layer (109) in this order from the optical beam incident side, where L is an at least one natural number that satisfies 1?L?N?1. The transmittance adjusting layer (109) contains tungsten (W) and oxygen (O).
    Type: Application
    Filed: January 27, 2009
    Publication date: June 17, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Takashi Nishihara, Rie Kojima, Hideo Kusada, Noboru Yamada
  • Publication number: 20100143638
    Abstract: A sheet material for a multilayer optical recording medium (10-a) which comprises an optical recording layer comprising a multiple-photon absorbing material (1), an adhesive layer (4) and a transfer layer of the energy beam curable type (3). The transfer layer of the energy beam curable type (3) is a layer for transferring the shape of a stamper having a shape having protrusions and depressions on the surface as recording pits and/or grooves. The transfer layer of the energy beam curable type (3) and the adhesive layer (4) are each disposed as outermost layers. A multilayer optical recording medium which has a repetitive structure comprising a plurality of laminated optical recording layers and exhibits excellent accuracy of thickness of each layer and the whole laminate can be produced with excellent productivity. Positional information can be contained at the inside of the optical recording medium.
    Type: Application
    Filed: July 4, 2008
    Publication date: June 10, 2010
    Applicant: LINTEC CORPORATION
    Inventor: Masahito Nakabayashi
  • Patent number: 7727610
    Abstract: Compositions for protective films for optical disc are provided. Compositions for protective films, particularly compositions for protective films for optical discs having low viscosity and low shrinkage without compromising scratch resistance even when a dilution solvent is not used. The compositions for protective films for optical discs include a composition for protective films containing a UV-curable acrylic radical-based resin as the main component including a multifunctional acrylic monomer, a multifunctional acrylic oligomer and a bifunctional acrylic monomer containing repeating units including at least one of an ethoxy and propoxy group as starting materials for the acrylic radical-based resin; and a photoinitiator.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: June 1, 2010
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventor: Kiichiro Oguni
  • Publication number: 20100128589
    Abstract: A composition for holographic recording medium, which can be coated in a uniform thickness and enables to simply produce a high definition holographic recording medium is provided. And a holographic medium having a low error rate, high storage capacity, high-performance, high-density, which is produced using the composition for the holographic recording medium, is also provided. The composition comprises a (meth)acrylic acid ester group-containing polymerizable substance, an alicyclic epoxy group-containing cationical polymerizable substance of which is ring-opening polymerized by heat, and a hydroxyl group-containing substance which is reactive with the alicyclic epoxy group-containing cationical polymerizable substance. The holographic recording medium is produced by forming a holographic recording layer on a substrate by applying the composition on the base material and polymerizing the alicyclic epoxy group-containing cationical polymerizable substance and the hydroxyl group-containing substance.
    Type: Application
    Filed: July 23, 2008
    Publication date: May 27, 2010
    Applicants: Kyoeisha Chemical Co., Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Junichi Ikeda, Nobuya Morishita, Ryo Arai, Chisato Katahira, Yoshihiro Takatani, Kouzaburo Yokouchi, Mitsuteru Inoue, Pang Boey Lim
  • Publication number: 20100129587
    Abstract: Disclosed is a composition capable of imparting high hardness, abrasion resistance, excellent contamination resistance and durability of such contamination resistance even in the form of a thin film. Specifically disclosed is a composition including an organic polymer containing 5-30% by mass of a radically polymerizable monomer with a perfluoroalkyl group, 0.01-5% by mass of ?,?-dimercaptopolysiloxane, 5-40% by mass of a radically polymerizable monomer with a cationically photopolymerizable epoxy group and 25-75% by mass of another radically polymerizable monomer which is copolymerizable with the aforementioned substances. The organic polymer has a structure corresponding to a radically polymerized copolymer of the monomer mixture wherein the molar ratio of the mercapto group to the epoxy group is 0.0001-0.025 and/or a structure obtained by reacting a (meth)acrylic acid with the epoxy group of the radically polymerized copolymer.
    Type: Application
    Filed: December 2, 2005
    Publication date: May 27, 2010
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Makoto Terauchi
  • Publication number: 20100112268
    Abstract: An optical recording medium is provided. The optical recording medium includes a first recording layer and a second recording layer. The first recording layer includes a compound in the form of M(1?x)Ox, where M is one of Si, Zn or Sn, and X is approximately 0.001 to 0.1.
    Type: Application
    Filed: June 11, 2009
    Publication date: May 6, 2010
    Inventor: Kwanglyul LEE
  • Publication number: 20100110860
    Abstract: Optical information media containing a magnesium metal layer and a reactive material layer are disclosed. The magnesium metal can react directly with the reactive material layer, or with a chemical evolved from the reactive material layer after application of energy from a source such as a laser.
    Type: Application
    Filed: November 2, 2009
    Publication date: May 6, 2010
    Applicant: BRIGHAM YOUNG UNIVERSITY
    Inventors: Douglas P. Hansen, Matthew R. Linford
  • Publication number: 20100112269
    Abstract: An optical recording medium is provided. The optical recording medium includes a first recording layer and a second recording layer. The second recording layer includes a compound in the form of (CuXM(1-X))YO(1-Y), where M is one of Sn, Si, Zn, Al, Mg, Ge, Sb or Te, and X is approximately 0.5 to 1, and Y is approximately 0.001 to 0.1.
    Type: Application
    Filed: June 11, 2009
    Publication date: May 6, 2010
    Inventor: Kwanglyul LEE
  • Publication number: 20100103795
    Abstract: Optical information media having a support substrate and an inorganic nanomaterial data layer are disclosed. The data layer provides enhanced stability and optical performance as compared to conventional data layers.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Applicant: BRIGHAM YOUNG UNIVERSITY
    Inventors: Christopher J. Buntel, Robert C. Davis, Douglas P. Hansen, Matthew R. Linford, Barry M. Lunt
  • Publication number: 20100086725
    Abstract: An ultraviolet-curable composition for an optical disk intermediate layer includes a urethane(meth)acrylate (a) having three or more radical-polymerizable unsaturated bonds, a (meth)acrylate (b) having four or more radical-polymerizable unsaturated bonds which is other than the urethane(meth)acrylate (a), and a monofunctional alicyclic(meth)acrylate (c), wherein a B-type viscosity of the composition at 25° C. is not more than 1,000 mPa·s. The ultraviolet-curable composition may be used for producing the intermediate layers of optical disks by using a general-purpose resin such as a polycarbonate used as a stamper.
    Type: Application
    Filed: March 4, 2008
    Publication date: April 8, 2010
    Applicant: DIC CORPORATION
    Inventors: Takashi Kitsunai, Daisuke Ito
  • Publication number: 20100075100
    Abstract: An ultraviolet-curable composition for an optical disk which is used in producing the optical disk which includes a substrate and, formed thereover, at least both a light reflection layer and a light transmission layer and in which data is read using a laser beam striking from the light transmission layer side. The composition is used to form the light transmission layer. The ultraviolet-curable composition for an optical disk contains an epoxy(meth)acrylate, a (metha)acrylate having two radical-polymerizable unsaturated bonds, and a free-radical photopolymerization initiator, in which the (meth)acrylate having two radical-polymerizable unsaturated bonds contains a (meth)acrylate of a neopentyl glycol hydroxypivalate compound, the content of the (meth)acrylate of the neopentyl glycol hydroxypivalate compound is 10 to 40% by mass, and the content of the free-radical photopolymerization initiator is 1 to 4% by mass.
    Type: Application
    Filed: March 24, 2008
    Publication date: March 25, 2010
    Applicant: DIC CORPORATION
    Inventors: Daisuke Ito, Junji Yamaguchi
  • Publication number: 20100068445
    Abstract: Optical information media containing an ultraviolet protection layer are described. The protection layer will reduce or eliminate damage to the media's data layer and substrate.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 18, 2010
    Applicant: BRIGHAM YOUNG UNIVERSITY
    Inventors: Robert C. Davis, Matthew R. Linford, Barry M. Lunt
  • Publication number: 20100055376
    Abstract: The present invention provides an ultraviolet-curable composition that inhibits deterioration of a reflective layer during environmental changes in humidity and temperature even when using silicon or a silicon compound for the light reflecting layer, and an optical disc enabling preferable reading and writing of recording signals even during environmental changes in humidity and temperature.
    Type: Application
    Filed: August 24, 2009
    Publication date: March 4, 2010
    Applicant: DIC Corporation
    Inventors: Hirokazu Saito, Koichi Fujii
  • Publication number: 20100055377
    Abstract: To provide an optical recording medium excellent in the balance of characteristics, which has a sufficient surface hardness and of which the deformation when the environmental temperature and the environmental humidity change is small. An optical recording medium comprising a resin substrate, a recording and reading layer, a cover coat layer which is a cured product of a radiation-curable composition containing a urethane (meth)acrylate (A) and a (meth)acrylate compound (B) other than the urethane (meth)acrylate (A), and a hard coat layer having a surface hardness of at least B in this order, wherein of the cover coat layer, the ratio of the elastic modulus in tension upon absorbing water to saturation to the elastic modulus in tension at 25° C. under a humidity of 45% is at least 0.20.
    Type: Application
    Filed: August 20, 2008
    Publication date: March 4, 2010
    Applicant: Mitsubishi Kagaku Media Co., Ltd
    Inventors: Akira Esaki, Yuuki Ono, Yuuji Soejima, Kentarou Uchino, Makoto Terauchi, Takeshi Kuriwada
  • Publication number: 20100003447
    Abstract: An optical information recording medium includes a recording layer that absorbs recording light in accordance with its wavelength, the recording light being condensed for information recording, and increases the temperature in the vicinity of a focus so as to form a recording mark and that has properties of increasing a light absorption amount with respect to the wavelength of the recording light by heating performed at a temperature of 120° C. or more.
    Type: Application
    Filed: June 30, 2009
    Publication date: January 7, 2010
    Applicant: Sony Corporation
    Inventors: Yusuke Suzuki, Takao Kudo, Kazuya Hayashibe, Hiroshi Uchiyama
  • Publication number: 20090324870
    Abstract: By using an ultraviolet-curable composition, which contains a specific ultraviolet-curable compound obtained by modifying a bisphenol epoxy compound with a polyester having a flexible structure, as a light transmission layer. Accordingly, the present invention achieves an optical disk having excellent characteristics such as excellent durability, excellent light resistance and excellently reduced warp, while suppressing deterioration of the light reflection film due to environment of high temperature and high humidity or light exposure. Consequently the ultraviolet-curable composition of the present invention is most suitable for optical disks having a thick light-transmitting layer on which recording/reproduction is performed by using a blue laser.
    Type: Application
    Filed: September 25, 2007
    Publication date: December 31, 2009
    Applicant: DIC CORPORATION
    Inventors: Daisuke Ito, Junji Yamaguchi, Takashi Kitsunai, Hiroyuki Tokuda, Nobuo Kobayashi
  • Publication number: 20090291248
    Abstract: A coating composition containing a solvent and a coating agent having an ionizing radiation-curable compound as a principal component thereof, wherein under the following condition for the concentration a (wt %) of the coating agent in the coating composition 0<a?60, the concentration a of the coating agent and the surface tension b (dyne/cm) of the coating composition satisfy the following relationship b?(?a/15)+26, is applied onto a surface of a protective film 11 and curing is carried out to form a hard coating layer 12. Even in the case that projections or foreign bodies are present on the surface of the protective film 11, the hard coating layer 12 can conceal these and hence can have high surface smoothness.
    Type: Application
    Filed: July 30, 2009
    Publication date: November 26, 2009
    Applicants: LINTEC CORPORATION, SONY CORPORATION
    Inventors: Yuki Hongo, Satoru Shoshi, Hideo Senoo, Takeshi Yamasaki, Tomomi Yukumoto
  • Publication number: 20090181442
    Abstract: The method comprises chemical modification of an optionally metallized polymer surface, for example a polycarbonate surface or a polymethacryllate surface functionalized with amino groups, said surfaces being optionally metallized, by treating said polymer surface with a mercaptoalkanoic acid or the salts or derivates thereof. The surfaces obtained by said method may be used as solid supports for immobilizing biomolecules, such as nucleic acids, proteins or membranes.
    Type: Application
    Filed: December 26, 2008
    Publication date: July 16, 2009
    Inventors: Maria Del Carmen Banuls Polo, Francisco Garcia Pinon, Angel Maquieira Catala, Rosa Puchades Pla
  • Publication number: 20090176048
    Abstract: A recording material of Ag1-xSbx (x=10.8˜25.5 at. %) films for WORM optical disk recording media is invented. The thermal analysis shows that the phase change temperature of AgSb film is between 250 and 270?. The optical property analysis shows that all the as deposited films have good optical absorption and high reflectivity. The X-ray Diffraction analysis shows that the as deposited film and the annealed film are kept at ??-AgSb crystalline phase. The TEM analysis shows that the grain size of the Ag80.9Sb19.1 film will grow after annealing. The dynamic test shows that the carrier-to-noise ratio (CNR) of the Ag80.9Sb19.1 optical disc is about 45 dB with ?=657 nm, NA=0.65 and a linear velocity of 3.5 m/s. These Ag1-xSbx films have good optical absorption, high reflectivity and good carrier-to-noise ratio. It can be used as the WORM optical disk recording film.
    Type: Application
    Filed: April 10, 2008
    Publication date: July 9, 2009
    Applicant: CMC Magnetics Corporation
    Inventors: Po-Cheng Kuo, Yen-Hsiang Fang, Po-Wei Chen, Wei-Chih Hsu, Don-Yau Chiang, Wei-Tai Tang, Shih-Hsien Ma