Patents Assigned to Soken Chemical & Engineering Co., Ltd.
  • Publication number: 20120104308
    Abstract: A composition for a solid electrolyte includes a polymer compound (A) and a charge transfer material. The polymer compound (A) is obtained by polymerizing a monomer (a) comprising a monomer (a-2) having chelating ability. The charge transfer material is preferably a carbon material and/or a ?-conjugated polymer (?). When a polymer electrolyte layer of a dye-sensitized solar cell is formed from the above solid electrolyte, efficient charge transfer and sufficient charge life can be reconciled with each other.
    Type: Application
    Filed: July 7, 2010
    Publication date: May 3, 2012
    Applicant: Soken Chemical & Engineering Co., Ltd.
    Inventors: Syuji Okamoto, Fumiaki Kobayashi
  • Publication number: 20120097900
    Abstract: A conductive polymer composition which can be homogeneously dissolved in a solvent and can form a smooth film. The conductive polymer composition is a conductive polymer composition comprising a polymer compound (A) and a ?-conjugated polymer (?), wherein the polymer compound (A) is a polymer compound obtained by polymerizing 10 to 50% by mol of a monomer (a-1) having a sulfonic acid group or a sulfonate group, 10 to 90% by mol of a monomer (a-2) having chelating ability and 0 to 70% by mol of other monomer (a-3), and the ?-conjugated polymer (?) is a ?-conjugated polymer obtained by polymerizing at least one monomer selected from monomers represented by the following formulas (I) to (III).
    Type: Application
    Filed: July 7, 2010
    Publication date: April 26, 2012
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Syuji Okamoto, Fumiaki Kobayashi
  • Patent number: 8124706
    Abstract: An adhesive composition includes 100 parts by weight of (a) a (meth)acrylic monomer and 10 to 400 parts by weight of (b) a (meth)acrylic polymer, wherein the weight-average molecular weight of the (meth)acrylic polymer (b) in terms of standard polystyrene, as measured by GPC, is in the range of 50,000 to 800,000, and the (meth)acrylic polymer (b) has 0.3 to 1 end group represented by the formula (1) based on one polymer chain.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: February 28, 2012
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventor: Mitsuhiko Nakazawa
  • Publication number: 20120028041
    Abstract: Provided is a radiation-curable adhesive composition for an optical component, the radiation-curable adhesive composition exhibiting a high tensile strength and flexibility suitable for enabling stable adhesion between the optical component and an adherend when light-cured and exhibiting excellent durability. A radiation-curable adhesive composition for an optical component includes 100 parts by weight of a specific (meth)acrylic copolymer (A), 2 to 20 parts by weight of a specific radiation-curable acrylic compound (B), 3 to 50 parts by weight of a specific radiation-curable acrylic compound (C), 0.1 to 10 parts by weight of a hydrogen abstraction-type photopolymerization initiator (D), 0.01 to 10 parts by weight of an isocyanate crosslinking agent (E), and 0.01 to 3 parts by weight of a silane compound (F), wherein the total amount of the amount of (B) mixed and the amount of (C) mixed is 5 to 60 parts by weight.
    Type: Application
    Filed: February 10, 2010
    Publication date: February 2, 2012
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Yuji Koyama, Mingxing An
  • Publication number: 20110309308
    Abstract: The purpose is to provide a technique which enables various kinds of conductive polymer composition to be dissolved in an organic solvent and to be used to form a conductive membrane on a target portion easily. Provided is a composite conductive polymer composition, a method of manufacturing the same, and a solution obtained by dissolving the composition in an aromatic solvent, ester-based solvent or ketone-based solvent.
    Type: Application
    Filed: February 17, 2010
    Publication date: December 22, 2011
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Hikaru Meguro, Shuji Okamoto, Fumiaki Kobayashi
  • Publication number: 20110300377
    Abstract: A radiation-curable adhesive composition for an optical component includes 100 parts by weight of a specific (meth)acrylic copolymer (A), 0.01 to 10 parts by weight of a specific radiation-curable acrylic compound (B), 1 to 30 parts by weight of a specific radiation-curable acrylic compound (C), 0.1 to 10 parts by weight of a hydrogen abstraction-type photopolymerization initiator (D), 0.01 to 10 parts by weight of an isocyanate crosslinking agent (E), and 0.01 to 3 parts by weight of a silane compound (F), wherein the total amount of the amount of (B) mixed and the amount of (C) mixed is 3 to 40 parts by weight, and the amount of (C) mixed is larger than the amount of (B) mixed.
    Type: Application
    Filed: February 10, 2010
    Publication date: December 8, 2011
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Yuji Koyama, Mingxing An
  • Publication number: 20110293953
    Abstract: An object is to provide a pressure-sensitive adhesive composition for a polarizer that is excellent in durability and simultaneously is excellent in prevention of leakage of light, without the use of a high-energy light ray. The pressure-sensitive adhesive composition for a polarizer contains components (A) to (C) and having a gel fraction of 91% or more. (A) 100 parts by weight of an acrylic polymer that is obtained by copolymerizing at least the following monomer components (a1) to (a3), and has a weight average molecular weight of 500,000 to 2,000,000 and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight (Mn) of 8 or less: (a1) 45 to 94.9% by mass of an alkyl (meth)acrylate ester monomer, (a2) 0.1 to 5% by mass of a carboxyl group-containing monomer, and (a3) 5 to 50% by mass of a benzene ring-containing monomer; (B) 4 to 12 parts by weight of a tolylene diisocyanate crosslinking agent; and (C) 0.
    Type: Application
    Filed: November 30, 2009
    Publication date: December 1, 2011
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., Ltd.
    Inventors: Koji Tomita, Yuya Yonekawa
  • Publication number: 20110284802
    Abstract: The purpose is to provide a technique which enables various kinds of conductive polymer composition to be dissolved in an organic solvent and to be used to form a conductive membrane on a target portion easily. Provided is a composite conductive polymer composition, a method of manufacturing the same, and a solution obtained by dissolving the composition in a alcohol-based, glycol-based, or ether-based solvent.
    Type: Application
    Filed: February 17, 2010
    Publication date: November 24, 2011
    Applicant: SOKEN CHEMICAL & ENGINEERING CO. LTD
    Inventors: Hikaru Meguro, Shuji Okamoto, Fumiaki Kobayashi
  • Publication number: 20100282308
    Abstract: A dye-sensitized solar cell includes a transparent substrate, a light-transmitting electrode, a metal oxide layer loaded with a dye, an electrolyte polymer layer, a counter electrode and a counter electrode substrate which are laminated in this order, and is characterized in that the electrolyte polymer layer is a solid-state layer containing a conductive polymer (A) doped with a doping agent and an ionic compound (B) mutually substitutable with a dopant ion species of the doping agent. Accordingly, light can be directly and stably converted into electricity for a long period of time, and a change of the conversion efficiency with time is small.
    Type: Application
    Filed: June 6, 2008
    Publication date: November 11, 2010
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventor: Syuji Okamoto
  • Patent number: 7825189
    Abstract: An adhesive composition for optical films, which inhibits contamination in the re-release process and peeling under severe conditions while favorably maintaining its durability and light leakage prevention properties. The adhesive composition includes: (A) an acrylic-based polymer which is obtained by copolymerizing at least the following monomer components: (a1) a (meth)acrylic acid alkyl ester and/or a (meth)acrylic acid alkoxyalkyl ester, (a2) an aromatic ring-containing monomer, (a3) a hydroxyl group-containing monomer, and optionally, (a4) a carboxyl group- or amino group-containing monomer, and which has a weight-average molecular weight of 800,000 to 1,600,000 and a value (Mw/Mn), as obtained by dividing the weight-average molecular weight of the copolymer by the number-average molecular weight thereof, of 10 to 50, (B) an isocyanate-based crosslinking agent, (C) a silane coupling agent, and optionally, (D) a crosslinking accelerator.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: November 2, 2010
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Koji Tomita, Takayuki Tokuyama
  • Publication number: 20100208343
    Abstract: An adhesive composition for polarizing plates in which an acrylic polymer, a tin compound having a dialkyl group and serving as a cross-linking accelerator and an isocyanate cross-linker are dissolved in an organic solvent, the acrylic polymer being formed by copolymerization of monomers containing an alkyl (meth)acrylate, a hydroxyl group containing monomer and/or a carboxyl group containing monomer, wherein preferably, a solution containing 30% by weight of the acrylic polymer which constitutes the adhesive composition, dissolved in 70% by weight of ethyl acetate has a viscosity in the range of 0.5 to 10.0 Pa·s measured at 23° C., and the acrylic polymer has a weight-average molecular weight in the range of 300,000 to 700,000.
    Type: Application
    Filed: July 10, 2008
    Publication date: August 19, 2010
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Tetsuya Yoshida, Satoshi Uehara
  • Patent number: 7741378
    Abstract: To provide porous monodispersed particles obtained by preparing, as seed particles, poly(methyl methacrylate) particles or acrylic resin particles comprising 70% by mass or more of methyl methacrylate as a copolymerization component, swelling the seed particles 20 to 80 times the size of the original seed particles by mass using a swelling solution comprising an oil-soluble polymerization initiator and a monomer mixture containing 70% by mass or more of methyl methacrylate and 3 to 8% by mass of divinylbenzene, and polymerizing the monomers. The particles are porous particles with a diameter of the order of micrometers and a narrow particle-size distribution and are monodispersed. Colored monodispersed particles obtained by agglomerating a pigment in the porous monodispersed particles are monodispersed and spherical, and contain a large amount of pigment therein.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: June 22, 2010
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventor: Ying Cui
  • Publication number: 20100121014
    Abstract: An adhesive composition includes 100 parts by weight of (a) a (meth)acrylic monomer and 10 to 400 parts by weight of (b) a (meth)acrylic polymer, wherein the weight-average molecular weight of the (meth)acrylic polymer (b) in terms of standard polystyrene, as measured by GPC, is in the range of 50,000 to 800,000, and the (meth)acrylic polymer (b) has 0.3 to 1 end group represented by the formula (1) based on one polymer chain.
    Type: Application
    Filed: March 25, 2008
    Publication date: May 13, 2010
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventor: Mitsuhiko Nakazawa
  • Publication number: 20100112348
    Abstract: Pressure sensitive adhesives for optical films include an acrylic copolymer (A) obtained by copolymerizing 95.0 to 98.0 parts by weight of n-butyl acrylate (a), 2.0 to 5.0 parts by weight of a hydroxyl group-containing (meth)acrylate (b) represented by Formula (1) below, and not more than 2.0 parts by weight of (meth)acrylic acid (c) (the total of (a) to (c) is 100 parts by weight), and satisfy specific requirements.
    Type: Application
    Filed: March 4, 2008
    Publication date: May 6, 2010
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Makoto Kondo, Mitsuhiko Nakazawa
  • Publication number: 20090326155
    Abstract: A pressure-sensitive adhesive composition for PDP front filters includes 100 parts by weight of a high molecular weight acrylic polymer A having a COOH or OH group, a weight average molecular weight (Mw) of 400,000 to less than 800,000, a molecular weight distribution (Mw/Mn) of not more than 5 and a glass transition temperature (Tg-A) of ?40 to ?10° C., and 5 to 20 parts by weight of a low molecular weight acrylic polymer B having a weight average molecular weight (Mw) of 10,000 to 50,000, a molecular weight distribution (Mw/Mn) of not more than 5 and a glass transition temperature (Tg-B) of 40 to 120° C.; and is crosslinked to a gel fraction of 50 to 90% and has a 90° peel strength of 5 to 15 N/25 mm. The pressure-sensitive adhesive composition does not cause bonding failures such as lifting even when exposed to thermal cycles.
    Type: Application
    Filed: June 14, 2007
    Publication date: December 31, 2009
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventor: Koji Tomita
  • Publication number: 20090270557
    Abstract: An adhesive composition for optical films, which inhibits contamination in the re-release process and peeling under severe conditions while favorably maintaining its durability and light leakage prevention properties. The adhesive composition includes: (A) an acrylic-based polymer which is obtained by copolymerizing at least the following monomer components: (a1) a (meth)acrylic acid alkyl ester and/or a (meth)acrylic acid alkoxyalkyl ester, (a2) an aromatic ring-containing monomer, (a3) a hydroxyl group-containing monomer, and optionally, (a4) a carboxyl group- or amino group-containing monomer, and which has a weight-average molecular weight of 800,000 to 1,600,000 and a value (Mw/Mn), as obtained by dividing the weight-average molecular weight of the copolymer by the number-average molecular weight thereof of 10 to 50, (B) an isocyanate-based crosslinking agent, (C) a silane coupling agent, and optionally, (D) a crosslinking accelerator.
    Type: Application
    Filed: November 16, 2006
    Publication date: October 29, 2009
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Koji Tomita, Takayuki Tokuyama
  • Patent number: 7608656
    Abstract: A process for producing an emulsion pressure-sensitive adhesive includes (co)polymerizing a main monomer in the presence of a protective colloid, the protective colloid being an acrylic copolymer including (A-1) at least one hydrophilic monomer selected from the group consisting of acrylamide, methacrylamide, hydroxyethyl acrylate and hydroxyethyl methacrylate and (B-1) an alkyl (meth)acrylate that is copolymerizable with the hydrophilic monomer (A-1) and whose alkyl group has 4 to 18 carbon atoms, or (A-2) a hydrophilic monomer being acrylic acid and/or methacrylic acid and (B-2) an alkyl (meth)acrylate that is copolymerizable with the hydrophilic monomer (A-2) and whose alkyl group has 4 to 9 carbon atoms; the hydrophilic monomer and the alkyl (meth)acrylate being copolymerized in a weight ratio in the range of 40-70:60-30; the acrylic copolymer having a weight-average molecular weight in the range of 500 to 50000.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: October 27, 2009
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventor: Kiyokuni Saitama
  • Patent number: 7527829
    Abstract: Fluid colloidal crystals comprising a solid-liquid dispersion electrostatically charged at not more than 2000 ?S/cm in terms of an electrical conductivity, wherein the solid-liquid dispersion comprises, as a dispersoid, electrostatically chargeable spherical colloidal particles of an organic or inorganic polymer having a mean volume diameter (d) of not more than 30 ?m, and as a dispersion medium, an aqueous solution or a dissolving water-containing non-aqueous solution, the dispersion concentration of the spherical colloidal particles is not more than 70%, around the dispersoid an electric double layer of a given thickness (?e) is formed, and the spherical colloidal particles form a three-dimensionally ordered lattice that shows fluidity and is a particle array structure in which the colloidal particles are aligned longitudinally and laterally in a lattice form while an interparticle distance (L) defined as a distance between centers of the particles arranged opposite to each other along the center line satis
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: May 5, 2009
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Tetsuya Yoshida, Yuka Okuda, Youichi Takizawa, Junji Watanabe
  • Publication number: 20090110849
    Abstract: An adhesive composition for a polarizing plate includes a specific (meth)acrylic polymer (A), an ionic liquid (B) and an isocyanate-based crosslinking agent (C) each in a specific amount. When an adhesive layer obtained from the adhesive composition for a polarizing plate is provided on a surface of a polarizing plate, the adhesive layer is appropriately plasticized and has improved compatibility with an adherend. Thus, the adhesive layer can eliminate the problems of separation or lifting due to the deflection caused by the weight of the polarizing plate, which is significant when a large polarizing plate is laminated to a liquid crystal cell. Furthermore, the adhesive layer can follow fine unevenness on a surface of glass that is a liquid crystal cell substrate, and thus can reliably prevent the separation or lifting of the polarizing plate from the liquid crystal cell even at a high temperature or under a hot and humid environment. The adhesive layer provides excellent adhesion to the liquid crystal cell.
    Type: Application
    Filed: September 20, 2005
    Publication date: April 30, 2009
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventor: Sadahiko Nishina
  • Publication number: 20090036559
    Abstract: To provide porous monodispersed particles obtained by preparing, as seed particles, poly(methyl methacrylate) particles or acrylic resin particles comprising 70% by mass or more of methyl methacrylate as a copolymerization component, swelling the seed particles 20 to 80 times the size of the original seed particles by mass using a swelling solution comprising an oil-soluble polymerization initiator and a monomer mixture containing 70% by mass or more of methyl methacrylate and 3 to 8% by mass of divinylbenzene, and polymerizing the monomers. The particles are porous particles with a diameter of the order of micrometers and a narrow particle-size distribution and are monodispersed. Colored monodispersed particles obtained by agglomerating a pigment in the porous monodispersed particles are monodispersed and spherical, and contain a large amount of pigment therein.
    Type: Application
    Filed: March 1, 2006
    Publication date: February 5, 2009
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD
    Inventor: Ying Cui