Patents Assigned to Soken Chemical & Engineering Co., Ltd.
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Publication number: 20120104308Abstract: 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: ApplicationFiled: July 7, 2010Publication date: May 3, 2012Applicant: Soken Chemical & Engineering Co., Ltd.Inventors: Syuji Okamoto, Fumiaki Kobayashi
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Publication number: 20120097900Abstract: 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: ApplicationFiled: July 7, 2010Publication date: April 26, 2012Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Syuji Okamoto, Fumiaki Kobayashi
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Patent number: 8124706Abstract: 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: GrantFiled: March 25, 2008Date of Patent: February 28, 2012Assignee: Soken Chemical & Engineering Co., Ltd.Inventor: Mitsuhiko Nakazawa
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Publication number: 20120028041Abstract: 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: ApplicationFiled: February 10, 2010Publication date: February 2, 2012Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Yuji Koyama, Mingxing An
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Publication number: 20110309308Abstract: 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: ApplicationFiled: February 17, 2010Publication date: December 22, 2011Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Hikaru Meguro, Shuji Okamoto, Fumiaki Kobayashi
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Publication number: 20110300377Abstract: 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: ApplicationFiled: February 10, 2010Publication date: December 8, 2011Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Yuji Koyama, Mingxing An
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Publication number: 20110293953Abstract: 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: ApplicationFiled: November 30, 2009Publication date: December 1, 2011Applicant: SOKEN CHEMICAL & ENGINEERING CO., Ltd.Inventors: Koji Tomita, Yuya Yonekawa
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Publication number: 20110284802Abstract: 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: ApplicationFiled: February 17, 2010Publication date: November 24, 2011Applicant: SOKEN CHEMICAL & ENGINEERING CO. LTDInventors: Hikaru Meguro, Shuji Okamoto, Fumiaki Kobayashi
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Publication number: 20100282308Abstract: 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: ApplicationFiled: June 6, 2008Publication date: November 11, 2010Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventor: Syuji Okamoto
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Patent number: 7825189Abstract: 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: GrantFiled: November 16, 2006Date of Patent: November 2, 2010Assignee: Soken Chemical & Engineering Co., Ltd.Inventors: Koji Tomita, Takayuki Tokuyama
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Publication number: 20100208343Abstract: 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: ApplicationFiled: July 10, 2008Publication date: August 19, 2010Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Tetsuya Yoshida, Satoshi Uehara
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Patent number: 7741378Abstract: 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: GrantFiled: March 1, 2006Date of Patent: June 22, 2010Assignee: Soken Chemical & Engineering Co., Ltd.Inventor: Ying Cui
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Publication number: 20100121014Abstract: 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: ApplicationFiled: March 25, 2008Publication date: May 13, 2010Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventor: Mitsuhiko Nakazawa
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Publication number: 20100112348Abstract: 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: ApplicationFiled: March 4, 2008Publication date: May 6, 2010Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Makoto Kondo, Mitsuhiko Nakazawa
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Publication number: 20090326155Abstract: 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: ApplicationFiled: June 14, 2007Publication date: December 31, 2009Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventor: Koji Tomita
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Publication number: 20090270557Abstract: 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: ApplicationFiled: November 16, 2006Publication date: October 29, 2009Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventors: Koji Tomita, Takayuki Tokuyama
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Patent number: 7608656Abstract: 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: GrantFiled: February 11, 2008Date of Patent: October 27, 2009Assignee: Soken Chemical & Engineering Co., Ltd.Inventor: Kiyokuni Saitama
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Patent number: 7527829Abstract: 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 satisType: GrantFiled: July 30, 2004Date of Patent: May 5, 2009Assignee: Soken Chemical & Engineering Co., Ltd.Inventors: Tetsuya Yoshida, Yuka Okuda, Youichi Takizawa, Junji Watanabe
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Publication number: 20090110849Abstract: 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: ApplicationFiled: September 20, 2005Publication date: April 30, 2009Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.Inventor: Sadahiko Nishina
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Publication number: 20090036559Abstract: 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: ApplicationFiled: March 1, 2006Publication date: February 5, 2009Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTDInventor: Ying Cui