Patents Assigned to Dainippon Ink
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Publication number: 20080139706Abstract: A process is provided for producing aqueous pigment dispersions for ink-jet recording in which fine pigments are stably dispersed and such a state can be maintained for a long period of storing. Moreover, a process is provided for producing aqueous pigment dispersions for ink-jet recording in which the time required for production such as dispersing time is short, and the production efficiency is high. The process for producing aqueous pigment dispersions for ink-jet recording includes a first step of kneading (1) a styrene-acrylic type resin with a styrene type monomer unit of 50 to 90 mass %, and at least one unit selected from an acrylic monomer unit and methacrylic monomer unit, having an acid value of 50 to 300, (2) a pigment, (3) a basic compound, and (4) a humectant to produce a solid colored kneaded product, and a second step of dispersing the solid colored kneaded product in an aqueous medium comprising water or water and humectant.Type: ApplicationFiled: August 11, 2003Publication date: June 12, 2008Applicant: Dainippon Ink And Chemicals, Inc.Inventors: Hideaki Kaji, Kazuhiro Kaneko, Ritsuko Small, Hiromichi Arakawa, Shinichi Okada, Hiroshi Harada, Sadahiro Inoue
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Patent number: 7385016Abstract: A curable resin composition which exhibits excellent hardness of their curing products as well as storage stability is provided, and a simple method to obtain acrylated resins is provided. The composition comprises a curable oligomer which has an acryloyl group and a substituted methacrylate group represented by the following structure The process comprises a reaction step of reacting at least one monomeric multifunctional acrylate in the presence of a tertiary organic phosphine.Type: GrantFiled: December 19, 2002Date of Patent: June 10, 2008Assignee: Dainippon Ink & Chemicals, Inc.Inventors: Artur Lachowicz, Kai-Uwe Gaudl, Gerwald Grahe
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Patent number: 7371870Abstract: There are provided benzimidazolone compounds that provide a plurality of hues from a single structural formula, and are useful as pigments that offer superior dispersibility in binder resins, as well as benzimidazolone compounds that are useful as pigments, and show minimal flocculation when pigments of two or more different hues are blended together to produced a desired hue. A benzimidazolone compound represented by a general formula (1) shown below. (wherein, R1, R2, R3 and R4 each represent, independently, a hydrogen atom, an alkyl group of 1 to 5 carbon atoms, or an alkoxy group of 1 to 5 carbon atoms, and R5 and R6 each represent, independently, an alkyl group of 1 to 5 carbon atoms).Type: GrantFiled: June 23, 2004Date of Patent: May 13, 2008Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Masaki Hosaka, Toshio Takei
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Patent number: 7365147Abstract: In the technical field where a difunctional epoxy resin having increased molecular weight is used to impart flexibility or improving dielectric properties, the present invention has remarkably improved moisture resistance and water resistance when used to produce a cured epoxy resin article. The epoxy resin composition comprises a difunctional epoxy resin (A) having a structure wherein an aromatic hydrocarbon group (a1) having a bonding site in an aromatic nucleus and a hydrocarbon group (a2) having an ether bond or the other hydrocarbon group (a3) are bonded via an acetal bond (a4), and also has a structure wherein a glycidyloxy group is bonded to the aromatic hydrocarbon group (a1); and a curing agent (B) as essential component.Type: GrantFiled: June 19, 2006Date of Patent: April 29, 2008Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Ichiro Ogura, Nobuya Nakamura, Tomoyuki Imada
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Publication number: 20080095994Abstract: The present invention offers sheet molding material for obtaining a thin fuel cell bipolar plate with excellent conductivity and thickness precision, production method thereof, and a fuel cell bipolar plate made by molding the sheet molding material. It relates to sheet molding material for a fuel cell bipolar plate and production method thereof, wherein the sheet molding material has carbon particle layer on at least one surface of the resin sheet, and the percentage of particles of carbon layer in the sheet molding material is 70% to 90% by weight.Type: ApplicationFiled: December 16, 2005Publication date: April 24, 2008Applicant: DAINIPPON INK AND CHEMICALS, INC.Inventors: Jianye Jiang, Tetsuya Harada
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Publication number: 20080090949Abstract: A cationic polyurethane resin aqueous dispersion wherein a cationic polyurethane resin (B) including a structural unit (A) represented by the following general formula (I) is dispersed in aqueous medium, and the content of a cationic amino group of the structural unit (A) in the cationic polyurethane resin (B) is 0.005 to 1.5 equivalents/kg. (In the formula, R1, represents an alkylene group which may include an alicyclic structure, a residue of bivalent phenol or polyoxyalkylene group, R2 and R3 each independently represents an alkyl group which may include an alicyclic structure, and R4 represents a hydrogen atom or a residue of the quaternizing agent which is introduced by the quaternizing reaction, and X? represents an anionic counter ion.Type: ApplicationFiled: June 27, 2005Publication date: April 17, 2008Applicant: Dainippon Ink and Chemicals Inc.Inventors: Kenji Nagao, Kazunori Tanaka, Masato Inoue, Masatoshi Matsuo
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Patent number: 7344073Abstract: The present invention discloses a magnetic recording medium comprised by sequentially layering a magnetic recording layer, intermediate layer and concealment layer on a non-magnetic substrate made from a thermoplastic resin, wherein the surface of the intermediate layer forms a single smooth surface with the surface of the non-magnetic substrate as a result of embedding the magnetic recording layer and the intermediate layer within a portion of the non-magnetic substrate, and the concealment layer conceals the surface of the intermediate layer and the surface of the non-magnetic substrate. This magnetic recording medium has superior concealment and adhesion of the concealment layer for the magnetic recording layer as well as a high level of design properties regardless of the type of magnetic particles used in the magnetic recording layer.Type: GrantFiled: March 29, 2002Date of Patent: March 18, 2008Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Yoshikazu Yamazaki, Kazunari Kawai, Daisuke Yano, Tesshu Miyahara
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Publication number: 20080036946Abstract: An optical film 10 of the present invention includes a plurality of optically anisotropic layers 13 which are laminated, wherein the optically anisotropic layer including: a photoalignment layer (A) 11, in which a liquid crystal aligning capability has been generated by means of photoirradiation; and a polymer layer (B) 12, which contains a liquid crystal compound that has a polymerizable group, and which is obtained by polymerization in a state where it has been aligned by the photoalignment layer (A) 11, wherein the photoalignment layer (A) 11 and the polymer layer (B) 12 are bonded by covalent bonding. The plurality of optically anisotropic layers 13 may be an optically anisotropic layer 13 having a function of a one-half wavelength plate, and an optically anisotropic layer 13 having a function of a one-quarter wavelength plate.Type: ApplicationFiled: December 27, 2005Publication date: February 14, 2008Applicant: DAINIPPON INK AND CHEMICALS, INC.Inventors: Yoshiyuki Ono, Kazunori Maruyama
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Patent number: 7326558Abstract: The treatment of spirulina by a process which includes placing spirulina that has not been previously heat-sterilized, lactic acid bacteria and sugar in water, then culturing the lactic acid bacteria provides treated spirulina in which the distinctive taste and odor of spirulina are minimized, in which active ingredients such as phycocyanin remain intact, and which contains a reduced level of bacteria other than lactic acid bacteria.Type: GrantFiled: March 16, 2005Date of Patent: February 5, 2008Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Masaki Sakakibara, Yoshitsugu Fukuda, Akiko Sekiya, Hideji Nishihashi, Tomohiro Hirahashi
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Patent number: 7319028Abstract: The present invention provides a process for efficiently producing sporangia of Bacillus popilliae containing spores and parasporal bodies having controlling effects on Scarabaeidae insects, and a control agent and controlling method for Scarabaeidae insects obtained by said production process. In a process for producing sporangia of Bacillus popilliae containing spores and parasporal bodies by culturing Bacillus popilliae in a medium containing an adsorbent, the medium contains 0.2-4.0% by weight of glutamic acid.Type: GrantFiled: December 9, 2003Date of Patent: January 15, 2008Assignees: Dainippon Ink and Chemicals, Inc., Chiba Prefectural GovernmentInventors: Gaku Ehara, Masaharu Kimura, Hideji Nishihashi, Tomoko Yokoyama, Makoto Hasegawa, Masao Tanaka, Azusa Fujiie, Shinichi Aoyagi
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Publication number: 20070293615Abstract: An organic-inorganic composite material is disclosed wherein an inorganic compound is finely dispersed in an organic polymer matrix in nanometer order and the inorganic compound content is large. The organic-inorganic composite material has formability and flexibility of organic materials and features of various metal compounds (such as hardness, catalytic power, insulating property, semiconducting property, electronic conductivity, ionic conductivity, large specific surface area, high heat resistance, wear resistance, and dimensional stability to temperature changes or moisture absorption) at the same time.Type: ApplicationFiled: June 24, 2004Publication date: December 20, 2007Applicant: DAINIPPON INK AND CHEMICALS, INC.Inventors: Michiya Nakashima, Satoshi Idemura, Toshihiro Ebine
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Publication number: 20070289484Abstract: The object of the present invention is to provide an active energy ray-curable ink-jet printing ink, including: a coloring agent; a compound having an ethylenic double bond; and a photo-polymerization initiator, wherein the photo-polymerization initiator includes a compound represented by general formula (1): (wherein A represents any one of —O—, —CH2—, —CH(CH3)—, and —C(CH3)2—; and each of R1 and R2 independently represents a hydrogen atom, a methyl group, or a trimethylsilyl group), and an ?-aminoketone-based compound and/or an acyl phosphine oxide-based compound, and 40% by mass or more of the compound represented by general formula (1) is included with respect to the total photo-polymerization initiator.Type: ApplicationFiled: October 28, 2005Publication date: December 20, 2007Applicant: DAINIPPON INK AND CHEMICALS, INC.,Inventors: Hisao Yamaguchi, Yutaka Yamada, Naohito Saito, Osamu Oshima
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Publication number: 20070264589Abstract: Modified nigrosine which has satisfactory dispersibility in resin and which reduces the residual aniline amount is offered, and its production method is also offered. Moreover, toner for developing electrostatic charge images is offered, which uses modified nigrosine colorant that resolves the aforementioned problems, which has excellent charge-imparting properties, which exhibits no fogging, which experiences no scattering of toner inside the developing apparatus, and which has little fluctuation of image density. Modified nigrosine, which is nigrosine (b) that has been modified by rosin-modified resin (a) with an acid value of 110 or less.Type: ApplicationFiled: September 21, 2005Publication date: November 15, 2007Applicant: DAINIPPON INK & CHEMICAL, INC.Inventors: Shinji Amaya, Toshiro Kogawara
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Patent number: 7295425Abstract: The present invention provides a molding having excellent workability and a production method therefore. In addition, the present invention provides a molding with which a capacitor element having excellent electric properties can be obtained, and which has excellent workability that can be used to make a porous anode element for an electrolytic capacitor. The molding with a substratum has a sheet-shaped substratum and a molding which is provided on this sheet-shaped substratum such that the molding can be separated, in which the molding has a protective layer and a porous-body-forming layer, the protective layer includes resin as a main component, and the porous-body-forming layer includes valve action metal powder and binder resin.Type: GrantFiled: May 21, 2003Date of Patent: November 13, 2007Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Wataru Suenaga, Minoru Moriyama, Akiko Miyamoto
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Patent number: 7294670Abstract: An aqueous urethane resin dispersion for bonding can be used in wet lamination and dry lamination and can be reactivated easily at a low temperature of about 50 to 70° C. after drying, and is also superior in coatability, adhesive strength, and heat resistance. The aqueous dispersion of a polyurethane resin is superior in contact adhesiveness immediately after lamination and also has good permeability and good coatability not only on bases having smooth surfaces such as plastics and metals, but also on porous bases such as fibers, papers, and buffed leathers; an aqueous adhesive using the aqueous dispersion; and an article to which it is applied. The aqueous polyurethane resin dispersion has at least one of a sulfonate group and a carboxylate group, wherein an average particle diameter of the polyurethane resin is 0.05 to 0.30 ?m and a surface tension of the aqueous dispersion (A) is 40 mN/m or less.Type: GrantFiled: September 20, 2002Date of Patent: November 13, 2007Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Kazuo Kuba, Mitsuru Kitada
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Publication number: 20070254220Abstract: An azo compound of the present invention is represented by the general formula (1): (wherein, R1 and R2 each independently represents a hydroxy group, or a polymerizable functional group selected from the group consisting of a (meth)acryloyl group, a (meth)acryloyloxy group, a (meth)acrylamide group, a vinyl group, a vinyloxy group, and a maleimide group; X1 represents single bond when R1 is a hydroxy group and represents a linking group represented by -(A1-B1)m- when R1 is a polymerizable functional group; X2 represents a single bond when R2 is a hydroxy group and represents a linking group represented by -(A2-B2)n- when R2 is a polymerizable functional group; R3 and R4 each independently represents —OR7, a hydroxyalkyl group having 1 to 4 carbon atoms, or —CONR8R9; and R5 and R6 each independently represents a carboxy group, a sulfo group, a nitro group, amino group, or a hydroxy group).Type: ApplicationFiled: June 28, 2005Publication date: November 1, 2007Applicants: DAINIPPON INK AND CHEMICALS, INC., HONG KONG UNIVERSITY OF SCIENCE & TECHNOLOGYInventors: Hitoshi Kondo, Yasuhiro Kuwana, Hirokazu Takada, Vladimir Chigrinov, Hoi-Sing Kwok
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Publication number: 20070240613Abstract: A powder coating composition of the present invention includes, as essential components, an epoxy group-containing vinyl copolymer (A) with a glass transition temperature of 40° C. or higher, an epoxy group-containing vinyl copolymer (B) that contains organosiloxane side chains and has a glass transition temperature of 0° C. or lower, and a polyvalent carboxylic acid (C), and is able to form a coating film with excellent external appearance and scratch resistance.Type: ApplicationFiled: March 9, 2005Publication date: October 18, 2007Applicant: DAINIPPON INK AND CHEMICALS, INC.Inventors: Naoyuki Seike, Koichi Yamaguchi, Yutaka Furuya, Tetsuro Agawa
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Publication number: 20070238048Abstract: The object of the present invention is to provide an anti-reflective coating composition having excellent coating properties while maintaining performance as an anti-reflective film. An anti-reflective coating composition comprising at least the following components (A), (B), (C), (D), and (E) and a production method for a pattern using the anti-reflective coating composition, (A) perfluoroalkyl•alkylenesulfonic acid represented by the following formula (1): CnF2n+1(CH2CH2)mSO3H (1) (wherein, n represents an integer from 1 to 20, and m represents an integer from 0 to 20); (B) organic amine; (C) water-soluble polymer; (D) perfluoroalkylethyl group containing compound represented by the following formula (2): CkF2k+1CH2CH2—X—Y (2) (wherein, k represents an integer from 1 to 20, x represents a single bond or a divalent linking group, y represents an anionic group or a nonionic group, and this compound has a structure different from that of the component (A)); and (E) water.Type: ApplicationFiled: June 29, 2005Publication date: October 11, 2007Applicants: DAINIPPON INK AND CHEMICALS, INC., AZ ELECTRONIC MATTERIALS (JAPAN) K.K.Inventors: Jirou Matsuo, Kiyofumi Takano, Yusuke Takano, Yasushi Akiyama
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Publication number: 20070232764Abstract: A moisture-curable polyurethane hot-melt adhesive, which includes a urethane prepolymer obtained by a reaction between polyisocyanate and polyols, wherein the polyols contain: long-chain aliphatic polyester polyol (A) represented by a general formula (I); aliphatic polyether polyol (B) having a number average molecular weight of 3,000 to 15,000; and aromatic polyester polyol (CI) which has a number average molecular weight of 1,000 to 5,000 and has a glass-transition temperature of 40° C. or more; (in the general formula (I), R1 and R2 each independently represent a straight chain alkylene group wherein the number of carbon atoms in the group is an even number, the sum of the number of carbon atoms in R1 and R2 is 12 or more, and n represents a number of 3 to 40).Type: ApplicationFiled: April 7, 2005Publication date: October 4, 2007Applicant: Dainippon Ink and Chemicals, Inc.Inventors: Yukihiko Minamida, Masayoshi Imanaka, Toshio Niwa
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Patent number: 7267835Abstract: The present invention provides a sweetener which has mild sweetness like sugar while maintaining a high sweetness intensity of a Stevia sweetener and also has a sharp head-taste of sweetness, a sharp after-taste of sweetness, as well as reduction of the bitterness and astringency of after-taste peculiar to the Stevia sweetener, and a process for producing the same. The sweetener contains steviol glucosides comprising ?-1,4-galactosyl rebaudioside A having one to three ?-1,4-bonded galactosyl groups in a molecule and rebaudioside A, wherein the following expressions (1) and (2) are satisfied: [(GRA+RA)/(X)]?0.4??(1) [(GRA)/(RA)]?1.0??(2) wherein GRA represents the weight percentage of the ?-1,4-galactosyl rebaudioside A having one to three ?-1,4-bonded galactosyl groups in a molecule, RA represents the weight percentage of the rebaudioside A, and X represents the weight percentage of the steviol glucosides.Type: GrantFiled: September 18, 2002Date of Patent: September 11, 2007Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Masato Kitazume, Tadashi Katabami