Patents Assigned to Kawamura Institute of Chemical Research
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Publication number: 20100104810Abstract: An organic/inorganic composite coating film comprising an inorganic material as a matrix and an organic material combined therewith. The coating film has a regular hollow structure therein, and the coating film surface has a rugged pattern with semispherical protrusions. Also provided is a large-area structural color film obtained by burning the composite coating film. The organic/inorganic composite coating film is obtained by applying an aqueous coating composition comprising a metal alkoxide, an aqueous dispersion of monodisperse polymer particles, and an acid catalyst to a substrate and curing the coating composition. Burning the organic/inorganic composite coating film gives the structural color film.Type: ApplicationFiled: March 6, 2008Publication date: April 29, 2010Applicants: KAWAMURA INSTITUTE OF CHEMICAL RESEARCH, DIC CORPORATIONInventors: Norimasa Fukazawa, Ren-Hua Jin
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Publication number: 20100062928Abstract: The present invention provides a doped titanium oxide having visible light-responsiveness whose structure is specified, and a simple production method thereof. By burning with heat a layered structure composite laminated alternately with polymer and the titania, which is obtained using basic polymer having amino group(s) and water-soluble titanium compound, carbon atoms and nitrogen atoms in the polymer are, doped to the crystalline surface of titanium oxide. As making the polymer complex with metal ions beforehand, the metal ions can be also doped to the titanium oxide.Type: ApplicationFiled: December 10, 2007Publication date: March 11, 2010Applicants: KAWAMURA INSTITUTE OF CHEMICAL RESEARCH, DIC CorporationInventors: Ren-Hua Jin, Pei-Xin Zhu, Norimasa Fukazawa
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Patent number: 7670509Abstract: A silica nanofiber is derived from a crystalline polymer filament of a polymer including straight chain polyethyleneimine backbones, which is capable of forming a water-insoluble crystal in the presence of water molecules at room temperature, and the crystalline polymer filament in the silica concentrates metal ions, thereby realizing a composite nanofiber including metals or metal ions in the silica. Furthermore, the composite nanofiber of the present invention can be easily produced by fixing a polymer structure in the silica as the scaffold for metal ions and concentrating metal ions at the scaffold or reducing the metal ions. Furthermore, a metal-containing silica nanofiber can be easily obtained by removing a polymer component from the composite nanofiber, the composite nanofiber association, and the complex nanofiber structure. These nanofibers can be assembled and integrated, and the assembled or integrated association or structure can realize various shapes.Type: GrantFiled: May 27, 2005Date of Patent: March 2, 2010Assignee: Kawamura Institute of Chemical ResearchInventors: Ren-Hua Jin, Jian-Jun Yuan
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Patent number: 7649041Abstract: An aqueous coating composition comprising a hydrophilic cationic polymer having an amino group (A), nonionic polyalcohol (B), a tri- or more valent silane compound (C), and water (D). According to the aqueous coating composition of the present invention, it is possible to produce an organic and inorganic hybrid coating film having a high degree of hardness and excellent abrasion resistance in relative mild production conditions by a simple method.Type: GrantFiled: June 23, 2005Date of Patent: January 19, 2010Assignees: DIC Corporation, Kawamura Institute of Chemical ResearchInventors: Hirohide Nakaguma, Ren-Hua Jin, Seungtaeg Lee
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Patent number: 7645828Abstract: Monodisperse silica spheres containing polyamine, which comprise a polymer (A) having a linear polyethyleneimine chain, a compound (B) having an acidic group, and silica (C).Type: GrantFiled: March 29, 2006Date of Patent: January 12, 2010Assignee: Kawamura Institute of Chemical ResearchInventors: Ren-Hua Jin, Jian-Jun Yuan
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Publication number: 20090291500Abstract: The present invention provides a production process of an organic/inorganic composite hydrogel, which demonstrates superior mechanical properties, by uniformly dispersing a clay mineral in an organic polymer over a wide range of clay mineral content, and a dried form thereof, to be produced easily in a short period of time. The production process of an organic/inorganic composite hydrogel of the present invention comprises reacting a water-soluble organic monomer (a) in the presence of a water-swellable clay mineral (b) by irradiating with an energy beam in a solution in which a non-water-soluble polymerization initiator (d) is dispersed in an aqueous medium (c).Type: ApplicationFiled: December 13, 2005Publication date: November 26, 2009Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Tetsuo Takada, Kazutoshi Haraguchi, Tooru Takehisa
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Publication number: 20090155591Abstract: The present invention provides an organic-inorganic composite microparticle containing a metal complex, which has multiple needle-like structures on the surface and includes the metal complex therein; and a method for producing the microparticle in a simple manner. By using a metal complex made from a polymer having a linear polyethyleneimine chain and a metal ion, a composite microparticle which has the metal complex in silica and has a micro-needle-like structures on the surface can be derived, thus a microparticle having needle-like structures on the surface is obtained, wherein there are nano-sized multiple needle-like structures on the surface of the microparticle. The needle-like structures on the surface and the spatial structure of the resulting microparticle can be controlled by varying the species of the metal ion and the types of the substrate medium for the metal complex.Type: ApplicationFiled: July 19, 2006Publication date: June 18, 2009Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Ren-Hua Jin, Pei-Xin Zhu
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Patent number: 7514507Abstract: The present invention provides a comb-shaped epoxy resin represented by the following formula (1): in the formula (1), X1 and X2 represent a divalent group having a residue selected from xanthene residue, biphenylene residue, hydrogenated bisphenol residue, alkylene residue and polyoxyalkylene residue, each may having a methyl group or a ethyl group as a substituent, and at least one of them is an aromatic residue, Y represents a polymer chain such as linear polymer chain, a number average polymerization degree being 5 to 2000, and n (number average polymerization degree) represents an integer within a range of 3 to 200, and to a method for preparing the comb-shaped epoxy resin.Type: GrantFiled: March 23, 2005Date of Patent: April 7, 2009Assignees: Dainippon Ink and Chemicals, Inc., Kawamura Institute of Chemical ResearchInventors: Yuji Ohashi, Ren-Hua Jin, Seungtaeg Lee
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Publication number: 20090036591Abstract: Monodisperse silica spheres containing polyamine, which comprise a polymer (A) having a linear polyethyleneimine chain, a compound (B) having an acidic group, and silica (C).Type: ApplicationFiled: March 29, 2006Publication date: February 5, 2009Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Ren-Hua Jin, Jian-Jun Yuan
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Publication number: 20080248281Abstract: The organic-inorganic composite coating film of the present invention is a composite coating film wherein a complex having a polyamine segment is combined in a matrix composed of an inorganic oxide, and has a fine pore pattern on the surface. The aqueous coating composition of the present invention includes a copolymer having a polyamine segment, a metal alkoxide, and an aqueous medium.Type: ApplicationFiled: July 27, 2005Publication date: October 9, 2008Applicants: DAINIPPON INK & CHEMICALS, INC, KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Hirohide Nakaguma, Ren-Hua Jin, Seungtaeg Lee
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Patent number: 7378461Abstract: The invention relates to (1) a curable epoxy resin composition comprising (A) a non-gel type amine-modified epoxy resin which is obtained by reacting an epoxy resin with a polyamine and (B) at least one of boric acid and boric ester, (2) a powder form of the curable epoxy resin composition and a process for its production, and (3) a process for production of heat-resistant laminated sheets by using the curable epoxy resin composition. The invention provides (1) a curable epoxy resin composition capable of giving a cured article having a high glass transition temperature and excellent mechanical properties, (2) a powder form of curable epoxy resin composition having a high glass transition temperature, excellent mechanical properties and excellent storage stability and a process for its production, and (3) heat-resistant laminated sheets made by using the curable epoxy resin compositions and having excellent heat resistance and mechanical properties.Type: GrantFiled: October 31, 2002Date of Patent: May 27, 2008Assignee: Kawamura Institute of Chemical ResearchInventors: Kazutoshi Haraguchi, Akira Ohbayashi
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Patent number: 7365120Abstract: A polymer composite and a stretched product thereof formed from a three dimensional network structure including an organic polymer (A), comprising either a polymer produced from a water soluble (meth)acrylate ester (a), or a copolymer of a water soluble (meth)acrylate ester (a) and at least one compound selected from a group consisting of (meth)acrylamide and N-substituted (meth)acrylamides (b), and a water swelling clay mineral (B).Type: GrantFiled: April 16, 2004Date of Patent: April 29, 2008Assignee: Kawamura Institute of Chemical ResearchInventors: Kazutoshi Haraguchi, Toru Takehisa, Makiko Ebato
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Patent number: 7357864Abstract: The object of the present invention is to provide a production process of a microfluidic device in which a porous resin layer, which is capable of optimally fixing a large amount of enzyme, antigen or other protein or catalyst on the inner surface of a minute channel of a microfluidic device without obstructing said channel, is formed at a uniform thickness on the surface of said channel. In the present invention, by preliminarily forming a porous resin layer having a large number of pores in its surface on a substrate, and forming an indentation having a porous resin layer on its bottom surface by using an activating energy beam-curable composition on said porous resin layer, followed by forming a channel by adhering a member serving as a cover to said indentation, a porous resin layer can easily be formed at a uniform thickness on the surface of said channel.Type: GrantFiled: March 10, 2004Date of Patent: April 15, 2008Assignee: Kawamura Institute of Chemical ResearchInventors: Tetsuo Takada, Takanori Anazawa, Atsushi Teramae
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Publication number: 20080058499Abstract: The three-dimensional periodic structure of the present invention comprises a matrix made of an inorganic oxides in which core-shell particles are disposed so as to contact with each other, the core-shell particles each comprising a core portion made of a fine particle and a shell portion made of a crosslinked hydrophilic organic polymer backbones, wherein the hydrophilic organic polymer backbones and the inorganic oxides hybridize into an organic/inorganic a composite.Type: ApplicationFiled: August 7, 2007Publication date: March 6, 2008Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Norimasa Fukazawa, Ren-Hua Jin
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Publication number: 20070197708Abstract: A silica nanofiber is derived from a crystalline polymer filament of a polymer including straight chain polyethyleneimine backbones, which is capable of forming a water-insoluble crystal in the presence of water molecules at room temperature, and the crystalline polymer filament in the silica concentrates metal ions, thereby realizing a composite nanofiber including metals or metal ions in the silica. Furthermore, the composite nanofiber of the present invention can be easily produced by fixing a polymer structure in the silica as the scaffold for metal ions and concentrating metal ions at the scaffold or reducing the metal ions. Furthermore, a metal-containing silica nanofiber can be easily obtained by removing a polymer component from the composite nanofiber, the composite nanofiber association, and the complex nanofiber structure. These nanofibers can be assembled and integrated, and the assembled or integrated association or structure can realize various shapes.Type: ApplicationFiled: May 27, 2005Publication date: August 23, 2007Applicant: KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Ren-Hua Jin, Jian-Jun Yuan
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Publication number: 20070166472Abstract: The present invention relates to an organic-inorganic hybrid nanofiber formed from a crystalline polymer filament made of a polymer having a straight-chain polyethyleneimine skeleton, and a silica covering the aforementioned crystalline polymer filament, a structure formed from the aforementioned organic-inorganic hybrid nanofiber, and a method for producing the same.Type: ApplicationFiled: February 14, 2005Publication date: July 19, 2007Applicant: Kawamura Institute of Chemical ResearchInventors: Ren-Hua Jin, Jian-Jun Yuan
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Patent number: 7238325Abstract: There is provided a micro chemical device with a valve function for which the pressure resistance is high and the channel cross-sectional area does not depend on the fluid pressure, and which furthermore enables the suppression of the adsorption of biological matter and yet is easy to produce, as well as a flow regulation method using such a device. This has a valve function, in which a member (B) is bonded to a member (A) with a groove in the surface thereof, via the surface of the member (A) in which the groove is formed, a capillary type channel of width from 1 to 1000 ?m and height from 1 to 1000 ?m is formed by the groove of the member (A) and the member (B) at the bonding surface between the member (A) and the member (B), a cavity section is formed partway along the channel and the width of this cavity section is from 0.Type: GrantFiled: March 1, 2001Date of Patent: July 3, 2007Assignee: Kawamura Institute of Chemical ResearchInventors: Takanori Anazawa, Atsushi Teramae
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Publication number: 20070142611Abstract: The present invention provides a comb-shaped epoxy resin represented by the following formula (1): in the formula (1), X1 and X2 represent a divalent group having a residue selected from xanthene residue, biphenylene residue, hydrogenated bisphenol residue, alkylene residue and polyoxyalkylene residue, each may having a methyl group or a ethyl group as a substituent, and at least one of them is an aromatic residue, Y represents a polymer chain such as linear polymer chain, a number average polymerization degree being 5 to 2000, and n (number average polymerization degree) represents an integer within a range of 3 to 200, and to a method for preparing the comb-shaped epoxy resin.Type: ApplicationFiled: March 23, 2005Publication date: June 21, 2007Applicants: DAINIPPON INK AND CHEMICALS, INC., KAWAMURA INSTITUTE OF CHEMICAL RESEARCHInventors: Yuji Ohashi, Ren-Hua Jin, Seungtaeg Lee
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Patent number: 7220334Abstract: The present invention provides a method of manufacturing a microdevice having a fine capillary cavity formed as a cut portion of a very thin layer which is likely to be broken, particularly a method of manufacturing a microdevice having complicated passages formed in three dimensions with high productivity. Also, the present invention provides a multi-functional microdevice which has a fine capillary passage formed by laminating plural resin layers, fine capillary cavities piercing through the respective layers to communicate and intersect three-dimensionally with each other, a space which should serve as a reaction chamber, a diaphragm valve, and a stopper structure.Type: GrantFiled: June 20, 2001Date of Patent: May 22, 2007Assignee: Kawamura Institute of Chemical ResearchInventors: Takanori Anazawa, Atsushi Teramae
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Patent number: 7101630Abstract: An organic electroluminescent device is provided which has a high degree of adhesion between an anode and a hole transport layer, the device emitting light of high luminance even when driven by low applied voltages. Copolymers useful in hole transport layers in organic electroluminescent devices are also provided. Methods of producing hole transport layers for organic electroluminescent devices which can emit light of high luminance even when driven by low applied voltages are also provided, the hole transport layers having high degrees of adhesion with anode. A copolymer comprises a monomer unit including in its structure an electron-donating N,N-diaryl-substituted amino group such as an N,N-diphenylaminophenyl group, or a group having an N,N-diaryl-substituted amino moiety, and a monomer unit having at least one functional group.Type: GrantFiled: July 10, 2003Date of Patent: September 5, 2006Assignee: Kawamura Institute of Chemical ResearchInventor: Shinji Kato