Patents by Inventor Takahisa Miyawaki
Takahisa Miyawaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100022745Abstract: A one component resin composition curable with a combination of light and heat, which comprises (1) an epoxy resin, (2) an acrylic ester monomer and/or methacrylic ester monomer, or an oligomer thereof, (3) a latent epoxy curing agent, (4) a photo radical initiator, and (5) a compound having two or more thiol groups per molecule, wherein the ingredient (5) is contained in an amount of 0.001 to 5.0 parts by weight per 100 parts by weight of this resin composition. According to the present invention, a one component resin composition curable with a combination of light and heat, which has excellent curability especially in a light-shielded area can be provided. Also, a liquid crystal sealant composition curable with a combination of light and heat, which is applicable to the one-drop-fill method and has excellent curability in light-shielded areas and adhesion reliability, especially high-temperature and high-humidity adhesion reliability, can be provided.Type: ApplicationFiled: October 2, 2009Publication date: January 28, 2010Applicants: MITSUI CHEMICALS, INC., SHARP KABUSHIKI KAISHAInventors: Fumito Takeuchi, Takahisa Miyawaki, Kenji Itou, Kenichi Yashiro, Kei Nagata, Souta Itou, Tazo Ikeguchi, Nobuo Sasaki, Makoto Nakahara
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Patent number: 7566377Abstract: A liquid crystal sealing agent composition that is a one-component light and heat-curable resin composition containing: (1) a solid epoxy resin having a ring and ball method softening temperature of 40° C. or above; (2) an acrylate monomer and/or a methacrylate monomer, or an oligomer thereof; (3) a thermoplastic polymer having a ring and ball method softening temperature of 50 to 120° C., the thermoplastic polymer being obtained by copolymerizing an acrylate monomer and/or a methacrylate monomer with a monomer copolymerizable therewith; (4) a light-activated radical polymerization initiator; and (5) a latent epoxy curing agent.Type: GrantFiled: September 19, 2003Date of Patent: July 28, 2009Assignees: Mitsui Chemicals, Inc., Sharp Kabushiki KaishaInventors: Takahisa Miyawaki, Yasushi Mizuta, Fumito Takeuchi, Kenji Itou, Tadashi Kitamura, Hiroyuki Asakura, Kenichi Yashiro, Kei Nagata
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Patent number: 7438958Abstract: The present invention provides a liquid crystal sealing composition and a liquid crystal display panel excellent in adhesion, moisture permeation resistance and heat resistance and superior for use in a sheet press heating bonding system. The liquid crystal sealing composition comprises (1) an alkoxysilyl group-containing modified epoxy resin obtained by de-alcohol condensation reaction of (a) an epoxy resin having at least one hydroxyl group in one molecule and (b) an alkoxysilyl group-containing compound, (2) a heat latent epoxy curing agent, (3) a filler having an average particle diameter of 0.1 to 10 ?m, and if necessary (4) an epoxy resin having at least 1.2 epoxy groups on average in one molecule, (5) an aprotic solvent having a boiling point in the range of 140 to 220° C., compatible with epoxy resin and inert to an epoxy group, and (6) other additives.Type: GrantFiled: October 24, 2003Date of Patent: October 21, 2008Assignee: Mitsui Chemicals, Inc.Inventors: Takahisa Miyawaki, Kenichi Yashiro, Kei Nagata
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Publication number: 20070096056Abstract: A one component resin composition curable with a combination of light and heat, which comprises (1) an epoxy resin, (2) an acrylic ester monomer and/or methacrylic ester monomer, or an oligomer thereof, (3) a latent epoxy curing agent, (4) a photo radical initiator, and (5) a compound having two or more thiol groups per molecule, wherein the ingredient (5) is contained in an amount of 0.001 to 5.0 parts by weight per 100 parts by weight of this resin composition. According to the present invention, a one component resin composition curable with a combination of light and heat, which has excellent curability especially in a light-shielded area can be provided. Also, a liquid crystal sealant composition curable with a combination of light and heat, which is applicable to the one-drop-fill method and has excellent curability in light-shielded areas and adhesion reliability, especially high-temperature and high-humidity adhesion reliability, can be provided.Type: ApplicationFiled: November 25, 2004Publication date: May 3, 2007Applicants: MITSUI CHEMICALS, INC., SHARP KABUSHIKI KAISHAInventors: Fumito Takeuchi, Takahisa Miyawaki, Kenji Itou, Kenichi Yashiro, Kei Nagata, Souta Itou, Tazo Ikeguchi, Nobuo Sasaki, Makoto Nakahara
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Publication number: 20060009579Abstract: A liquid crystal sealing agent composition that is a one-component light and heat-curable resin composition containing: (1) a solid epoxy resin having a ring and ball method softening temperature of 40° C. or above; (2) an acrylate monomer and/or a methacrylate monomer, or an oligomer thereof; (3) a thermoplastic polymer having a ring and ball method softening temperature of 50 to 120° C., the thermoplastic polymer being obtained by copolymerizing an acrylate monomer and/or a methacrylate monomer with a monomer copolymerizable therewith; (4) a light-activated radical polymerization initiator; and (5) a latent epoxy curing agent.Type: ApplicationFiled: September 19, 2003Publication date: January 12, 2006Applicant: MITSUI CHEMICALS AND AND SHARP KABUSHIKI KAISHAInventors: Takahisa Miyawaki, Yasushi Mizuta, Fumito Takeuchi, Kenji Itou, Tadashi Kitamura, Hiroyuki Asakura, Kenichi yashiro, Kei Nagata
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Publication number: 20060006362Abstract: The present invention provides a liquid crystal sealing composition and a liquid crystal display panel excellent in adhesion, moisture permeation resistance and heat resistance and superior for use in a sheet press heating bonding system. The liquid crystal sealing composition comprises (1) an alkoxysilyl group-containing modified epoxy resin obtained by de-alcohol condensation reaction of (a) an epoxy resin having at least one hydroxyl group in one molecule and (b) analkoxysilyl group-containing compound, (2) a heat latent epoxy curing agent, (3) a filler having an average particle diameter of 0.1 to 10 ?m, and if necessary (4) an epoxy resin having at least 1.2 epoxy groups on average in one molecule, (5) an aprotic solvent having a boiling point in the range of 140 to 220° C., compatible with epoxy resin and inert to an epoxy group, and (6) other additives.Type: ApplicationFiled: October 24, 2003Publication date: January 12, 2006Applicant: Mitsui Chemicals, Inc.Inventors: Takahisa Miyawaki, Kenichi Yashiro, Kei Nagata
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Patent number: 6388012Abstract: A thermosetting powder paint composition comprising (A) a resin composition component, (B) a hardener component and (C) a solid flow controlling component, wherein the component (A) contains a resin composition component having reactivity with the component (B), the component (B) contains a hardener having reactivity with the component (A), the component (C) contains a vinyl polymer which is solid at 20° C., and the relation between SPA of the component (A) and SPC of the component (C) satisfies the following numerical formula (1) and the following numerical formula (2) simultaneously. By this constitution, excellent blocking-resistance in storing as the powder paint composition and excellent appearance properties of a paint film formed by coating the powder paint composition can be simultaneously manifested. 8≦SPA≦13 (1) 7≦SPC≦SPA (2).Type: GrantFiled: April 4, 2000Date of Patent: May 14, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Hiroyuki Sakayama, Yoshio Kikuta, Mitsuyuki Mizoguchi, Takahisa Miyawaki, Tsuyoshi Matsumoto
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Patent number: 6359067Abstract: A thermosetting powder coating composition which comprises a resin composition (A) having a sea-island type microphase separation structure constituted of a continuous phase (a sea phase) comprising an acrylic copolymer and a dispersion phase (an island phase) comprising a thermoplastic elastomer and a curing agent (B) and in which the total amount of a thermosetting elastomer (a-2) constituting the dispersion phase is in the range of 0.5 to 20 parts by weight with respect to 100 parts by weight of the resin composition (A). This powder coating composition is excellent in chipping resistance, impact resistance, weathering resistance and appearance properties, and it is particularly suitable for the coating of vehicles.Type: GrantFiled: December 23, 1999Date of Patent: March 19, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Takahisa Miyawaki, Yoshio Kikuta, Mitsuyuki Mizoguchi, Hiroyuki Sakayama, Tsuyoshi Matsumoto
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Patent number: 6333380Abstract: There are disclosed a thermosetting resin composition for a powder paint in which a resin composition component (A) is a (block) copolymer obtained by allowing a vinyl-based polymer G (branch) block (component (a-1)) to graft-react with a vinyl-based polymer S (back bone) block (component (a-2)), and if the solubility parameters of the components (a-1) and (a-2) are represented by SPG and SPG, respectively, SPG and SPS satisfy the following numerical formula (I), and a thermosetting powder paint composition comprising a resin composition component (A) and a hardener composition component (B) wherein the component (A) is said thermosetting resin composition for a powder paint. By these compositions, a thermosetting powder paint composition having excellent storage stabilities, appearance properties, physical properties and chemical properties can be provided.Type: GrantFiled: February 2, 2000Date of Patent: December 25, 2001Assignee: Mitsui Chemicals, Inc.Inventors: Hiroyuki Sakayama, Yoshio Kikuta, Mitsuyuki Mizoguchi, Takahisa Miyawaki, Tsuyoshi Matsumoto
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Patent number: 6121378Abstract: A thermosetting powder paint composition for top coating excellent in weather resistance and storage stability, which comprising 100 parts by weight of an acrylic copolymer (A) having an epoxy group, and 0.01 to 2.0 parts by weight of an organic modified polysiloxane (B) containing at least one functional group, at least two silicon atoms and no radical-polymerizable unsaturated bond wherein the component (B) is contained in the condition that a part or all thereof has reacted and bonded with the component (A) or the component (C), or all thereof has not reacted with them.Type: GrantFiled: August 19, 1998Date of Patent: September 19, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Takahisa Miyawaki, Yoshio Kikuta, Mitsuyuki Mizoguchi, Hiroyuki Sakayama, Tsuyoshi Matsumoto
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Patent number: 6084009Abstract: A thermosetting powder paint composition comprising:(A) a (meth)acrylic copolymer having glycidyl groups;(B) a polybasic carboxylic acid and/or polybasic carboxylic anhydride; and(C) particles having a core/shell structure each comprising a core having Tg of 20.degree. C. or below, the core being covered at least partially with a shell having Tg of 40.degree. C. or above, and said shell having no glycidyl group.The paint composition is excellent in weather resistance as well as in impact resistance and chipping resistance.Type: GrantFiled: April 23, 1997Date of Patent: July 4, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Mitsuyuki Mizoguchi, Yoshiro Fuseya, Yoshihiro Fujita, Yukiatsu Ishino, Masashi Seki, Takahisa Miyawaki
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Patent number: 6008301Abstract: A thermosetting powder paint composition is disclosed which can realize simultaneous manifestation of I) excellent stability before film forming (in storage), II) excellent low temperature melting property/low temperature curing property in forming a film, and III) excellent film properties and physical properties after film forming;and which comprises (A) a copolymer component which is obtained by radical polymerization in a reaction system containing (a-1) an ethylenically unsaturated monomer having a glycidyl group and a unsaturated double bond in the molecule, (a-2) styrene, and (a-3) the other monomer in a specific condition, (B) a curing agent component which is a linear acid anhydride of an aliphatic divalent carboxylic acid having a specific structure, and (C) a curing catalyst component having a specific structure.Type: GrantFiled: November 13, 1997Date of Patent: December 28, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Takahisa Miyawaki, Tsuyoshi Matsumoto, Mitsuyuki Mizoguchi, Masashi Seki, Eiichi Kawasaki
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Patent number: 5728790Abstract: The present invention relates to a thermosetting powder paint comprising, as essential components, (A) a copolymer of particular composition composed of a glycidyl group-containing monomer, styrene and other monomer copolymerizable therewith and, as curing agents capable of reacting with the component (A) to crosslink the component (A), (B) an aliphatic polycarboxylic acid and (C) a linear anhydride of an aliphatic polycarboxylic acid; a coating method using the above thermosetting powder paint; and a coated article obtained by using the above thermosetting powder paint. The above thermosetting powder paint, when used as a paint for automobile, has excellent storage stability and gives a coating film having excellent appearance, properties, weathering resistance and yellowing resistance; therefore, the paint can be favorably used particularly as an top coat and an intermediate coat for automobile and its parts.Type: GrantFiled: August 3, 1995Date of Patent: March 17, 1998Assignee: Mitsui Toatsu Chemicals, IncInventors: Masashi Seki, Eiichi Kawasaki, Takayoshi Sekido, Mitsuyuki Mizoguchi, Takahisa Miyawaki, Kousuke Suewaka