Patents by Inventor Seiichirou Takabayashi
Seiichirou Takabayashi 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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Patent number: 9418772Abstract: The present invention relates to a binder resin composition for an electrode, including a polyamic acid and a solvent, wherein the polyamic acid is (i) a polyamic acid which includes a tetracarboxylic acid component including 10 to 100 mol % of 4,4?-oxydiphthalic acid and 90 to 0 mol % of 3,3?,4,4?-biphenyltetracarboxylic acid and/or pyromellitic acid and a diamine component including an aromatic diamine having 1 to 4 aromatic rings, (ii) a polyamic acid which includes a tetracarboxylic acid component including 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride and a diamine component including 10 to 90 mol % of p-phenylene diamine and 90 to 10 mol % of 4,4?-diaminodiphenyl ether, or (iii) a polyamic acid which includes a tetracarboxylic acid component including 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride and a diamine component including 40 mol % or more of a bis[4-(4-aminophenoxy)phenyl] compound.Type: GrantFiled: September 22, 2010Date of Patent: August 16, 2016Assignee: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Tomonori Nakayama, Seiichirou Takabayashi, Tetsuji Hirano
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Patent number: 9115250Abstract: In a first step, a diamine is reacted with a molar excess of a tetracarboxylic dianhydride in a solvent containing more than ? mole of water per mole of the tetracarboxylic dianhydride, whereby preparing a polyamic acid solution. Subsequently, in a second step, a diamine and/or a tetracarboxylic dianhydride are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diamine and the tetracarboxylic dianhydride are reacted, whereby preparing a polyamic acid solution. By this process, a polyamic acid solution having a high concentration and a low viscosity may be reproducibly and reliably produced, while controlling the molecular weight of the polyamic acid to a predetermined low level.Type: GrantFiled: November 12, 2007Date of Patent: August 25, 2015Assignee: UBE Industries, Ltd.Inventors: Tooru Murakami, Seiichirou Takabayashi
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Patent number: 9012537Abstract: There may be provided a process for producing a polyimide siloxane solution composition having a further improved long-term viscosity stability; and a polyimide siloxane solution composition. In the process for producing the polyimide siloxane solution composition by polymerizing/imidizing a tetracarboxylic acid component and a diamine component consisting of (a) a diaminopolysiloxane, (b) a diamine having a polar group and (c) a diamine other than (a) and (b) in a solvent, the tetracarboxylic acid component and the diamine component excluding (b) the diamine having a polar group are polymerized/imidized to provide a reaction mixture solution, and then (b) the diamine having a polar group is added to the reaction mixture solution last, and the mixture is polymerized/imidized.Type: GrantFiled: August 17, 2010Date of Patent: April 21, 2015Assignee: Ube Industries, Ltd.Inventors: Susumu Takasaki, Hiroo Yamashita, Seiichirou Takabayashi, Tomoko Hayashida, Mitsuo Yamanaka, Takafumi Hirakawa
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Patent number: 8906463Abstract: Disclosed is a method for producing a polyimide film, wherein a polyamic acid solution composition is coated on a base material and the resultant coating film is processed by heat treatment; the polyamic acid solution composition is obtained by introducing a specific chemical structure into a polyamic acid at a ratio within a specific range; and the polyamic acid has a chemical structure composed of a 3,3?,4,4?-biphenyltetracarboxylic acid component and/or a pyromellitic acid component, and a paraphenylenediamine component. Also disclosed is the polyamic acid solution composition.Type: GrantFiled: May 18, 2007Date of Patent: December 9, 2014Assignee: Ube Industries, Ltd.Inventors: Seiichirou Takabayashi, Tooru Murakami
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Patent number: 8816017Abstract: Disclosed is a process for producing a polyamic acid solution by reacting a diamine component consisting essentially of 20 mol % to 80 mol % of p-phenylenediamine and 80 mol % to 20 mol % of diaminodiphenyl ether with a tetracarboxylic acid component consisting essentially of 10 mol % to 60 mol % of 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 90 mol % to 40 mol % of 3,3?,4,4?-biphenyltetracarboxylic dianhydride in a solvent, comprising: a first step in which a diamine component is reacted with a molar excess of a tetracarboxylic acid component in a solvent containing more than ? mole of water per mole of the tetracarboxylic acid component, whereby preparing a polyamic acid solution; and a second step in which a diamine component, or a diamine component and a tetracarboxylic acid component are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diaType: GrantFiled: December 1, 2008Date of Patent: August 26, 2014Assignee: UBE Industries, Ltd.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
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Patent number: 8735467Abstract: A process for producing a pigment-containing curable resin solution composition which comprises a pigment and a modified polysiloxane is disclosed. The process comprises the steps of: (a) preparing a pigment-dispersed liquid, wherein a pigment is dispersed in an organic solvent in the presence of a first modified polysiloxane; and (b) mixing the pigment-dispersed liquid with a resin solution which comprises at least a second modified polysiloxane. This process provides a pigment-containing curable resin solution composition with excellent dispersion stability of pigment.Type: GrantFiled: June 26, 2009Date of Patent: May 27, 2014Assignee: Ube Industries, Ltd.Inventors: Tooru Murakami, Koji Hayashi, Seiichirou Takabayashi, Nobuhiro Shigetomi
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Publication number: 20120168688Abstract: The present invention relates to a binder resin composition for an electrode, including a polyamic acid and a solvent, wherein the polyamic acid is (i) a polyamic acid which includes a tetracarboxylic acid component including 10 to 100 mol % of 4,4?-oxydiphthalic acid and 90 to 0 mol % of 3,3?,4,4?-biphenyltetracarboxylic acid and/or pyromellitic acid and a diamine component including an aromatic diamine having 1 to 4 aromatic rings, (ii) a polyamic acid which includes a tetracarboxylic acid component including 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride and a diamine component including 10 to 90 mol % of p-phenylene diamine and 90 to 10 mol % of 4,4?-diaminodiphenyl ether, or (iii) a polyamic acid which includes a tetracarboxylic acid component including 3,3?,4,4?-biphenyltetracarboxylic acid dianhydride and a diamine component including 40 mol % or more of a bis[4-(4-aminophenoxy)phenyl] compound.Type: ApplicationFiled: September 22, 2010Publication date: July 5, 2012Applicant: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Tomonori Nakayama, Seiichirou Takabayashi, Tetsuji Hirano
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Publication number: 20120104310Abstract: There is provided a filler-containing dispersion solution exhibiting very improved filler dispersion stability by dispersing a filler in a solvent using a polyimide precursor solution composition. Furthermore, in the filler-containing dispersion solution, a tetracarboxylic dianhydride and/or its derivative is reacted with a diamine compound to prepare a filler-containing polyimide precursor solution composition, which is then used to provide a polyimide in which a filler is dispersed.Type: ApplicationFiled: June 28, 2010Publication date: May 3, 2012Applicant: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tomonori Nakayama
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Publication number: 20100305295Abstract: Disclosed is a process for producing a polyamic acid solution by reacting a diamine component consisting essentially of 20 mol % to 80 mol % of p-phenylenediamine and 80 mol % to 20 mol % of diaminodiphenyl ether with a tetracarboxylic acid component consisting essentially of 10 mol % to 60 mol % of 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 90 mol % to 40 mol % of 3,3?,4,4?-biphenyltetracarboxylic dianhydride in a solvent, comprising: a first step in which a diamine component is reacted with a molar excess of a tetracarboxylic acid component in a solvent containing more than ? mole of water per mole of the tetracarboxylic acid component, whereby preparing a polyamic acid solution; and a second step in which a diamine component, or a diamine component and a tetracarboxylic acid component are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diaminType: ApplicationFiled: December 1, 2008Publication date: December 2, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
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Publication number: 20100291377Abstract: Disclosed is a method for producing a polyimide film, wherein a polyamic acid solution composition is coated on a base material and the resultant coating film is processed by heat treatment; the polyamic acid solution composition is obtained by introducing a specific chemical structure into a polyamic acid at a ratio within a specific range; and the polyamic acid has a chemical structure composed of a 3,3?,4,4?-biphenyltetracarboxylic acid component and/or a pyromellitic acid component, and a paraphenylenediamine component. Also disclosed is the polyamic acid solution composition.Type: ApplicationFiled: May 18, 2007Publication date: November 18, 2010Inventors: Seiichirou Takabayashi, Tooru Murakami
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Publication number: 20100207293Abstract: A process of producing a polyimide film including applying a polyamic acid solution composition to a substrate to form a coating layer and heating the coating layer, wherein the polyamic acid solution composition contains a mixed solvent system of at least two solvents selected from N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, and 1,3-dimethyl-2-imidazolidinone, each solvent being present in a proportion ranging from 7% to 93% based on the total mixed solvent system, and a polyamic acid composed mainly of s-BPDA and PPD. The process enables a film with a thickness exceeding 40 ?m to be formed without involving bubble formation.Type: ApplicationFiled: September 22, 2008Publication date: August 19, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Takeshige Nakayama, Seiichirou Takabayashi, Tooru Murakami
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Publication number: 20100130628Abstract: Disclosed is an aromatic polyimide having extremely high stiffness and extremely high gas barrier property, which is prepared from a tetracarboxylic acid component consisting essentially of 25 mol % to 97 mol % of 3,3?,4,4?-biphenyltetracarboxylic acid and 75 mol % to 3 mol % of 4,4?-oxydiphthalic acid based on 100 mol % of the total amount of the tetracarboxylic acid component, and a diamine component consisting essentially of p-phenylenediamine.Type: ApplicationFiled: March 31, 2008Publication date: May 27, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Hiroaki Yamaguchi, Seiichirou Takabayashi, Tooru Murakami, Takeshige Nakayama
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Publication number: 20100056718Abstract: In a first step, a diamine is reacted with a molar excess of a tetracarboxylic dianhydride in a solvent containing more than ? mole of water per mole of the tetracarboxylic dianhydride, whereby preparing a polyamic acid solution. Subsequently, in a second step, a diamine and/or a tetracarboxylic dianhydride are added to the polyamic acid solution obtained in the first step so that the molar amount of the diamine component is substantially equal to the molar amount of the tetracarboxylic acid component, and then the diamine and the tetracarboxylic dianhydride are reacted, whereby preparing a polyamic acid solution. By this process, a polyamic acid solution having a high concentration and a low viscosity may be reproducibly and reliably produced, while controlling the molecular weight of the polyamic acid to a predetermined low level.Type: ApplicationFiled: November 12, 2007Publication date: March 4, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Tooru Murakami, Seiichirou Takabayashi
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Publication number: 20090326106Abstract: A process for producing a pigment-containing curable resin solution composition which comprises a pigment and a modified polysiloxane is disclosed. The process comprises the steps of: (a) preparing a pigment-dispersed liquid, wherein a pigment is dispersed in an organic solvent in the presence of a first modified polysiloxane; and (b) mixing the pigment-dispersed liquid with a resin solution which comprises at least a second modified polysiloxane. This process provides a pigment-containing curable resin solution composition with excellent dispersion stability of pigment.Type: ApplicationFiled: June 26, 2009Publication date: December 31, 2009Applicant: UBE INDUSTRIES, LTDInventors: Tooru MURAKAMI, Koji HAYASHI, Seiichirou TAKABAYASHI, Nobuhiro SHIGETOMI
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Patent number: 7491427Abstract: [PROBLEMS] To provide a polyimidesiloxane solution composition that is excellent in defoaming ability and that can maintain the wettability of an outer lead bonded portion on a wiring board at a high level, even when it is applied on the surface of the wiring board and then cured, to form an insulating cured film. [MEANS FOR SOLVING PROBLEMS] A polyimidesiloxane solution composition which comprises an organic solvent, polyimidesiloxane soluble in the organic solvent, a curable components such as an epoxy compound and a polyvalent isocyanate compound, and a silicone defoamer, wherein the silicone defoaming agent comprises dimethylpolysiloxane, a polysiloxane compound having a hydrophilic group in a side chain or a terminal moiety, and a micro-powder silica.Type: GrantFiled: February 21, 2005Date of Patent: February 17, 2009Assignee: UBE Industries, Ltd.Inventors: Koji Hayashi, Yoshiki Tanaka, Katsutoshi Hirashima, Seiichirou Takabayashi
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Publication number: 20070185286Abstract: [PROBLEMS] To provide a polyimidesiloxane solution composition that is excellent in defoaming ability and that can maintain the wettability of an outer lead bonded portion on a wiring board at a high level, even when it is applied on the surface of the wiring board and then cured, to form an insulating cured film. [MEANS FOR SOLVING PROBLEMS] A polyimidesiloxane solution composition which comprises an organic solvent, polyimidesiloxane soluble in the organic solvent, a curable components such as an epoxy compound and a polyvalent isocyanate compound, and a silicone defoamer, wherein the silicone defoaming agent comprises dimethylpolysiloxane, a polysiloxane compound having a hydrophilic group in a side chain or a terminal moiety, and a micro-powder silica.Type: ApplicationFiled: February 21, 2005Publication date: August 9, 2007Applicant: UBE INDUSTRIES, LTD.Inventors: Koji Hayashi, Yoshiki Tanaka, Katsutoshi Hirashima, Seiichirou Takabayashi
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Patent number: 5728473Abstract: An adhesive polyimide composition comprises 100 weight parts of a polyimide siloxane having a Tg of not lower than 200.degree. C. and 0.2 to 5 weight parts of a silane coupling agent having a glycidyl group. An epoxy resin may be incorporated into the polyimide composition. The polyimide siloxane is prepared by polymerization reaction of an aromatic tetracarboxylic acid dianhydride or its derivative and a diamine composition comprising 5 to 25 mol. % of a specific diaminosiloxane and 75 to 95 mol. % of an aromatic diamine having at least two benzene rings and one oxygen atom intervening these benzene rings. The adhesive polyimide composition is generally employed in the form of a solution in an organic solvent and for combining electrically conductive or insulating members.Type: GrantFiled: November 20, 1995Date of Patent: March 17, 1998Assignee: Ube Industries, Ltd.Inventors: Hiroshi Inoue, Seiichirou Takabayashi, Tadao Muramatu, Kenji Sonoyama
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Patent number: 5262227Abstract: An aromatic polyimide film directly laminated with a metal foil and an aromatic polyimide film directly laminated on both sides with a metal foil wherein the polyimide film (substrate) comprises an aromatic polyimide layer-A of 6-200 .mu.m thick whose polyimide is derived from a biphenyltetracarboxylic acid or its derivative and a phenylenediamine and an aromatic polyimide layer-B of 0.2-15 .mu.m thick whose polyimide is derived from an aromatic tetracarboxylic acid or its derivative and an aromatic diamine having plural benzene rings, and the polyimide layer-A has a thickness of not less than 55% of the total thickness of the aromatic polyimide substrate film, the polyimide layer-B is fixed to the polyimide layer-A under the condition that the layer-B cannot be peeled from the layer-A along the interface between these layers-A and -B and the metal foil is directly fixed on the surface of the polyimide layer-B via no adhesive.Type: GrantFiled: May 30, 1991Date of Patent: November 16, 1993Assignee: Ube Industries, Ltd.Inventors: Seiichirou Takabayashi, Katsuo Imatani, Kazuaki Mii, Shuji Watakabe
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Patent number: 5180627Abstract: The disclosed heat resistant adhesive composition comprises a polyimidesiloxane obtained from a biphenyltetracarboxylic acid or its derivative and a diamine composition comprising a diaminopolysiloxane and an aromatic diamine, an epoxy compound having an epoxy group, and an epoxy compound-hardening agent. An adhesive film and a composite sheet utilizing the heat resistant resinous composition are also disclosed.Type: GrantFiled: December 2, 1991Date of Patent: January 19, 1993Assignee: Ube Industries, Ltd.Inventors: Hiroshi Inoue, Seiichirou Takabayashi, Tadao Muramatsu, Tsutomu Funagoshi, Tetsuji Hirano
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Patent number: 5130192Abstract: A process for preparing a metallized polyimide film, comprising the steps of: forming a solidified film containing 100 parts by weight of an aromatic polyamic acid in the form of a solution obtained by polymerizing approximately equal moles of an aromatic tetracarboxylic acid component and an aromatic diamine component and 5 to 150 parts by weight of an organic polar solvent; applying a surface treatment solution containing a heat-resistant surface treating agent to the surface of the solidified film; heating the solidified film to a high temperature to imidize the polyamic acid, while drying the film to prepare a polyimide film; forming a thin metal vapor-deposited layer by a vapor deposition of a metal on the treated surface of the polyimide film with the heat-resistant surface treatment agent; and applying metal plating onto the metal vapor deposited layer to form a metal plated layer thereon.Type: GrantFiled: November 15, 1990Date of Patent: July 14, 1992Assignee: Ube Industries, Ltd.Inventors: Seiichirou Takabayashi, Kazuaki Mii, Kenichiro Yano