Patents by Inventor Akihiro Kanakura
Akihiro Kanakura 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: 20080139736Abstract: The present invention provides an aqueous curable resin composition which can provide a coating film having an excellent finished external appearance, and is excellent in coating workability (drip property), and an aqueous coating composition using the aqueous curable resin composition. The aqueous curable resin composition of the present invention includes a (meth)acrylic-modified polyester resin, (meth)acrylic resin particles having an average particle diameter of 0.1 to 2 ?m, a melamine resin, and water.Type: ApplicationFiled: December 12, 2007Publication date: June 12, 2008Applicant: NIPPON PAINT CO., LTDInventors: Shinya Yamada, Koji Nishizawa, Akihiro Kanakura
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Patent number: 7144605Abstract: A curable coating composition comprises (a) a component having an active methylene group and/or an active methane group, (b) a component having a methacrylate group and/or an acrylate group, (c) a Michael reaction catalyst, and (d) a photo-polymerization initiator.Type: GrantFiled: May 28, 2004Date of Patent: December 5, 2006Assignee: Nippon Paint Co., Ltd.Inventors: Akihiro Kanakura, Takashi Irie, Hiroto Yoneda, Hisaki Tanabe
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Publication number: 20050181142Abstract: By forming an air flow in which a quantity and a blowoff angle of the air supplied toward an atomized spray paint flow don't influence a coating pattern, there are provided a coating apparatus and a coating method, each of which does not disturb the coating pattern, does not require conditions such as wind speed and temperature of a conventional coating booth, and can perform remarkable reduction in an air conditioning energy of the coating booth, prevention of scatter of a paint, and an improvement in a paint adhesion efficiency.Type: ApplicationFiled: October 29, 2004Publication date: August 18, 2005Inventors: Katsumi Hirano, Katsuhiro Takeshita, Akihiro Kanakura, Satoshi Yamasaki
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Publication number: 20040219381Abstract: The present invention is to provide a curable coating composition having much less of a volatile organic component, and being excellent in coating film performance such as durability and scratch resistance, and a coating film forming method using the above curable coating composition capable of suppressing generation of sagging and so on.Type: ApplicationFiled: May 28, 2004Publication date: November 4, 2004Applicant: NIPPON PAINT CO., LTD.Inventors: Akihiro Kanakura, Takashi Irie, Hiroto Yoneda, Hisaki Tanabe
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Publication number: 20030039757Abstract: The present invention provides a thermosetting coating composition having a storage stability sufficient to be formed into a one-pack coating despite a small content of organic solvent contained therein and having a sufficient curability, and a method of forming a coating film by which the content of the organic solvent present in a coating at the time of application can be reduced.Type: ApplicationFiled: March 27, 2002Publication date: February 27, 2003Applicant: NIPPON PAINT CO., LTD.Inventors: Hiroto Yoneda, Takashi Irie, Akihiro Kanakura, Yoshifumi Ichinose, Yuji Okura, Hideo Morimoto
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Publication number: 20020188072Abstract: The present invention is to provide a curable coating composition having much less of a volatile organic component, and being excellent in coating film performance such as durability and scratch resistance, and a coating film forming method using the above curable coating composition capable of suppressing generation of sagging and so on.Type: ApplicationFiled: March 26, 2002Publication date: December 12, 2002Applicant: NIPPON PAINT CO., LTD.Inventors: Akihiro Kanakura, Takashi Irie, Hiroto Yoneda, Hisaki Tanabe
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Patent number: 5418109Abstract: Disclosed is a preparation method of a toner comprising steps of:(a) preparing a dispersion mixture containing colored polymer particles, a charge controlling agent and organic resin fine particles, in an aqueous medium;(b) allowing said charge controlling agent and organic resin fine particles to be adhered on the surface of said colored polymer particles by salting-out;(c) drying said colored polymer particles having thereon said charge controlling agent and organic resin fine particles; and(d) applying mechanical impact to said colored polymer particles to effect a conversion of said organic resin fine particles into a film on the surfaces of said colored polymer particles.Type: GrantFiled: April 26, 1994Date of Patent: May 23, 1995Assignee: Nippon Paint CompanyInventors: Akihiro Kanakura, Yutaka Harada, Takehiro Ojima, Shinji Seo, Haruhiko Sato
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Patent number: 5384226Abstract: The present invention provides a process for producing toner particles having small particle size and small particle size distribution which uniformly contain a polyolefin wax in high yield by a simple process. That is, according to the present invention, there is provided a process for producing a toner which comprises dissolving or dispersing a polymerizable composition comprising:(I) a vinyl monomer,(II) an acrylic resin-grafted polyolefin, and(III) a colorantin a dispersion solvent and then polymerizing it, wherein no resin deposition occurs when the acrylic resin-grafted polyolefin (II) is dissolved or dispersed in a mixed solution of one volume of the vinyl monomer (I) and two or more volumes of the dispersion solvent.Type: GrantFiled: June 8, 1992Date of Patent: January 24, 1995Assignee: Nippon Paint Co., Ltd.Inventors: Akihiro Kanakura, Takahito Kishida, Naoya Yabuuchi, Masayuki Maruta
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Patent number: 5202215Abstract: The present invention provides a toner which substantially excludes off set and blocking of the toner particles, and a process for preparing the toner. The toner is prepared by dispersion-polymerizing a vinyl monomer in the presence of a dispersion polymerization stabilizer, a polymerization initiator and silicone-containing organic resin microparticles in a dispersion medium which dissolves said vinyl monomer, dispersion polymerization stabilizer and polymerization initiator and which does not dissolve said silicone-containing organic resin microparticles and resulting toner particles.Type: GrantFiled: March 7, 1991Date of Patent: April 13, 1993Assignee: Nippon Paint Co., Ltd.Inventors: Akihiro Kanakura, Koichi Fukuda, Chikayuki Otsuka, Masayuki Maruta, Naoya Yabuuchi
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Patent number: 5190844Abstract: The present invention provides an improved process for producing organic particles (e.g. toner particles) having uniform charge controlling coating and excellent charge controlling effect. In the process, a dispersion comprising the organic particles (A), a specific compound (B) forming insoluble substances upon reacting with an insolubilizer (D) and a dispersing medium is prepared and then reacted with the insolubilizer (D).Type: GrantFiled: December 6, 1991Date of Patent: March 2, 1993Assignee: Nippon Paint Co., Ltd.Inventors: Naoya Yabuuchi, Akihiro Kanakura, Takahito Kishida, Masayuki Maruta, Koichi Nagata, Makoto Shimizu
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Patent number: 5157086Abstract: The invention concerns a novel process for the preparation of poly(N-acylethyleneimine) grafted poysiloxanes comprising sulfoesterifying all or part of alcoholic hydroxyl groups of a hydroxy containing polysiloxane and conducting, in said sulfoesterification reaction mixture, ring-opening polymerization of a 2-oxazoline compound. The present process can afford the desired poly(N-acylethyleneimine) grafted polysiloxane in a higher reaction yield. The invention also provides novel poly(N-acylethyleneimine) grafted polysiloxanes.Type: GrantFiled: June 26, 1991Date of Patent: October 20, 1992Assignees: Nippon Paint Co., Ltd., Shinetsu Chemical Industries, Ltd.Inventors: Akihiro Kanakura, Yoshio Eguchi, Ryuzo Mizuguchi, Mitsuhiro Takarada, Yoshio Okamura, Hideyuki Itoh
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Patent number: 5124226Abstract: The present invention provides a process for producing toner which has very narrow particle size distribution and contains a uniformity dispersed pigment therein. The process comprises dispersion-polymerizing(I) a pigment paste comprising (A) a pigment grinding agent having basic groups, acidic groups or the both, (B) a pigment and (C) vinyl monomers,(II) a polymerization initiator and(III) a dispersion polymerization stabilizerin a dispersion medium which dissolves said vinyl monomers (C) and dispersion polymerization stabilizer (III) and which does not dissolve polymerized resin particles.Type: GrantFiled: October 16, 1990Date of Patent: June 23, 1992Assignee: Nippon Paint Co., Ltd.Inventors: Naoya Yabuuchi, Masayuki Maruta, Chikayuki Otsuka, Akihiro Kanakura, Akio Kashihara
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Patent number: 5066720Abstract: A resinous composition for coating use comprising(a) 3 to 70% by weight of organopolysiloxane represented by the formula:R.sup.1.sub.n R.sup.2.sub.m SiO.sub.(4-n-m)/2wherein R.sup.1 represents hydrogen, allyloxy group, an alkoxy group having 1 to 20 carbon atoms, an aryl group, methyl group, or an organic group having 2 to 100 carbon atoms; R.sup.2 is a hydroxyl group bearing organic group having 2 to 100 carbon atoms; m and n each represents a positive number fulfilling the requirements of 0<n<4, 0<m<4 and 2.ltoreq.m+n<4, having a number average molecular weight of 200 to 100,000 and a hydroxyl value of 20 to 400.(b) 97 to 30% by weight of hydroxyl group containing resin having a hydroxyl value of 20 to 300, and(c) crosslinking agent which is reactive with a hydroxyl groupThis composition is particularly useful in the area where durability and weather resistance of the formed coating are specifically required.Type: GrantFiled: February 21, 1989Date of Patent: November 19, 1991Assignees: Nippon Paint Co., Ltd., Shinetsu Chemical Industries, Ltd.Inventors: Hiroharu Ohsugi, Akihiro Kanakura, Hirotoshi Umemoto, Yoshio Okamura, Mitsuhiro Takarada, Kenji Yamamoto
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Patent number: 5011533Abstract: A metallic pigment composition which comprises a metallic pigment and a phosphorus compound selected from the group consisting of a phosphite represented by the following formula (I) ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which are the same or different, represent a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, a halogen-substituted alkyl group having 1 to 24 carbon atoms, an aryl group, a cycloalkyl group, an alkenyl group or an alkanol group, and n is an integer of 2 to 4, and a phosphobetain represented by the following formula (II) ##STR2## wherein R.sub.4, R.sub.5, and R.sub.6 and R.sub.7, which are the same or different, represent a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, a halogen-substituted alkyl group having 1 to 24 carbon atoms, an aryl group, a cycloalkyl group, an alkenyl group or an alkanol group, n is the same as mentioned above.Type: GrantFiled: June 26, 1989Date of Patent: April 30, 1991Assignee: Nippon Paint Co., Ltd.Inventors: Teruaki Kuwajima, Satoshi Nagahata, Akihiro Kanakura
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Patent number: 4916195Abstract: The invention concerns a novel process for the preparation of poly(N-acylethyleneimine) grafted polysiloxanes comprising sulfo-esterifying all or part of alcoholic hydroxyl groups of a hydroxy containing polysiloxane and conducting, in said sulfo-esterification reaction mixture, ring-opening polymerization of a 2-oxazoline compound. The present process can afford the desired poly(N-acylethyleneimine) grafted polysiloxane in a higher reaction yield.Type: GrantFiled: May 9, 1988Date of Patent: April 10, 1990Inventors: Akihiro Kanakura, Yoshio Eguchi, Ryuzo Mizuguchi, Mitsuhiro Takarada, Yoshio Okamura, Hideyuki Itoh
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Coating resinous composition containing saturated alicyclic acid modified amphoteric polyester resin
Patent number: 4578436Abstract: A novel resinous composition used for coating comprising an amphoteric polyester resin whose acidic groups are capable of developing a resinous acid value are controlled in kind and are modified with saturated alicyclic acids and etherified amino-formaldehyde resins. This resinous composition is characterized by having all of the advantages possessed by oil-free polyester resin compositions in respect to weather resistance, the mechanical properties of the coating, interlaminar adhesion and the like, and furthermore, are excellent, inter alia, weather resistance because of be modified with saturated alicyclic acids. Also the curing properties are improved because of the control of the acidic groups and because the resins are amphoteric, they are compatible with melamine resins and have excellent pigment dispersibility. The invention also provides a coating composition containing as a vehicle, the abovementioned resinous composition.Type: GrantFiled: May 2, 1984Date of Patent: March 25, 1986Assignee: Nippon Paint Co., Ltd.Inventors: Hirotoshi Umemoto, Hisaki Tanabe, Akihiro Kanakura, Shinji Nakano -
Patent number: 4563492Abstract: A resinous composition for coating use comprising an amphoteric resin having an acidic resinous component and a basic component of a basic compound, and an amino-formaldehyde resin etherified with monohydric alcohol having 1 to 4 carbon atoms and/or isocyanate compound, which is characterized by the fact that the basic component of a said amphoteric resin consists of a basic compound whose titration midpoint potential in non-aqueous potentiometric titration, when incorporated into the resin, is less than 450 mV, and the basicity of the amphoteric resin is within the range of 1.0.times.10.sup.-2 to 1.0 m mol/g solid. This composition can exhibit excellent pigment dispersibility and is useful as resinous vehicle for a coating composition to be used as a top coat for automobile bodies and the like.Type: GrantFiled: January 30, 1984Date of Patent: January 7, 1986Inventors: Hirotoshi Umemoto, Hisaki Tanabe, Akihiro Kanakura, Shinji Nakano