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公开(公告)号：US20180230012A1
公开(公告)日：2018-08-16
申请号：US15955211
申请日：2018-04-17
Inventor： Fumihiro KUROKAWA , Seitaro KOBAYASHI , Takashi KAWASAKI , Go TAKEDA , Yoshio BANDO , Dmitri GOLBERG
IPC: C01B21/064
CPC classification number: C01B21/0646 , C01P2004/03 , C01P2004/04 , C01P2004/32 , C01P2004/62 , C01P2004/64 , C01P2006/80
Abstract: A method of producing a spherical boron nitride fine particle includes reacting ammonia with an alkoxide borate at an ammonia/alkoxide borate molar ratio of 1 to 10 in an inert gas stream at 750° C. or higher within 30 seconds, then applying heat treatment to a reaction product in an atmosphere of ammonia gas or a mixed gas of ammonia gas and an inert gas at 1,000 to 1,600° C. for at least 1 hour, and further firing the reaction product in an inert gas atmosphere at 1,800 to 2,200° C. for at least 0.5 hour.
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公开(公告)号：US20230087679A1
公开(公告)日：2023-03-23
申请号：US17795035
申请日：2021-01-20
Applicant: Denka Company Limited
Inventor： Tatsuya NAKANO , Tatsunori HORIGUCHI , Takashi KAWASAKI , Toshiaki MIYAUCHI
IPC: C08F220/18
Abstract: One aspect of the present invention is an acrylic rubber containing ethyl acrylate and n-butyl acrylate as monomer units and containing a toluene-insoluble component, wherein a mass ratio of a content of the ethyl acrylate to a content of the n-butyl acrylate is 2 or more, and a content of the toluene-insoluble component is 5% by mass or less based on a total amount of the acrylic rubber.
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公开(公告)号：US20190300633A1
公开(公告)日：2019-10-03
申请号：US16307845
申请日：2017-06-27
Inventor： Tatsuya NAKANO , Takashi KAWASAKI , Toshiaki MIYAUCHI , Tatsunori HORIGUCHI , Tuhin SAHA , Anil K. BHOWMICK
IPC: C08F220/12 , C08K3/34 , C09K3/10 , F16L11/04 , G10K11/162
Abstract: Provided are an acrylic rubber composition having higher tensile properties and higher heat resistance and a vulcanizate thereof. An acrylic rubber composition includes 1 to 25 parts by mass of a layered clay mineral relative to 100 parts by mass of an acrylic rubber. The acrylic rubber is a copolymer of a (meth)acrylic acid alkyl ester and a curesite monomer.
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公开(公告)号：US20160368769A1
公开(公告)日：2016-12-22
申请号：US15117853
申请日：2015-02-09
Inventor： Fumihiro KUROKAWA , Seitaro KOBAYASHI , Takashi KAWASAKI , Go TAKEDA , Yoshio BANDO , Dmitri GOLBERG
IPC: C01B21/064
CPC classification number: C01B21/0646 , C01P2004/03 , C01P2004/04 , C01P2004/32 , C01P2004/62 , C01P2004/64 , C01P2006/80
Abstract: A spherical boron nitride fine particle suited for use as a highly thermoconductive filler or the like has an average particle diameter of 0.01 to 1.0 μm, an orientation index of 1 to 15, a boron nitride purity of 98.0% by mass or greater, and an average circularity of 0.80 or greater. A method of producing a spherical boron nitride fine particle includes reacting ammonia with an alkoxide borate at an ammonia/alkoxide borate molar ratio of 1 to 10 in an inert gas stream at 750° C. or higher within 30 seconds, then applying heat treatment to a reaction product in an atmosphere of ammonia gas or a mixed gas of ammonia gas and an inert gas at 1,000 to 1,600° C. for at least 1 hour, and further firing the reaction product in an inert gas atmosphere at 1,800 to 2,200° C. for at least 0.5 hour.
Abstract translation: 适用作高导热性填料等的球形氮化硼微粒的平均粒径为0.01〜1.0μm，取向指数为1〜15，氮化硼纯度为98.0质量％以上， 平均圆形度为0.80以上。 制造球形氮化硼微粒的方法包括在惰性气体流中在氨水/醇盐硼酸盐摩尔比为1至10的氨/硼酸盐醇溶液中在750℃或更高的温度下在30秒内使氨与反应物进行热处理， 将反应产物在氨气气氛中或氨气和惰性气体的混合气体在1,000至1600℃下反应至少1小时，并在惰性气体气氛中在1800至2200℃下进一步焙烧该反应产物 至少0.5小时。
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Patent Agency Ranking
公开(公告)号：US20200332039A1
公开(公告)日：2020-10-22
申请号：US16754093
申请日：2018-10-15
Applicant: DENKA COMPANY LIMITED
Inventor： Tatsuya NAKANO , Toshiaki MIYAUCHI , Takashi KAWASAKI
IPC: C08F220/14 , C08K3/04 , C08L33/08
Abstract: A method for producing an acrylic rubber, the method including dividedly adding 80% to 100% by mass of the total mass of a monomer component containing 100 parts by mass of an acrylic acid alkyl ester having an alkyl group having 1 to 3 carbon atoms, 20 to 160 parts by mass of an acrylic acid alkyl ester having an alkyl group having 4 to 8 carbon atoms, and 0.1 to 10 parts by mass of a crosslinking seat monomer containing a carboxyl group, and performing emulsion polymerization at a polymerization temperature of 20° C. to 60° C. The monomer component may further contain a methacrylic acid alkyl ester having an alkyl group having 1 to 4 carbon atoms, and ethylene.
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公开(公告)号：US20190256701A1
公开(公告)日：2019-08-22
申请号：US16307863
申请日：2017-06-27
Inventor： Tatsuya NAKANO , Takashi KAWASAKI , Toshiaki MIYAUCHI , Tatsunori HORIGUCHI , Tuhin SAHA , Anil K BHOWMICK
Abstract: Provided are an acrylic rubber composition having higher tensile properties and higher heat resistance and a vulcanizate thereof. The present invention provides an acrylic rubber composition includes 0.1 to 50 parts by mass of a carbon material includes graphene oxide, relative to 100 parts by mass of an acrylic rubber.
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公开(公告)号：US20170008767A1
公开(公告)日：2017-01-12
申请号：US15117878
申请日：2015-02-09
Inventor： Fumihiro KUROKAWA , Seitaro KOBAYASHI , Takashi KAWASAKI , Go TAKEDA , Yoshio BANDO , Dmitri GOLBERG
IPC: C01B21/064
CPC classification number: C01B21/0646 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2006/80
Abstract: A boron nitride fine particle has low major diameter/thickness (aspect) ratio, high purity and high crystallinity, and also has an average particle diameter of 0.05 to 2.0 μm, a graphitization index of 3 or less, and a total oxygen content of 0.20% by mass or less, with an average value of a major diameter/thickness ratio of scaly particles being 6.0 or less. A method of producing a boron nitride fine particle includes introducing ammonia and an alkoxide borate at an ammonia/alkoxide borate molar ratio of 1 to 5 in a reaction vessel in an inert gas atmosphere for heating at 800 to 1,350° C. within 30 seconds thereby obtaining a boron nitride precursor, and then heating the boron nitride precursor at 1,650 to 2,200° C. for at least 0.5 hour in an inert gas atmosphere.
Abstract translation: 氮化硼微粒具有低的长径/厚度（纵横）比，高纯度和高结晶度，并且平均粒径为0.05-2.0μm，石墨化指数为3或更小，总氧含量为0.20 质量％以下，鳞片状颗粒的长径/厚度比的平均值为6.0以下。 氮化硼微粒的制造方法包括在惰性气体气氛下，在反应容器内以氨/硼酸盐摩尔比为1〜5的氨和醇盐硼酸盐引入，在30分钟内在800〜1350℃下加热， 获得氮化硼前体，然后在惰性气体气氛中将氮化硼前体在1650-2200℃加热至少0.5小时。
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8.发明申请公开(公告)号：US20190288280A1
公开(公告)日：2019-09-19
申请号：US16429716
申请日：2019-06-03
Applicant: DENKA COMPANY LIMITED
Inventor： Takashi KAWASAKI , Nobuyuki YOSHINO , Hiroshi MURATA , Takehiko SAWAI , Shinji SAITO , Kazunori URAO
Abstract: Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: particles of lithium-containing phosphate; and carbon coating comprising at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material, wherein each particle is coated with the carbon coating. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm. The lithium-containing phosphate is preferably LiFePO4, LiMnPO4, LiMnxFe(1-x)PO4, LiCoPO4, or Li3V2(PO4)3.
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9.发明申请公开(公告)号：US20160372740A1
公开(公告)日：2016-12-22
申请号：US15121110
申请日：2015-02-24
Applicant: TODA KOGYO CORP. , DENKA COMPANY LIMITED
Inventor： Akihisa KAJIYAMA , Teruaki SANTOKI , Daisuke MORITA , Ryuta MASAKI , Takahiko SUGIHARA , Tsuyoshi WAKIYAMA , Kazutoshi MATSUMOTO , Akira YODA , Taroh INADA , Hiroshi YOKOTA , Takashi KAWASAKI
IPC: H01M4/36 , H01M4/525 , H01M10/0525 , H01M4/505 , H01M4/62
CPC classification number: H01M4/364 , H01M4/131 , H01M4/136 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/625 , H01M10/052 , H01M10/0525 , H01M2004/028
Abstract: An object of the present invention is to provide a positive electrode mixture capable of conducting stable charging and discharging with a less amount of gasses generated which has an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium. The present invention relates to a positive electrode mixture comprising carbon black having a bulk density of not more than 0.1 g/cm3, a crystallite size of 10 to 40 Å, an iodine adsorption of 1 to 150 mg/g, a volatile content of not more than 0.1% and a metal impurity content of not more than 20 ppm, and a positive electrode active substance having an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium.
Abstract translation: 本发明的目的是提供一种正极混合物，其能够以较少量的气体进行稳定的充放电，其具有基于锂的工作电压或不小于4.5V的初始晶体相变电压 。 本发明涉及包含炭黑的正极混合物，其堆积密度不大于0.1g / cm 3，微晶尺寸为10至40，碘吸附为1至150mg / g，挥发物含量不为 大于0.1％，金属杂质含量为20ppm以下，以锂为基准的工作电压或初期晶体相变电压为4.5V以上的正极活性物质。
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