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1.发明公开公开(公告)号：US20240243293A1
公开(公告)日：2024-07-18
申请号：US18617779
申请日：2024-03-27
发明人： Taketo KATO , Takaya Yamada , Kohei Yasuda , Taku Yamanaka , Junpei Terada , Masayoshi Miyamoto , Kenta Murayama , Ryota Usami , Hirotoshi Yoshida
IPC分类号： H01M4/62
CPC分类号： H01M4/623
摘要： The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder which is a sustainable product and can reduce or prevent gas generation inside a battery cell and deterioration of battery characteristics, an electrode binder, an electrode mixture, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene powder being substantially free from water and a fluorine-containing compound having a molecular weight of 1000 or less.
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公开(公告)号：US20220282008A1
公开(公告)日：2022-09-08
申请号：US17747685
申请日：2022-05-18
发明人： Yoshinori NANBA , Taketo KATO , Kenji ICHIKAWA , Soushi TSUCHIYA , Souta YUASA , Yosuke KISHIKAWA , Masahiro HIGASHI , Masaki IRIE , Taku YAMANAKA
摘要： The present disclosure provides a method for producing a fluoropolymer, the method includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the polymer (1) is a polymer of a monomer (1) represented by the general formula (1) below, in which the content of a dimer and a trimer of the monomer (1) is 1.0% by mass or less based on the polymer (1): CF2═CF—R—CZ1Z1-A0 (1) wherein R is a linking group; Z1 and Z2 are each independently F or CF3; and A0 is an anionic group.
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公开(公告)号：US20220119556A1
公开(公告)日：2022-04-21
申请号：US17428677
申请日：2020-02-07
发明人： Takahiro TAIRA , Chiaki OKUI , Hirotoshi YOSHIDA , Yuuji TANAKA , Taku YAMANAKA , Taketo KATO
摘要： A composition having a breaking strength of 10.0 N or more, containing a polytetrafluoroethylene, and substantially free from a compound represented by the following general formula (3): (H—(CF2)8—SO3)qM2 General Formula (3): wherein M2 is H, a metal atom, NR54, where each R5 may be the same or different and is H or an organic group having 1 to 10 carbon atoms, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent; and q is 1 or 2.
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4.发明申请公开(公告)号：US20190023856A1
公开(公告)日：2019-01-24
申请号：US16069735
申请日：2017-08-04
发明人： Ken YOSHIDA , Hirotoshi YOSHIDA , Keisuke HAGI , Masayuki TSUJI , Taketo KATO , Yuuji TANAKA , Taku YAMANAKA , Kazuya KAWAHARA , Masamichi SUKEGAWA , Kazutaka HOSOKAWA
摘要： The invention provides a production method for producing low molecular weight polytetrafluoroethylene enabling easy removal of most of C8-C14 perfluorocarboxylic acids and salts thereof, which are unfortunately generated by irradiation, from the low molecular weight polytetrafluoroethylene. The method for producing low molecular weight polytetrafluoroethylene includes: (1) irradiating polytetrafluoroethylene to provide low molecular weight polytetrafluoroethylene having a melt viscosity of 1×102 to 7×105 Pa·s at 380° C.; (2) pulverizing the low molecular weight polytetrafluoroethylene; and (3) heating the low molecular weight polytetrafluoroethylene pulverized in the step (2).
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5.发明申请公开(公告)号：US20190023818A1
公开(公告)日：2019-01-24
申请号：US16069052
申请日：2017-08-04
发明人： Ken YOSHIDA , Hirotoshi YOSHIDA , Keisuke HAGI , Masayuki TSUJI , Taketo KATO , Yuuji TANAKA , Taku YAMANAKA , Kazuya KAWAHARA , Masamichi SUKEGAWA , Kazutaka HOSOKAWA
摘要： The invention provides a method for producing low molecular weight polytetrafluoroethylene less likely to generate C8-C14 perfluorocarboxylic acids and salts thereof. The method for producing low molecular weight polytetrafluoroethylene includes: (1) feeding into an airtight container: polytetrafluoroethylene; at least one additive selected from the group consisting of hydrocarbons, chlorinated hydrocarbons, alcohols, and carboxylic acids other than C8-C14 perfluorocarboxylic acids; and at least one selected from the group consisting of inert gases other than the above additive and oxygen adsorbents; and (2) irradiating the polytetrafluoroethylene to provide low molecular weight polytetrafluoroethylene having a complex viscosity of 1×102 to 7×105 Pa·s at 380° C.
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6.发明申请MODIFIED POLYTETRAFLUOROETHYLENE FINE POWDER AND UNIAXIALLY STRETCHED POROUS BODY 审中-公开改性聚四氟乙烯精细粉末和独特拉伸多孔体公开(公告)号：US20160289361A1
公开(公告)日：2016-10-06
申请号：US15038307
申请日：2014-12-01
发明人： Taku YAMANAKA , Makoto ONO , Kohei YASUDA , Masahiko YAMADA , Shinichi CHAEN , Yasuhiko SAWADA , Takahiro TAIRA , Hirotoshi YOSHIDA , Taketo KATO
IPC分类号： C08F214/26 , C08J5/18
CPC分类号： C08F214/262 , B29C55/04 , C08F2500/11 , C08F2500/24 , C08F2500/26 , C08F2800/10 , C08J5/18 , C08J2327/18
摘要： The present invention aims to provide a modified polytetrafluoroethylene fine powder capable of providing a stretched body having high strength, a small pore size, and excellent homogeneity. The modified polytetrafluoroethylene fine powder of the present invention has non-melt-processability, has a standard specific gravity of 2.155 or lower, includes 0.015 mol % or more of a polymer unit derived from perfluoro(methyl vinyl ether) in all the monomer units, is obtained by emulsion polymerizing tetrafluoroethylene and at least the perfluoro(methyl vinyl ether) in the presence of a fluorosurfactant having a LogPOW value of 3.4 or lower, and has an extrusion pressure of 20.0 MPa or lower.
摘要翻译： 本发明的目的在于提供能够提供强度高，孔径小，均匀性优异的拉伸体的改性聚四氟乙烯细粉。 本发明的改性聚四氟乙烯微粉具有非熔融加工性，标准比重为2.155以下，在全部（单
体单元）中含有来自全氟（甲基乙烯基醚）的聚合物单元的0.015摩尔％以上， 通过在LogPOW值为3.4以下的含氟表面活性剂的存在下，将四氟乙烯和至少全氟（甲基乙烯基醚）进行乳液聚合而得到，挤出压力为20.0MPa以下。-
公开(公告)号：US20140336315A1
公开(公告)日：2014-11-13
申请号：US14338802
申请日：2014-07-23
发明人： Taku YAMANAKA , Masayoshi MIYAMOTO , Shunji KASAI , Masayuki TSUJI , Kazuya KAWAHARA , Mayumi YAMAUCHI , Taketo KATO , Yasuhiko SAWADA
CPC分类号： C08L69/00 , C08F214/26 , C08J3/16 , C08J3/203 , C08J2327/18 , C08J2369/00 , C08J2427/18 , C08L27/18 , C08L27/22 , C08L67/02 , Y10T428/2982 , C08F214/28 , C08F2/26
摘要： Provided is a dripping inhibitor excellent in handling characteristics. The present invention provides a dripping inhibitor including a modified polytetrafluoroethylene, the inhibitor having an average particle size of 300 to 800 μm, an apparent density of 0.40 to 0.52 g/ml, a compression ratio of 1.20 or less, an aggregate disintegration degree with 50-sec vibration of 70% or more, a cylinder extrusion pressure at a reduction ratio 1500 of 80 MPa or less, and a standard specific gravity (SSG) of 2.140 to 2.230.
摘要翻译： 具有处理性优异的滴液抑制剂。 本发明提供一种包含改性聚四氟乙烯的防滴落剂，该平均粒度为300〜800μm，表观密度为0.40〜0.52g / ml，压缩比为1.20以下，聚集体崩解度为50 -sec振动为70％以上，压下率1500为80MPa以下的圆筒挤出压力为2.140〜2.230的标准比重（SSG）。
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公开(公告)号：US20240026141A1
公开(公告)日：2024-01-25
申请号：US18477894
申请日：2023-09-29
发明人： Hirofumi MUKAE , Yosuke KISHIKAWA , Taku YAMANAKA , Taketo KATO , Ryuo ITOH , Hiroki KUBOTA
IPC分类号： C08L27/18 , C08F214/26
CPC分类号： C08L27/18 , C08F214/26 , C08L2205/025
摘要： A fluororesin composition, and a molded article obtained from the fluororesin composition. The fluororesin composition containing: a non-melt-flowable fluororesin A having a history of being heated to a melting point thereof or higher; and a non-melt-flowable fluororesin B having no history of being heated to a melting point thereof or higher. The fluororesin composition contains a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with tetrafluoroethylene. Further, the fluororesin composition is a powder for compression molding excluding ram extrusion molding.
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公开(公告)号：US20230416421A1
公开(公告)日：2023-12-28
申请号：US18464931
申请日：2023-09-11
发明人： Takuya YOSHIOKA , Emi YAMAMOTO , Yohei FUJIMOTO , Taketo KATO , Taku YAMANAKA , Hirotoshi YOSHIDA
摘要： A method for producing a fluoropolymer aqueous dispersion, the method including concentrating a composition comprising a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I), a fluoropolymer excluding the polymer (I), a nonionic surfactant, a fluorine-free anionic surfactant, and an aqueous medium to thereby obtain an aqueous dispersion containing the fluoropolymer,
CX1X3═CX2R(—CZ1Z2-A0)m (I)
wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.-
公开(公告)号：US20230203297A1
公开(公告)日：2023-06-29
申请号：US18178918
申请日：2023-03-06
发明人： Takuya YAMABE , Emi YAMAMOTO , Yoshihiro SODA , Taku YAMANAKA , Ryota USAMI , Taketo KATO , Tomohiro SHIROMARU , Yasukazu NAKATANI
CPC分类号： C08L27/24 , C08F2/30 , C08L27/18 , C08L2201/54
摘要： A modified polytetrafluoroethylene aqueous dispersion having low viscosity at high temperature. The modified polytetrafluoroethylene aqueous dispersion contains a modified polytetrafluoroethylene and a nonionic surfactant, has a modified polytetrafluoroethylene solid concentration of 50 to 70% by mass, is substantially free from a fluorine-containing surfactant, and has a viscosity at 55° C. of 80 mPa•s or lower, and the modified polytetrafluoroethylene contains 0.050% by mass or more and 1.00% by mass or less of a polymerized unit based on a modifying monomer.
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