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    Method for producing polytetrafluoroethylene fine powder
    1.
    发明授权
    Method for producing polytetrafluoroethylene fine powder 有权
    生产聚四氟乙烯细粉的方法

    公开(公告)号：US08575287B2

    公开(公告)日：2013-11-05

    申请号：US12910904

    申请日：2010-10-25

    申请人： Shinya Higuchi ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    发明人： Shinya Higuchi ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    IPC分类号： C08F14/18

    CPC分类号： C08F214/26 ,  C08F2/24 ,  C08F6/18 ,  C08F6/22 ,  C08F14/26 ,  C08F114/26 ,  C08J3/16 ,  C08J2327/18 ,  C08L27/18

    摘要： To provide a method for producing a PTFE fine powder having a low paste extrusion pressure property by a simple method. The method for producing a PTFE fine power comprises emulsion polymerizing tetrafluoroethylene in the presence of an aqueous medium, a fluorinated surfactant and a radical polymerization initiator, to produce an aqueous PTFE emulsion, and coagulating it in the presence of at least one bulk density-reducing compound selected from the group consisting of ammonia, an ammonium salt and urea in an amount of from 0.4 to 10 parts by mass per 100 parts by mass of PTFE.

    摘要翻译： 提供一种通过简单的方法生产具有低糊料挤出压力特性的PTFE细粉的方法。 PTFE精细粉末的制造方法包括在水性介质，氟化表面活性剂和自由基聚合引发剂的存在下将四氟乙烯乳液聚合，生成PTFE水性乳液，并在至少一个体积密度降低 选自氨，铵盐和尿素的化合物的量相对于100质量份的PTFE为0.4〜10质量份。

    METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE FINE POWDER
    2.
    发明申请
    METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE FINE POWDER 有权
    生产聚四氟乙烯微粉的方法

    公开(公告)号：US20110040054A1

    公开(公告)日：2011-02-17

    申请号：US12910904

    申请日：2010-10-25

    申请人： Shinya HIGUCHI ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    发明人： Shinya HIGUCHI ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    IPC分类号： C08F14/26

    CPC分类号： C08F214/26 ,  C08F2/24 ,  C08F6/18 ,  C08F6/22 ,  C08F14/26 ,  C08F114/26 ,  C08J3/16 ,  C08J2327/18 ,  C08L27/18

    摘要： To provide a method for producing a PTFE fine powder having a low paste extrusion pressure property by a simple method.The method for producing a PTFE fine power comprises emulsion polymerizing tetrafluoroethylene in the presence of an aqueous medium, a fluorinated surfactant and a radical polymerization initiator, to produce an aqueous PTFE emulsion, and coagulating it in the presence of at least one bulk density-reducing compound selected from the group consisting of ammonia, an ammonium salt and urea in an amount of from 0.4 to 10 parts by mass per 100 parts by mass of PTFE.

    摘要翻译： 提供一种通过简单的方法生产具有低糊料挤出压力特性的PTFE细粉的方法。 PTFE精细粉末的制造方法包括在水性介质，氟化表面活性剂和自由基聚合引发剂的存在下将四氟乙烯乳液聚合，生成PTFE水性乳液，并在至少一个体积密度降低 选自氨，铵盐和尿素的化合物的量相对于100质量份的PTFE为0.4〜10质量份。

    Polytetrafluoroethylene aqueous emulsion and process for its production, polytetrafluoroethylene aqueous dispersion obtainable by using such an aqueous emulsion, polytetrafluoroethylene fine powder, and stretched porous material
    3.
    发明授权
    Polytetrafluoroethylene aqueous emulsion and process for its production, polytetrafluoroethylene aqueous dispersion obtainable by using such an aqueous emulsion, polytetrafluoroethylene fine powder, and stretched porous material 有权
    聚四氟乙烯水乳液及其制造方法，通过使用这种水性乳液，聚四氟乙烯细粉末和拉伸多孔材料得到的聚四氟乙烯水分散体

    公开(公告)号：US09376520B2

    公开(公告)日：2016-06-28

    申请号：US13447803

    申请日：2012-04-16

    申请人： Shinya Higuchi ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    发明人： Shinya Higuchi ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    IPC分类号： C08F214/26 ,  C08F14/26 ,  C08J3/03

    CPC分类号： C08F214/26 ,  C08F14/26 ,  C08J3/03 ,  C08J2327/18 ,  C08F2/24

    摘要： To produce a PTFE aqueous emulsion, whereby the environmental load is little, the stability of the aqueous emulsion is high, and a molded product having high heat resistance can be obtained. A process for producing a PTFE aqueous emulsion, which comprises emulsion-polymerizing tetrafluoroethylene (TFE) by means of at least one fluorinated emulsifier selected from the group consisting of a C4-8 fluorinated carboxylic acid having from 1 to 4 etheric oxygen atoms in its main chain, and its salts, to obtain an aqueous emulsion containing polytetrafluoroethylene (PTFE) microparticles having an average primary particle size of from 0.1 to 0.3 μm, wherein at the beginning of the emulsion polymerization of TFE, a (polyfluoroalkyl)ethylene (a) represented by “CH2═CH—Rf1”, and/or a comonomer (b) having a monomer reactivity ratio rTFE of from 0.1 to 8 in copolymerization with tetrafluoroethylene, is incorporated to the emulsion polymerization system, so as to be from 0.001 to 0.01 mass % relative to the final amount of polytetrafluoroethylene produced.

    摘要翻译： 为了制造PTFE水性乳液，由于环境负荷少，水性乳液的稳定性高，因此可以得到耐热性高的成型体。 一种PTFE水性乳液的制造方法，其特征在于，含有至少一种氟化乳化剂使四氟乙烯（TFE）进行乳液聚合，所述氟化乳化剂选自在其主体中具有1〜4个醚性氧原子的C4-8含氟羧酸 链和其盐，得到含有平均一次粒径为0.1〜0.3μm的聚四氟乙烯（PTFE）微粒的水性乳液，其中，在TFE的乳液聚合开始时，以（多氟烷基）乙烯（a）为代表的 通过“CH2 = CH-Rf1”和/或与四氟乙烯共聚的单体反应性比rTFE为0.1〜8的共聚单体（b）引入到乳液聚合体系中，为0.001〜0.01质量％ 相对于所生产的聚四氟乙烯的最终量。

    Method for producing polytetrafluoroethylene fine powder
    4.
    发明授权
    Method for producing polytetrafluoroethylene fine powder 有权
    生产聚四氟乙烯细粉的方法

    公开(公告)号：US07973127B2

    公开(公告)日：2011-07-05

    申请号：US12891867

    申请日：2010-09-28

    申请人： Shinya Higuchi ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    发明人： Shinya Higuchi ,  Yasuhiko Matsuoka ,  Shigeki Kobayashi

    IPC分类号： C08G63/02 ,  C08G63/00

    CPC分类号： C08F2/22 ,  C08F14/26 ,  C08F114/26 ,  C08F2/24

    摘要： The present invention provides a method for producing a polytetrafluoroethylene fine powder, which comprises emulsion polymerizing tetrafluoroethylene in the presence of an aqueous medium, a fluorinated surfactant and a radical polymerization initiator to produce an aqueous polytetrafluoroethylene emulsion, mixing and coagulating the aqueous emulsion to separate a polytetrafluoroethylene fine powder, and then drying the polytetrafluoroethylene fine powder in a wet state in an atmosphere containing ammonia.

    摘要翻译： 本发明提供一种聚四氟乙烯细粉的制造方法，其特征在于，在含水介质，氟化表面活性剂和自由基聚合引发剂的存在下，使四氟乙烯进行乳液聚合，制造聚四氟乙烯乳液，将水乳液混合并凝固， 聚四氟乙烯细粉末，然后在含氨气氛中将湿润状态的聚四氟乙烯细粉末干燥。

    Tetrafluoroethylene copolymer
    7.
    发明申请
    Tetrafluoroethylene copolymer 失效
    四氟乙烯共聚物

    公开(公告)号：US20050187363A1

    公开(公告)日：2005-08-25

    申请号：US11080636

    申请日：2005-03-16

    申请人： Kazuya Oharu ,  Hidekazu Okamoto ,  Shin Tatematsu ,  Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    发明人： Kazuya Oharu ,  Hidekazu Okamoto ,  Shin Tatematsu ,  Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    IPC分类号： C08F16/24 ,  C08F214/26

    CPC分类号： C08F214/26

    摘要： Provided is a tetrafluoroethylene copolymer consisting of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF2═CFORf1Rf2 (where Rf1 is a polyfluoroalkylene group which may contain an etheric oxygen atom and Rf2 is a polyfluorocycloalkyl group which may contain an etheric oxygen atom), wherein a content of the latter is from 0.005 to 0.5% by mass. The tetrafluoroethylene copolymer is excellent both in paste extrudability and in heat resistance, has characteristics such as excellent transparency of a molded product, and is suitably applicable to paste extrusion and compression molding.

    摘要翻译： 提供一种四氟乙烯共聚物，其由基于四氟乙烯的单元和基于由CF 2 - （CH 2）2表示的单体组成的单元组成 其中R f1是可以含有醚性氧原子的多氟亚烷基，R f2是可以含有醚性氧原子的多氟环烷基），其中后者的含量 为0.005〜0.5质量％。 四氟乙烯共聚物在糊状挤出性和耐热性方面优异，具有成型品的透明性优异的特性，适用于糊料挤出和压塑。

    Tetrafluoroethylene copolymer, its production method and paste extruded product
    8.
    发明授权
    Tetrafluoroethylene copolymer, its production method and paste extruded product 失效
    四氟乙烯共聚物，其生产方法和糊状挤出产品

    公开(公告)号：US07071273B2

    公开(公告)日：2006-07-04

    申请号：US10992718

    申请日：2004-11-22

    申请人： Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    发明人： Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    IPC分类号： C08F16/24 ,  C08F116/12 ,  C08F26/00

    CPC分类号： C08F214/262 ,  Y10S526/919 ,  Y10T428/2998

    摘要： Provided are a tetrafluoroethylene copolymer excellent in paste extrudability, which comprises a unit based on tetrafluoroethylene and a unit based on a monomer represented by a formula of CF2═CF—O—(CF2)nCF═CF2 (wherein n is an integer of from 1 to 6), wherein a content of the unit based on the monomer represented by the formula is from 0.1 to 0.5% by mass, wherein a particle size of a primary particle is from 0.1 to 0.5 μm, wherein a standard specific gravity is from 2.14 to 2.25, wherein a paste extrusion pressure is from 24.5 to 73.5 MPa and wherein the copolymer remains not undergoing melt molding; a fine powder of a tetrafluoroethylene copolymer; and a production method and a paste extruded product thereof. The TFE copolymer is excellent in paste extrudability and the molded product thereof is excellent in heat resistance and transparency.

    摘要翻译： 提供了一种糊状挤出性优异的四氟乙烯共聚物，其包含基于四氟乙烯的单元和基于由CF 2 -SF-O-（CF 2 O）2表示的单体的单元， /其中n为1至6的整数），其中基于由式（I）表示的单体的单元的含量 为0.1〜0.5质量％，其中一次粒子的粒径为0.1〜0.5μm，标准比重为2.14〜2.25，糊料挤出压力为24.5〜73.5MPa，共聚物 仍未经熔融成型; 四氟乙烯共聚物的细粉末; 及其制造方法及其糊状挤压制品。 TFE共聚物的糊状挤出性优异，其成型体的耐热性和透明性优异。

    Tetrafluoroethylene copolymer
    9.
    发明授权
    Tetrafluoroethylene copolymer 失效
    四氟乙烯共聚物

    公开(公告)号：US07009018B2

    公开(公告)日：2006-03-07

    申请号：US11080636

    申请日：2005-03-16

    申请人： Kazuya Oharu ,  Hidekazu Okamoto ,  Shin Tatematsu ,  Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    发明人： Kazuya Oharu ,  Hidekazu Okamoto ,  Shin Tatematsu ,  Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    IPC分类号： C08F116/12 ,  C08F16/24 ,  C08F216/12 ,  C08F114/18 ,  C08F14/18

    CPC分类号： C08F214/26

    摘要： Provided is a tetrafluoroethylene copolymer consisting of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF2═CFORf1Rf2 (where Rf1 is a polyfluoroalkylene group which may contain an etheric oxygen atom and Rf2 is a polyfluorocycloalkyl group which may contain an etheric oxygen atom), wherein a content of the latter is from 0.005 to 0.5% by mass. The tetrafluoroethylene copolymer is excellent both in paste extrudability and in heat resistance, has characteristics such as excellent transparency of a molded product, and is suitably applicable to paste extrusion and compression molding.

    摘要翻译： 提供一种四氟乙烯共聚物，其由基于四氟乙烯的单元和基于由CF 2 - （CH 2）2表示的单体组成的单元组成 其中R f1是可以含有醚性氧原子的多氟亚烷基，R f2是可以含有醚性氧原子的多氟环烷基），其中后者的含量 为0.005〜0.5质量％。 四氟乙烯共聚物在糊状挤出性和耐热性方面优异，具有成型品的透明性优异的特性，适用于糊料挤出和压塑。

    Tetrafluoroethylene copolymer, its production method and paste extruded product
    10.
    发明申请
    Tetrafluoroethylene copolymer, its production method and paste extruded product 失效
    四氟乙烯共聚物，其生产方法和糊状挤出产品

    公开(公告)号：US20050064195A1

    公开(公告)日：2005-03-24

    申请号：US10992718

    申请日：2004-11-22

    申请人： Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    发明人： Shigeki Kobayashi ,  Shinya Higuchi ,  Masataka Arai ,  Hiroki Nagai

    IPC分类号： C08F6/14 ,  C08F214/26 ,  C08F2/00

    CPC分类号： C08F214/262 ,  Y10S526/919 ,  Y10T428/2998

    摘要： Provided are a tetrafluoroethylene copolymer excellent in paste extrudability, which comprises a unit based on tetrafluoroethylene and a unit based on a monomer represented by a formula of CF2═CF—O—(CF2)nCF═CF2 (wherein n is an integer of from 1 to 6), wherein a content of the unit based on the monomer represented by the formula is from 0.1 to 0.5% by mass, wherein a particle size of a primary particle is from 0.1 to 0.5 μm, wherein a standard specific gravity is from 2.14 to 2.25, wherein a paste extrusion pressure is from 24.5 to 73.5 MPa and wherein the copolymer remains not undergoing melt molding; a fine powder of a tetrafluoroethylene copolymer; and a production method and a paste extruded product thereof. The TFE copolymer is excellent in paste extrudability and the molded product thereof is excellent in heat resistance and transparency.

    摘要翻译： 提供了一种糊状挤出性优异的四氟乙烯共聚物，其包含基于四氟乙烯的单元和基于由CF 2 = CF-O-（CF 2）n CF = CF 2（其中n为1的整数）表示的单体的单元 至6），其中基于由式表示的单体的单元的含量为0.1至0.5质量％，其中初级颗粒的颗粒尺寸为0.1至0.5微米，其中标准比重为2.14 至2.25，其中糊料挤出压力为24.5至73.5MPa，并且其中所述共聚物保持不经历熔融模塑; 四氟乙烯共聚物的细粉末; 及其制造方法及其糊状挤压制品。 TFE共聚物的糊状挤出性优异，其成型体的耐热性和透明性优异。