公开(公告)号：US09072993B2

公开(公告)日：2015-07-07

申请号：US13703860

申请日：2011-06-08

申请人： Kunihiko Inui ,  Yoshiyuki Shibuya ,  Shunji Kasai ,  Taku Yamanaka

发明人： Kunihiko Inui ,  Yoshiyuki Shibuya ,  Shunji Kasai ,  Taku Yamanaka

IPC分类号： B01D39/16 ,  B01D46/54 ,  B01D46/52

CPC分类号： B01D39/1692 ,  B01D46/521 ,  B01D46/54 ,  B01D46/543 ,  B01D2239/0654 ,  B01D2239/1208 ,  B01D2239/1216 ,  B01D2239/1291 ,  B01D2275/10

摘要： A filter medium includes a porous film and a support material supporting the porous film. The porous film includes polytetrafluoroethylene, has an average pore diameter of at least 2.5 μm, and has a porosity of at least 95%. A pressure loss is less than 100 Pa when air is passed through the filter medium at a velocity of 5.3 cm/sec. A collection efficiency of NaCl particles is at least 95% when air including NaCl particles with a particle diameter of 0.3 μm is passed through the filter medium at a velocity of 5.3 cm/sec. A PF value is at least 30, where PF={−log [(100−collection efficiency (%))/100]/pressure loss (Pa)}×1000. A dust holding capacity of polyalphaolefin particles held in the filter medium is at least 15 g/m2 when air including polyalphaolefin particles with a count median diameter of 0.25 μm is continuously passed through the filter medium at a velocity of 5.3 cm/sec and pressure loss reaches 300 Pa.

摘要翻译： 过滤介质包括多孔膜和支撑多孔膜的支撑材料。 多孔膜包括聚四氟乙烯，平均孔径至少为2.5μm，孔隙率至少为95％。 当空气以5.3cm / sec的速度通过过滤介质时，压力损失小于100Pa。 当含有粒径为0.3μm的NaCl颗粒的空气以5.3cm / sec的速度通过过滤介质时，NaCl颗粒的收集效率至少为95％。 PF值至少为30，其中PF = { - log [（100收集效率（％））/ 100] /压力损失（Pa）}×1000。 当包含计数中值粒径为0.25μm的聚α-烯烃颗粒的空气以5.3cm / sec的速度和压力损失连续通过过滤介质时，保持在过滤介质中的聚α-烯烃颗粒的防尘能力至少为15g / m 2 达到300 Pa

公开(公告)号：US20130097982A1

公开(公告)日：2013-04-25

申请号：US13703860

申请日：2011-06-08

申请人： Kunihiko Inui ,  Yoshiyuki Shibuya ,  Shunji Kasai ,  Taku Yamanaka

发明人： Kunihiko Inui ,  Yoshiyuki Shibuya ,  Shunji Kasai ,  Taku Yamanaka

IPC分类号： B01D46/00

CPC分类号： B01D39/1692 ,  B01D46/521 ,  B01D46/54 ,  B01D46/543 ,  B01D2239/0654 ,  B01D2239/1208 ,  B01D2239/1216 ,  B01D2239/1291 ,  B01D2275/10

摘要： A filter medium includes a porous film and a support material supporting the porous film. The porous film includes polytetrafluoroethylene, has an average pore diameter of at least 2.5 μm, and has a porosity of at least 95%. A pressure loss is less than 100 Pa when air is passed through the filter medium at a velocity of 5.3 cm/sec. A collection efficiency of NaCl particles is at least 95% when air including NaCl particles with a particle diameter of 0.3 μm is passed through the filter medium at a velocity of 5.3 cm/sec. A PF value is at least 30, where PF={−log [(100−collection efficiency (%))/100]/pressure loss (Pa)}×1000. A dust holding capacity of polyalphaolefin particles held in the filter medium is at least 15 g/m2 when air including polyalphaolefin particles with a count median diameter of 0.25 μm is continuously passed through the filter medium at a velocity of 5.3 cm/sec and pressure loss reaches 300 Pa.

摘要翻译： 过滤介质包括多孔膜和支撑多孔膜的支撑材料。 多孔膜包括聚四氟乙烯，平均孔径至少为2.5μm，孔隙率为95％以上。 当空气以5.3cm / sec的速度通过过滤介质时，压力损失小于100Pa。 当包含粒径为0.3μm的NaCl颗粒的空气以5.3cm / sec的速度通过过滤介质时，NaCl颗粒的收集效率至少为95％。 PF值至少为30，其中PF = { - log [（100收集效率（％））/ 100] /压力损失（Pa）}×1000。 当包含计数中值粒径为0.25μm的聚α-烯烃颗粒的空气以5.3cm / sec的速度连续通过过滤介质并且压力损失时，保持在过滤介质中的聚α-烯烃颗粒的防尘能力为至少15g / m 2 达到300 Pa

公开(公告)号：US09309335B2

公开(公告)日：2016-04-12

申请号：US13810323

申请日：2011-09-29

申请人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada

发明人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada

IPC分类号： C08F14/26 ,  C08F2/20 ,  C08F114/26 ,  C08J3/16 ,  C08F214/26

CPC分类号： C08F14/26 ,  C08F2/20 ,  C08F114/26 ,  C08F214/26 ,  C08J3/16 ,  C08J2327/18 ,  Y10T428/2982 ,  C08F114/24

摘要： A process for producing a polytetrafluoroethylene fine powder including: (1) a step of preparing an aqueous dispersion containing polytetrafluoroethylene, water and a surfactant (A); (2) a step of initiating coagulation of the polytetrafluoroethylene in said aqueous dispersion by agitating said aqueous dispersion; (3) a step of adding a surfactant (B) after the step (2); (4) a step of terminating coagulation after the step (3); (5) a step of collecting a wet powder of the polytetrafluoroethylene; and (6) a step of drying the wet powder of the polytetrafluoroethylene.

摘要翻译： 一种生产聚四氟乙烯细粉的方法，包括：（1）制备含有聚四氟乙烯，水和表面活性剂（A）的水分散体的步骤; （2）通过搅拌所述水性分散体来引发聚四氟乙烯在所述水分散体中的凝结的步骤; （3）在步骤（2）之后加入表面活性剂（B）的步骤; （4）在步骤（3）之后终止凝结的步骤; （5）收集聚四氟乙烯的湿粉末的步骤; 和（6）干燥聚四氟乙烯的湿粉末的步骤。

公开(公告)号：US20130184401A1

公开(公告)日：2013-07-18

申请号：US13876361

申请日：2011-09-29

申请人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada ,  Masayuki Tsuji

发明人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada ,  Masayuki Tsuji

IPC分类号： C08J3/16

CPC分类号： C08J3/16 ,  C08J2327/18

摘要： A method for manufacturing a polytetrafluoroethylene fine powder characterized by including the steps of (1) preparing an aqueous dispersion containing polytetrafluoroethylene, water, and a surfactant (A); (2) coagulating the polytetrafluoroethylene in the aqueous dispersion by agitating the aqueous dispersion with a discharge flow-type impeller; (3) collecting a wet powder of the polytetrafluoroethylene; and (4) drying the wet powder of the polytetrafluoroethylene.

摘要翻译： 其特征在于包括以下步骤：（1）制备含有聚四氟乙烯，水和表面活性剂（A）的水性分散体的步骤; （2）通过用排出流式叶轮搅拌水分散体而使水分散体中的聚四氟乙烯凝结; （3）收集聚四氟乙烯的湿粉末; 和（4）干燥聚四氟乙烯的湿粉末。

公开(公告)号：US08466236B2

公开(公告)日：2013-06-18

申请号：US12527510

申请日：2008-02-18

申请人： Hiroyuki Yoshimoto ,  Hirokazu Yukawa ,  Yasuhiko Sawada ,  Taku Yamanaka ,  Masamichi Sukegawa

发明人： Hiroyuki Yoshimoto ,  Hirokazu Yukawa ,  Yasuhiko Sawada ,  Taku Yamanaka ,  Masamichi Sukegawa

IPC分类号： C08L27/16 ,  C08L27/18 ,  C08L27/00

CPC分类号： B29B13/007 ,  B29K2027/12 ,  B29K2027/18 ,  C08L27/16 ,  C08L27/18 ,  C08L2205/02 ,  C08L2666/04

摘要： The invention provides a fluororesin composition capable of providing a molded article having low relative dielectric constant, excellent in a temperature stability and causing only small transmission losses. The invention is a fluororesin composition wherein a rate of change in relative dielectric constant between 25° C. and 80° C. of a molded article produced therefrom under a standard condition is not greater than 0.2%.

摘要翻译： 本发明提供一种氟树脂组合物，其能够提供具有低相对介电常数的模制品，其温度稳定性优异并且仅导致较小的传输损失。 本发明是一种氟树脂组合物，其中在标准条件下由其制备的模塑制品在25℃和80℃之间的相对介电常数的变化率不大于0.2％。

公开(公告)号：US20080227880A1

公开(公告)日：2008-09-18

申请号：US12047370

申请日：2008-03-13

申请人： Hiroyuki YOSHIMOTO ,  Hirokazu Yukawa ,  Yasuhiko Sawada ,  Taku Yamanaka ,  Masamichi Sukegawa

发明人： Hiroyuki YOSHIMOTO ,  Hirokazu Yukawa ,  Yasuhiko Sawada ,  Taku Yamanaka ,  Masamichi Sukegawa

IPC分类号： C08J9/00

CPC分类号： B01D71/36 ,  B01D67/002 ,  B01D67/0025 ,  B01D69/02 ,  B01D71/26 ,  B01D71/32 ,  B01D71/34 ,  B01D2325/24 ,  C08J9/0061 ,  C08J2327/18

摘要： The present invention provides a molded porous body with very small air bubbles distributed therein as well as a filter using the porous body. The present invention is related to a porous body comprising a polytetrafluoroethylene-based resin and a thermoplastic resin other than the polytetrafluoroethylene-based resin, and having a specific gravity exceeding 1.80 but less than 2.18 and a percent conversion to crystals of not higher than 50%.

摘要翻译： 本发明提供一种其中分布有非常小的气泡的成型多孔体以及使用该多孔体的过滤器。 本发明涉及一种多孔体，其包含聚四氟乙烯类树脂和聚四氟乙烯类树脂以外的热塑性树脂，其比重超过1.80但小于2.18，转化率不高于50％ 。

公开(公告)号：US20130122302A1

公开(公告)日：2013-05-16

申请号：US13810323

申请日：2011-09-29

申请人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada

发明人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada

IPC分类号： C08F14/26

CPC分类号： C08F14/26 ,  C08F2/20 ,  C08F114/26 ,  C08F214/26 ,  C08J3/16 ,  C08J2327/18 ,  Y10T428/2982 ,  C08F114/24

摘要： A process for producing a polytetrafluoroethylene fine powder including: (1) a step of preparing an aqueous dispersion containing polytetrafluoroethylene, water and a surfactant (A); (2) a step of initiating coagulation of the polytetrafluoroethylene in said aqueous dispersion by agitating said aqueous dispersion; (3) a step of adding a surfactant (B) after the step (2); (4) a step of terminating coagulation after the step (3); (5) a step of collecting a wet powder of the polytetrafluoroethylene; and (6) a step of drying the wet powder of the polytetrafluoroethylene.

摘要翻译： 一种生产聚四氟乙烯细粉的方法，包括：（1）制备含有聚四氟乙烯，水和表面活性剂（A）的水分散体的步骤; （2）通过搅拌所述水性分散体来引发聚四氟乙烯在所述水分散体中的凝结的步骤; （3）在步骤（2）之后加入表面活性剂（B）的步骤; （4）在步骤（3）之后终止凝结的步骤; （5）收集聚四氟乙烯的湿粉末的步骤; 和（6）干燥聚四氟乙烯的湿粉末的步骤。

公开(公告)号：US20100204345A1

公开(公告)日：2010-08-12

申请号：US12670995

申请日：2008-08-07

申请人： Taku Yamanaka ,  Nobuhiko Tsuda ,  Masayuki Tsuji ,  Yasuhiko Sawada

发明人： Taku Yamanaka ,  Nobuhiko Tsuda ,  Masayuki Tsuji ,  Yasuhiko Sawada

IPC分类号： A61K47/32 ,  C08L27/18 ,  C08F214/26 ,  G03G9/08 ,  A61Q90/00

CPC分类号： C08F14/26 ,  C08F2/18 ,  C08F6/16 ,  C08F6/20 ,  C08F6/22 ,  C08F214/26 ,  G03G9/0872 ,  G03G9/09766 ,  C08L27/18 ,  C08F2/20 ,  C08F2/24

摘要： The present invention provides an aqueous dispersion of a low-molecular-weight polytetrafluoroethylene (PTFE), which contains an easily removable surfactant, and has a good dispersion stability. Specifically, the present invention provides an aqueous dispersion of a low-molecular-weight PTFE comprising tetrafluoroethylene (TFE) units, or TFE units and modifying monomer units which are copolymerizable with the TFE units, wherein the aqueous dispersion contains from 70 to 9,000 ppm, based on the aqueous dispersion, of a fluorine-containing compound of the formula (1) below: X—(CF2)m—Y  (1) where X is H or F; m is an integer from 3 to 5; and Y is —SO3M, —SO4M, —SO3R, —SO4R, —COOM, —PO3M2 or —PO4M2, M being H, NH4 or an alkali metal, and R being an alkyl group having 1 to 12 carbons, and the low-molecular-weight PTFE has an average primary particle size of from 100 to 350 nm.

摘要翻译： 本发明提供一种低分子量聚四氟乙烯（PTFE）的水分散体，其含有易于除去的表面活性剂，并且具有良好的分散稳定性。 具体地说，本发明提供了包含四氟乙烯（TFE）单元或TFE单元的低分子量PTFE的水性分散体和可与TFE单元共聚的改性单体单元，其中，水分散体含有70〜9000ppm， 基于水分散体的下式（1）的含氟化合物：X-（CF 2）m -Y（1）其中X是H或F; m为3〜5的整数; Y是-SO 3 M，-SO 4 M，-SO 3 R，-SO 4 R，-COOM，-PO 3 M 2或-PO 4 M 2，M是H，NH 4或碱金属，R是具有1至12个碳原子的烷基， 分子量的PTFE的平均一次粒径为100〜350nm。

公开(公告)号：US09006333B2

公开(公告)日：2015-04-14

申请号：US13876361

申请日：2011-09-29

申请人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada ,  Masayuki Tsuji

发明人： Masayoshi Miyamoto ,  Taku Yamanaka ,  Yasuhiko Sawada ,  Masayuki Tsuji

IPC分类号： C08J3/16 ,  C08F14/26

CPC分类号： C08J3/16 ,  C08J2327/18

摘要： A method for manufacturing a polytetrafluoroethylene fine powder characterized by including the steps of (1) preparing an aqueous dispersion containing polytetrafluoroethylene, water, and a surfactant (A); (2) coagulating the polytetrafluoroethylene in the aqueous dispersion by agitating the aqueous dispersion with a discharge flow-type impeller; (3) collecting a wet powder of the polytetrafluoroethylene; and (4) drying the wet powder of the polytetrafluoroethylene.

摘要翻译： 其特征在于包括以下步骤：（1）制备含有聚四氟乙烯，水和表面活性剂（A）的水性分散体的步骤; （2）通过用排出流式叶轮搅拌水分散体而使水分散体中的聚四氟乙烯凝结; （3）收集聚四氟乙烯的湿粉末; 和（4）干燥聚四氟乙烯的湿粉末。

公开(公告)号：US20100087599A1

公开(公告)日：2010-04-08

申请号：US12527510

申请日：2008-02-18

申请人： Hiroyuki Yoshimoto ,  Hirokazu Yukawa ,  Yasuhiko Sawada ,  Taku Yamanaka ,  Masamichi Sukegawa

发明人： Hiroyuki Yoshimoto ,  Hirokazu Yukawa ,  Yasuhiko Sawada ,  Taku Yamanaka ,  Masamichi Sukegawa

IPC分类号： C08L27/12

CPC分类号： B29B13/007 ,  B29K2027/12 ,  B29K2027/18 ,  C08L27/16 ,  C08L27/18 ,  C08L2205/02 ,  C08L2666/04

摘要： The invention provides a fluororesin composition capable of providing a molded article having low relative dielectric constant, excellent in a temperature stability and causing only small transmission losses. The invention is a fluororesin composition wherein a rate of change in relative dielectric constant between 25° C. and 80° C. of a molded article produced therefrom under a standard condition is not greater than 0.2%.

摘要翻译： 本发明提供一种氟树脂组合物，其能够提供具有低相对介电常数的模制品，其温度稳定性优异并且仅导致较小的传输损失。 本发明是一种氟树脂组合物，其中在标准条件下由其制备的模塑制品在25℃和80℃之间的相对介电常数的变化率不大于0.2％。