公开(公告)号：US5176958A

公开(公告)日：1993-01-05

申请号：US715029

申请日：1991-06-13

申请人： Tetsuo Shimizu ,  Kazutaka Hosokawa ,  Masuo Kokumai ,  Makoto Ono

发明人： Tetsuo Shimizu ,  Kazutaka Hosokawa ,  Masuo Kokumai ,  Makoto Ono

IPC分类号： C08F214/26

CPC分类号： C08F214/262 ,  Y10T428/2982

摘要： Modified PTFE fine powder which comprises colloidal particles of a copolymer comprising repeating units derived from tetrafluoroethylene and 0.02 to 0.3% by weight, preferably 0.03 to 0.2% by weight of repeating units derived from at least one fluoroalkyl vinyl ether selected from compounds of the formula:X(CF.sub.2).sub.n OCF.dbd.CF.sub.2 (I)wherein X is a hydrogen, fluorine or chlorine atom and n is an integer of 1 to 6, andC.sub.3 F.sub.7 (OCF.sub.2 CF.sub.2 CF.sub.2).sub.m [OCF(CF.sub.3)CF.sub.2 ].sub.l OCF.dbd.CF.sub.2 (II)wherein m and l are each an integer of 0 to 4 provided that at least one of them is not zero, which has a number average particle size of 0.05 to 0.6 .mu.m, wherein the copolymer has a specific melt viscosity of from 6.times.10.sup.10 to 30.times.10.sup.10 poise, preferably from 8.0.times.10.sup.10 to 25.times.10.sup.10 poise at 380.degree. C. and a standard specific gravity (SSG, hereinafter defined) of from 2.135 to 2.175, preferably from 2.140 to 2.160 and a paste extruded article of the polymer has a green elongation of at least 400% is provided.

摘要翻译： 改性PTFE细粉末，其包含含有衍生自四氟乙烯的重复单元和0.02至0.3重量％，优选0.03至0.2重量％的衍生自至少一种氟代烷基乙烯基醚的重复单元的共聚物的胶体颗粒，所述氟代烷基乙烯基醚选自下式化合物： X（CF 2）n OCF = CF 2（I）其中X为氢，氟或氯原子，n为1〜6的整数，C 3 F 7（OCF 2 CF 2 CF 2）m [OCF（CF 3）CF 2] m和l各自为0〜4的整数，条件是它们中的至少一个不为零，其数均粒径为0.05至0.6μm，其中共聚物的比熔融粘度为6×10 10至30×10 10泊 ，优选在380℃下为8.0×10 10至25×10 10泊，标准比重（SSG，以下定义）为2.135至2.175，优选为2.140至2.160，并且聚合物的糊状挤出制品具有至少的绿色伸长率 提供400％。

公开(公告)号：US4840998A

公开(公告)日：1989-06-20

申请号：US89766

申请日：1987-08-27

申请人： Tetsuo Shimizu ,  Kazutaka Hosokawa

发明人： Tetsuo Shimizu ,  Kazutaka Hosokawa

IPC分类号： C08J3/12 ,  C08F2/00 ,  C08F2/18 ,  C08F214/26

CPC分类号： C08F214/262 ,  Y10S525/902

摘要： Modified PTFE fine powder which comprises primary particles having an average particle size of 0.1 to 0.6 .mu.m and contains 0.01 to 0.15% by weight, based on the total weight of the particles, of at least one olefinically unsaturated compound selected from the group consisting of a fluoroalkyl vinyl ether of the formula:X(CF.sub.2).sub.n OCF.dbd.CF.sub.2 (I)wherein X is a hydrogen atom, a fluorine atom or a chlorine atom and n is an integer of 1 to 6, and a fluoroalkyl vinyl ether of the formula:C.sub.3 F.sub.7 (OCF.sub.2 CF.sub.2 CF.sub.2).sub.m [OCF(CF.sub.3)CF.sub.2 ].sub.l OCF.dbd.CF.sub.2 (II)wherein m is an integer of 0 to 2 and l is an integer of 0 to 2 mainly in core parts of the particles and 0.04 to 0.25% by weight, based on the total weight of the particles, of chlorotrifluoroethylene in shell parts, which has good paste extrudability and heat stability.

摘要翻译： 改性PTFE细粉末，其包含平均粒度为0.1〜0.6μm的一次粒子，以所述粒子的总重量计含有0.01〜0.15重量％的至少一种选自以下的烯属不饱和化合物： 具有下式的氟烷基乙烯基醚：X（CF 2）n OCF = CF 2（I）其中X是氢原子，氟原子或氯原子，n是1至6的整数，并且式 ：C 3 F 7（OCF 2 CF 2 CF 2）m [OCF（CF 3）CF 2] l OCF = CF 2（II）其中m为0〜2的整数，l为0〜2的整数，主要为颗粒的核心部分，0.04〜0.25％ 重量，基于颗粒的总重量，三氯氟乙烯在壳部分中，其具有良好的浆料挤出性和热稳定性。

公开(公告)号：US06503988B1

公开(公告)日：2003-01-07

申请号：US09051805

申请日：1998-04-23

申请人： Takahiro Kitahara ,  Kazutaka Hosokawa ,  Tetsuo Shimizu

发明人： Takahiro Kitahara ,  Kazutaka Hosokawa ,  Tetsuo Shimizu

IPC分类号： C08F11418

CPC分类号： C08J3/16 ,  C08F14/26 ,  C08J2327/12 ,  C08L27/18 ,  C08L101/00 ,  C09K3/22 ,  C09K21/14 ,  C08F2/16 ,  C08L2666/04

摘要： A polytetrafluoroethylene fine powder excellent in powder flowability which comprises fine particles (the primary particle) having a mean particle diameter of 0.05 to 1 &mgr;m, an apparent density of 0.52 to 0.70 g/ml, a standard specific gravity (SSG) of 2.14 to 2.23, and a secondary mean particle diameter of 100 to 1000 &mgr;m, antidripping agent using the above polytetrafluoroethylene fine powder, flame resistive resin composition containing this powder, and composition for inhibiting dust characteristics containing this powder.

摘要翻译： 粉末流动性优异的聚四氟乙烯细粉末，其包含平均粒径为0.05〜1μm的微粒（一次粒子），表观密度为0.52〜0.70g / ml，标准比重（SSG）为2.14〜2.23 ，二次平均粒径为100〜1000μmol，使用上述聚四氟乙烯细粉末的防毒剂，含有该粉末的阻燃树脂组合物和含有该粉末的粉尘特性抑制组合物。

公开(公告)号：US06531557B1

公开(公告)日：2003-03-11

申请号：US09242272

申请日：1999-03-12

申请人： Kazutaka Hosokawa ,  Yoshinori Nanba ,  Takahisa Aoyama ,  Tetsuo Shimizu

发明人： Kazutaka Hosokawa ,  Yoshinori Nanba ,  Takahisa Aoyama ,  Tetsuo Shimizu

IPC分类号： C08F21426

CPC分类号： C08F214/262

摘要： A modified polytetrafluoroethylene fine powder containing agglomerates of colloidal particles with an average particle size of from 0.05 to 0.5 &mgr;m which comprise a copolymer of tetrafluoroethylene and an olefin-monomer represented by X(CF2)nOCF═CF2 in which X is a hydrogen atom, a fluorine atom or a chlorine atom, and n is an integer of 1 to 6, and/or C3F7(OCF2CF2CF2)m[OCF(CF3)CF2]pOCF═CF2 in which m and p are independently an integer of 0 to 4, provided that the sum of m and p is not 0 (zero), a content of the olefin monomer being from 0.02 to 0.3 wt. %, wherein the copolymer has a molecular weight distribution Mw/Mn of from 1.5 to 4.5 and a standard specific gravity of from 2.135 to 2.175. This modified polytetrafluoroethylene has good paste extrudability, and provides molded articles having good mechanical properties, in particular, pressure resistance.

摘要翻译： 一种改性聚四氟乙烯细粉末，其含有平均粒径为0.05〜0.5μm的胶体粒子的附聚物，其包含由X（CF 2）n OCF = CF 2（其中X为氢原子）表示的四氟乙烯与烯烃单体的共聚物， 氟原子或氯原子，n为1〜6的整数，和/或C 3 F 7（OCF 2 CF 2 CF 2）m [OCF（CF 3）CF 2] p OCF = CF 2，其中m和p分别为0〜4的整数， m和p的和不为0（零），烯烃单体的含量为0.02-0.3重量％。 ％，其中共聚物的分子量分布Mw / Mn为1.5〜4.5，标准比重为2.135〜2.175。 该改性聚四氟乙烯具有良好的糊料挤出性，并提供具有良好机械性能，特别是耐压性的模制品。

公开(公告)号：US5143783A

公开(公告)日：1992-09-01

申请号：US435170

申请日：1989-11-13

申请人： Tetsuo Shimizu ,  Kazutaka Hosokawa

发明人： Tetsuo Shimizu ,  Kazutaka Hosokawa

IPC分类号： C08J9/24 ,  C08J9/28

CPC分类号： C08J9/24 ,  C08J9/28 ,  C08J2327/18 ,  Y10T428/254 ,  Y10T428/31544

摘要： A polytetrafluoroethylene porous film obtainable by applying an aqueous dispersion of emulsion polymerized polytetrafluoroethylene particles having an average minor particle size of 1 to 500 nm and an average aspect ratio of at least 10 on a substrate, drying the applied dispersion and optionally sintering the dried polytetrafluoroethylene particles on the substrate to obtain the polytetrafluoroethylene porous film, which has a uniform thin thickness.

公开(公告)号：US5324785A

公开(公告)日：1994-06-28

申请号：US133787

申请日：1993-10-08

申请人： Yoshihisa Noda ,  Kazutaka Hosokawa ,  Toshio Mizuno ,  Kiyohiko Ihara ,  Tetsuo Shimizu

发明人： Yoshihisa Noda ,  Kazutaka Hosokawa ,  Toshio Mizuno ,  Kiyohiko Ihara ,  Tetsuo Shimizu

IPC分类号： C08J3/02 ,  C08F2/22 ,  C08F14/26 ,  C08F259/08 ,  C08J3/16 ,  C08L27/06 ,  C08L27/18

CPC分类号： C08F259/08 ,  Y10S525/902

摘要： Colloidal polytetrafluoroethylene fine particles having an average particle size of 0.05 to 1.0 .mu.m and each comprising a core made of polytetrafluoroethylene which has a high molecular weight and can be fibrilled and a shell surrounding the core and made of a low molecular weight polytetrafluoroethylene which is not fibrilled, which has good dispersibility in water or an organic solvent and easily provides an organosol by a phase transfer method.

摘要翻译： 平均粒径为0.05〜1.0μm的胶体型聚四氟乙烯微粒，各自包含由聚四氟乙烯制成的芯，该聚四氟乙烯具有高分子量并且可以被纤维化，壳体围绕芯并且由低分子量聚四氟乙烯制成，不是 纤维状，其在水或有机溶剂中具有良好的分散性，并且通过相转移法容易地提供有机溶胶。

公开(公告)号：US5284708A

公开(公告)日：1994-02-08

申请号：US957895

申请日：1992-10-08

申请人： Tetsuo Shimizu ,  Kazutaka Hosokawa ,  Masuo Kokumai ,  Makoto Ono

发明人： Tetsuo Shimizu ,  Kazutaka Hosokawa ,  Masuo Kokumai ,  Makoto Ono

IPC分类号： C08F214/26 ,  B32B5/16 ,  C08F116/12

CPC分类号： C08F214/262 ,  Y10T428/2982

摘要： Modified PTFE fine powder which comprises colloidal particles of a copolymer comprising repeating units derived from tetrafluoroethylene and 0.02 to 0.3 % by weight, preferably 0.03 to 0.2% by weight of repeating units derived from at least one fluoroalkyl vinyl ether selected from compounds of the formula:X(CF.sub.2).sub.n OCF.dbd.CF.sub.2 (I)wherein X is a hydrogen, fluorine or chlorine atom and n is an integer of 1 to 6, andC.sub.3 F.sub.7 (OCF.sub.2 CF.sub.2 CF.sub.2).sub.m [OCF(CF.sub.3)CF.sub.2 ].sub.1 OCF.dbd.CF.sub.2 (II)wherein m and 1 are each an integer of 0 to 4 provided that at least one of them is not zero, which has a number average particle size of 0.05 to 0.6 .mu.m, wherein the copolymer has a specific melt viscosity of from 6.times.10.sup.10 to 30.times.10.sup.10 poise, preferably from 8.0.times.10.sup.10 to 25.times.10.sup.10 poise at 380.degree. C. and a standard specific gravity (SSG, hereinafter defined) of from 2.135 to 2.175, preferably from 2.140 to 2.160 and a paste extruded article of the polymer has a green elongation of at least 400% is provided.

摘要翻译： 改性PTFE细粉末，其包含含有衍生自四氟乙烯的重复单元和0.02至0.3重量％，优选0.03至0.2重量％的衍生自至少一种氟代烷基乙烯基醚的重复单元的共聚物的胶体颗粒，所述氟代烷基乙烯基醚选自下式化合物： X（CF 2）n OCF = CF 2（I）其中X为氢，氟或氯原子，n为1至6的整数，C 3 F 7（OCF 2 CF 2 CF 2）m（OCF（CF 3）CF 2） m和1各自为0〜4的整数，条件是它们中的至少一个不为零，其数均粒径为0.05〜0.6（my）m，其中，共聚物的比熔融粘度为6 * 在380℃下优选为1010至30 * 1010泊，优选为8.0 * 1010至25 * 1010泊，标准比重（SSG，以下定义）为2.135至2.175，优选为2.140至2.160， 提供聚合物具有至少400％的绿色伸长率。

公开(公告)号：US5118788A

公开(公告)日：1992-06-02

申请号：US696194

申请日：1991-05-06

申请人： Kazutaka Hosokawa ,  Tetsuo Shimizu ,  Kazuo Ishiwari ,  Noriyasu Yamane

发明人： Kazutaka Hosokawa ,  Tetsuo Shimizu ,  Kazuo Ishiwari ,  Noriyasu Yamane

IPC分类号： C08J3/12

CPC分类号： C08J3/12 ,  C08J2327/18

摘要： Polytetrafluoroethylene powder having an average particle size of 1 to 30 .mu.m and a specific surface area of 2 to 6 m.sup.2 /g is prepared by heating unsintered polytetrafluoroethylene powder having a melting point of 313.degree. to 330.degree. C. at a temperature in a range from a temperature 70.degree. C. lower than the melting point to a temperature lower than the melting point and comminuting the heated powder.

公开(公告)号：US20060241214A1

公开(公告)日：2006-10-26

申请号：US11364549

申请日：2006-03-01

申请人： Allan Britnell ,  Marty Simpson ,  James Conheady ,  Kazutaka Hosokawa

发明人： Allan Britnell ,  Marty Simpson ,  James Conheady ,  Kazutaka Hosokawa

IPC分类号： C08J3/22

CPC分类号： C08F6/20 ,  C08L27/12

摘要： The method for concentrating a fluoropolymer in a fluoropolymer aqueous dispersion includes a step for preparing a fluoropolymer aqueous dispersion, and a step for filtering the fluoropolymer aqueous dispersion in a polymer membrane. The polymer membrane oscillates during the filtration. The method for concentrating a water-soluble, fluorine-containing emulsifier in an aqueous solution containing the water-soluble, fluorine-containing emulsifier includes a step for preparing an aqueous solution containing a water-soluble, fluorine-containing emulsifier, and a step for filtering the aqueous containing the water-soluble, fluorine-containing emulsifier in a polymer membrane. The polymer membrane oscillates during both the filtration steps.

摘要翻译： 将含氟聚合物浓缩在含氟聚合物水分散体中的方法包括制备含氟聚合物水分散体的步骤和用于过滤聚合物膜中的含氟聚合物水分散体的步骤。 聚合物膜在过滤期间振荡。 将水溶性含氟乳化剂浓缩在含有水溶性含氟乳化剂的水溶液中的方法包括制备含有水溶性含氟乳化剂的水溶液的工序， 在聚合物膜中过滤含有水溶性含氟乳化剂的水溶液。 聚合物膜在两个过滤步骤中都会振荡。

公开(公告)号：US6136893A

公开(公告)日：2000-10-24

申请号：US171123

申请日：1998-10-13

申请人： Masanori Yamashita ,  Toshiro Miura ,  Shinji Murakami ,  Shoji Kawachi ,  Tadao Hayashi ,  Kazutaka Hosokawa

发明人： Masanori Yamashita ,  Toshiro Miura ,  Shinji Murakami ,  Shoji Kawachi ,  Tadao Hayashi ,  Kazutaka Hosokawa

IPC分类号： C08F6/20 ,  C08L3/00

CPC分类号： C08F6/20

摘要： To provide the method for concentrating an aqueous dispersion of fluorine-containing polymer particles containing a surfactant, which is applicable to a fluorine-containing polymer such as PTFE being easily fibrilated and assures low energy, low cost and short term concentration only by using various kinds of surfactants in a small amount. The method for concentrating an aqueous dispersion of fluorine-containing polymer particles containing the surfactant by feeding the aqueous dispersion of fluorine-containing polymer particles containing the surfactant in an amount of 2.0 to 8.0% by weight based on a solid content of the fluorine-containing polymer to a micro filtration membrane having a pore size of 0.01 to 1 .mu.m with aqueous dispersion feeding means which does not substantially generate shearing force and then removing an aqueous medium containing the surfactant from the aqueous dispersion.

摘要翻译： PCT No.PCT / JP98 / 00452 Sec。 371日期：1998年10月13日 102（e）1998年10月13日日期PCT提交1998年2月4日PCT公布。 第WO98 / 36017号公报 日期1998年08月20日为了提供浓缩含有表面活性剂的含氟聚合物粒子的水分散体的方法，其适用于容易原纤化的PTFE等含氟聚合物，能够保证低能量，低成本，短期浓度 只能通过少量使用各种表面活性剂。 通过将含有表面活性剂的含氟聚合物粒子的含水分散体的含量为2.0〜8.0重量％，含有表面活性剂的含氟聚合物粒子的含水分散液浓缩， 聚合物与孔径为0.01〜1μm的微滤膜相比，水分散体供给装置基本上不产生剪切力，然后从水分散体除去含有表面活性剂的水性介质。