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：US5115038A

公开(公告)日：1992-05-19

申请号：US698863

申请日：1991-05-13

申请人： Kiyohiko Ihara ,  Katsuhide Ontani ,  Yutaka Nakata ,  Toshio Miyatani

发明人： Kiyohiko Ihara ,  Katsuhide Ontani ,  Yutaka Nakata ,  Toshio Miyatani

IPC分类号： C08F8/20 ,  C08F8/22 ,  C08F8/30 ,  C08F214/26

CPC分类号： C08F214/262 ,  C08F8/44 ,  C08F2800/20

摘要： A copolymer of tetrafluoroethylene and a perfluoro(alkyl vinyl ether) having the formula (I):CF.sub.2 .dbd.CF--O--Rf (I)wherein Rf is a perfluoroalkyl group having 3 or 4 carbon atoms; and said copolymer having 1 to 10% by weight of the perfluoro(alkyl vinyl ether) units, having 7 to 20, per 10.sup.6 carbon atoms, of terminal groups --CONH.sub.2, having substantially no --CH.sub.2 OH and no --COF, and having a melt viscosity at 380.degree. C. of 0.1.times.10.sup.4 to 100.times.10.sup.4 poise and a preparation process thereof. The tetrafluoroethylene copolymer is thermally stable and has excellent powder properties. Molded articles thereform have a few bubbles and excellent dimensional stability on heating.

公开(公告)号：US4900874A

公开(公告)日：1990-02-13

申请号：US308926

申请日：1989-02-13

申请人： Kiyohiko Ihara ,  Fumihiko Yamaguchi ,  Shinichi Yamane

发明人： Kiyohiko Ihara ,  Fumihiko Yamaguchi ,  Shinichi Yamane

IPC分类号： C07B61/00 ,  B01J21/18 ,  C07C17/00 ,  C07C17/35 ,  C07C21/18 ,  C07C67/00

CPC分类号： C07C17/00

摘要： A method for producing a fluorine-containing olefin represented by formula (I):Ch.sub.2 .dbd.CFR.sub.f (I)wherein R.sub.f represents a perfluoroalkyl group or a fluoroalkyl group comprising the step of contacting, at a high temperature, hydrogen gas with a 1,1-dihydro-2,2-difluoro alcohol represented by formula (II):HOCH.sub.2 CF.sub.2 R.sub.f (II)wherein R.sub.f represents a perfluoroalkyl group or a fluoroalkyl group.

公开(公告)号：US4585306A

公开(公告)日：1986-04-29

申请号：US667056

申请日：1984-10-31

申请人： Akira Ohmori ,  Nobuyuki Tomihashi ,  Kiyohiko Ihara

发明人： Akira Ohmori ,  Nobuyuki Tomihashi ,  Kiyohiko Ihara

IPC分类号： B29C47/00 ,  C03C17/32 ,  C03C25/10 ,  C08F10/00 ,  C08F14/00 ,  C08F210/00 ,  C08F210/02 ,  C08F214/26 ,  C08L23/08 ,  C08L23/28 ,  G02B1/04 ,  G02B6/00 ,  G02C7/04

CPC分类号： G02B6/02033 ,  C03C17/32 ,  C03C25/105 ,  C08L23/08 ,  G02B1/043 ,  G02B1/048 ,  B29C47/00 ,  B29C47/0014 ,  C08L23/28

摘要： An optical material comprising a copolymer of:(1) ethylene,(2) at least one of tetrafluoroethylene and chlorotrifluoroethylene and(3) olefin having at least one fluoroalkyl group,and a cladding material as used in assembling an optical fiber which comprises the copolymer as defined in above.

摘要翻译： 一种光学材料，其包含以下共聚物：（1）乙烯，（2）四氟乙烯和氯三氟乙烯中的至少一种和（3）具有至少一个氟代烷基的烯烃和用于组装光纤的包层材料， 如上所述。

公开(公告)号：US4521575A

公开(公告)日：1985-06-04

申请号：US576426

申请日：1984-02-02

申请人： Shinichi Nakagawa ,  Kiyohiko Ihara

发明人： Shinichi Nakagawa ,  Kiyohiko Ihara

IPC分类号： C08F210/02 ,  C08F214/26 ,  C08F214/18

CPC分类号： C08F210/02 ,  C08F214/265

摘要： A copolymer comprising monomeric units of tetrafluoroethylene, ethylene and at least one monomeric compound selected from the group consisting of 2-trifluoromethylpropylene and 2-methyl-1,1,3,3,3-pentafluoropropylene, which has a improved crack resistance at a high temperature.

摘要翻译： 一种包含四氟乙烯，乙烯和至少一种选自2-三氟甲基丙烯和2-甲基-1,1,3,3,3-五氟丙烯的单体单元的共聚物，其在高温下具有改善的抗裂性 温度。

公开(公告)号：US4499249A

公开(公告)日：1985-02-12

申请号：US489289

申请日：1983-04-28

申请人： Shinichi Nakagawa ,  Tsuneo Nakagawa ,  Sadaatsu Yamaguchi ,  Kiyohiko Ihara ,  Toshihiko Amano ,  Mitsugu Omori ,  Kohzoh Asano

发明人： Shinichi Nakagawa ,  Tsuneo Nakagawa ,  Sadaatsu Yamaguchi ,  Kiyohiko Ihara ,  Toshihiko Amano ,  Mitsugu Omori ,  Kohzoh Asano

IPC分类号： C08F2/00 ,  C08F2/18 ,  C08F4/00 ,  C08F4/28 ,  C08F4/34 ,  C08F14/00 ,  C08F16/00 ,  C08F16/14 ,  C08F214/26 ,  C08F216/14

CPC分类号： C08F214/262

摘要： A process for preparing a tetrafluoroethylene/fluoro(alkyl vinyl ether) copolymer comprising polymerizing tetrafluoroethylene and fluoro(alkyl vinyl ether) in an aqueous suspension system which comprises a mixed medium of water and a fluorohydrocarbon or a chlorofluorohydrocarbon in a volume ratio of from 1:1 to 10:1 at a temperature of from 0.degree. to 25.degree. C. in the presence of a polymerization initiator of the formula:[Cl(CF.sub.2).sub.n --COO].sub.2 (I)wherein n is an integer of 1 to 10, the copolymer obtained by the process having a small number of unstable terminal groups and excellent flex life.

摘要翻译： 一种制备四氟乙烯/氟（烷基乙烯基醚）共聚物的方法，包括在水性悬浮体系中聚合四氟乙烯和氟（烷基乙烯基醚），其包含水和氟代烃或氯氟烃的混合介质，其体积比为1： 在下式的聚合引发剂存在下，在0℃至25℃的温度下为1至10：1：[Cl（CF 2）n -CO 2] 2（I）其中n为1至10的整数 通过该方法获得的共聚物具有少量不稳定的端基并且具有优异的弯曲寿命。

公开(公告)号：US06365243B1

公开(公告)日：2002-04-02

申请号：US08765454

申请日：1997-01-22

申请人： Katsuhide Otani ,  Kiyohiko Ihara

发明人： Katsuhide Otani ,  Kiyohiko Ihara

IPC分类号： C08F1418

CPC分类号： C08J3/12 ,  C08F6/00 ,  C08F214/18 ,  C08J2327/12 ,  Y10T428/1352 ,  Y10T428/139 ,  Y10T428/1397 ,  C08L27/12

摘要： The fine powder of high molecular weight fluorine containing resins having melt viscosities of 106 to 1013 poise, apparent density of 0.4 to 1.5 g/cc, and specific surface area of 2 m2/g or less, mold goods of the fine powder and these production methods. By utilizing the fine powder of high molecular weight flourine containing fused resins that have previously not been employed, the mold goods obtained from the fine powder have fewer liquated particles and have become the most suitable especially for manufacturing semiconductors. The powder's products have greater resistance to flex fatigue, abrasion, resistance, etc.

摘要翻译： 熔融粘度为106〜1013泊，表观密度为0.4〜1.5g / cc，比表面积为2m 2 / g以下的高分子含氟树脂的细粉末，细粉的成型品和这些制造 方法。 通过利用以前没有使用的含有熔融树脂的高分子量的含氟粉末，从细粉中获得的模具具有较少的液化颗粒，并且已经变得最适合于制造半导体。 粉末的产品具有较强的耐疲劳性，耐磨性，耐磨性等优点。

公开(公告)号：US5789504A

公开(公告)日：1998-08-04

申请号：US619654

申请日：1996-03-22

申请人： Kiyohiko Ihara ,  Kazuhiro Nakai ,  Yoshiki Maruya

发明人： Kiyohiko Ihara ,  Kazuhiro Nakai ,  Yoshiki Maruya

IPC分类号： C08F2/00 ,  C08F2/04 ,  C08F2/06 ,  C08F2/14 ,  C08F14/26

CPC分类号： C08F14/26

摘要： A process for preparing low molecular weight polytetrafluoroethylene having a melting point of 250.degree. C. to 325.degree. C. comprising polymerizing tetrafluoroethylene in at least one polymerization solvent selected from the group consisting of hydrochlorofluorocarbons, hydrofluorocarbons and perfluorocarbons which have boiling points in the range between -10.degree. C. and 70.degree. C. under constant pressure by the supplement of tetrafluoroethylene. According to this process, the low molecular weight polytetrafluoroethylene which is useful as an additive to various materials is produced in the solvent which has a low ozone destruction factor or does not destroy the ozone, under economically advantageous low pressure which can be controlled safely.

摘要翻译： PCT No.PCT / JP94 / 01558 Sec。 371日期：1996年3月22日 102（e）1996年3月22日PCT PCT 1994年9月22日PCT公布。 公开号WO95 / 08580 日期：1995年3月30日一种制备熔点为250℃至325℃的低分子量聚四氟乙烯的方法，包括在至少一种聚合溶剂中聚合四氟乙烯，所述聚合溶剂选自氢氟氯烃，氢氟烃和具有沸点的全氟化碳 通过补充四氟乙烯在恒定压力下在-10℃至70℃的范围内。 根据该方法，可以在可以安全控制的经济上有利的低压下，在具有低臭氧破坏因子或不破坏臭氧的溶剂中生产可用作各种材料的添加剂的低分子量聚四氟乙烯。

公开(公告)号：US5145925A

公开(公告)日：1992-09-08

申请号：US680112

申请日：1991-04-03

申请人： Kiyohiko Ihara ,  Fumihiko Yamaguchi

发明人： Kiyohiko Ihara ,  Fumihiko Yamaguchi

IPC分类号： C08F14/24 ,  C08F214/24

CPC分类号： C08F214/242

摘要： A copolymer comprising chlorotrifluoroethylene and 0.01 to 1% by mole of perfluoro(alkyl vinyl ether) of the formula:R.sub.f --O--CF.dbd.CF.sub.2 (I)wherein R.sub.f is a C.sub.3 -C.sub.6 perfluoroalkyl group, and having a melt flow rate of 0.01 to 200.times.10.sup.-3 cc/sec., which has good mechanical strength and sufficiently high melting point.

公开(公告)号：US4677175A

公开(公告)日：1987-06-30

申请号：US736314

申请日：1985-05-21

申请人： Kiyohiko Ihara ,  Tsuneo Nakagawa

发明人： Kiyohiko Ihara ,  Tsuneo Nakagawa

IPC分类号： B65D39/00 ,  C08F214/26 ,  C08F14/26

CPC分类号： B65D39/0029 ,  C08F214/265 ,  B65D2539/008

摘要： A copolymer comprising monomeric units derived from ethylene, tetrafluoroethylene and a fluorine-containing vinyl monomer which provides the copolymer with side chains having at least one carbon atom, wherein the molar ratio of tetrafluoroethylene and ethylene is from 62:38 to 90:10 and the content of the fluorine-containing vinyl monomer is from 0.1 to 10% by mole based on the total number of mole of ethylene and tetrafluoroethylene, which has improved flexibility and better flame retardance.

摘要翻译： 一种包含衍生自乙烯，四氟乙烯和含氟乙烯基单体的单体单元的共聚物，该共聚物具有至少一个碳原子的侧链，其中四氟乙烯和乙烯的摩尔比为62:38至90:10， 含氟乙烯基单体的含量相对于乙烯和四氟乙烯的总摩尔数为0.1〜10摩尔％，其具有改善的柔性和更好的阻燃性。