公开(公告)号：US4879338A

公开(公告)日：1989-11-07

申请号：US701279

申请日：1985-02-13

Applicant: Frank W. Mercer ,  Michael F. Froix ,  Tai C. Cheng

Inventor： Frank W. Mercer ,  Michael F. Froix ,  Tai C. Cheng

IPC: C08L71/00

CPC classification number: C08L71/00

Abstract: This invention discloses novel composition comprising a blend of a poly(aryl ether ketone) and from about 1% to about 50% of poly(phenylene oxide). The blends have high use temperatures, abraision resistance and solvent resistance, and are extrudable. Further, the blends can be crosslinked.

Abstract translation: 本发明公开了包含聚（芳基醚酮）和约1％至约50％的聚（苯醚）共混物的新型组合物。 共混物具有高的使用温度，耐磨性和耐溶剂性，并且是可挤出的。 此外，共混物可以是交联的。

公开(公告)号：US4514620A

公开(公告)日：1985-04-30

申请号：US535449

申请日：1983-09-22

Applicant: Tai C. Cheng ,  Bruce A. McKinley

Inventor： Tai C. Cheng ,  Bruce A. McKinley

IPC: C08L101/00 ,  A61F7/00 ,  A61F7/02 ,  C08K3/04 ,  C08K3/08 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L33/00 ,  C08L33/02 ,  C08L45/00 ,  C08L67/00 ,  H01B1/12 ,  H01B1/24 ,  H01C7/02 ,  H05B3/10 ,  H05B3/14

CPC classification number: H05B3/146 ,  A61F7/007 ,  C08K3/04 ,  H01B1/24 ,  H01C7/027 ,  A61F2007/0001 ,  A61F2007/0074

Abstract: Conductive polymer compositions which exhibit PTC behavior and comprise carbon black (or other particulate conductive filler) dispersed in a cross-linked polymer component comprising a cycloolefin polymer having a crystallinity of at least 5% and a melting point in the range 0.degree. to 80.degree. C. These compositions are particularly useful in the form of heaters which self regulate at a temperature in the range of 0.degree. to 70.degree. C. Such heaters are particularly useful for freeze protection and for heating human and other animal bodies.

Abstract translation: 具有PTC性能并且分散在交联聚合物组分中的炭黑（或其它颗粒状导电填料）的导电聚合物组合物包含结晶度至少为5％，熔点在0°至80°范围内的环烯烃聚合物 这些组合物特别适用于在0℃至70℃范围内自调节的加热器的形式。这种加热器特别适用于防冻和加热人体和其他动物体。

公开(公告)号：US4152314A

公开(公告)日：1979-05-01

申请号：US876384

申请日：1978-02-09

Applicant: Tai C. Cheng

Inventor： Tai C. Cheng

IPC: C08G79/00 ,  C08G79/02 ,  C08L85/02 ,  C08K5/53

CPC classification number: C08G79/025 ,  C08L85/02

Abstract: Leathery aryloxy polyphosphazenes are converted to useful elastomers by the presence of relatively low molecular weight oils in said polymers. The oils may be present as a result of the manner in which the polyaryloxyphosphazenes have been prepared or as an intentional addition to the phosphazene polymer.

Abstract translation: 通过在所述聚合物中存在相对低分子量的油，将革质芳氧基聚磷腈转化为有用的弹性体。 由于已经制备了聚芳基氧膦腈的方式或作为有意添加到磷腈聚合物中，油可以存在。

公开(公告)号：US08512335B2

公开(公告)日：2013-08-20

申请号：US12783714

申请日：2010-05-20

Applicant: Elbert T. Cheng ,  Tai C. Cheng ,  Jacqueline T. Cheng

Inventor： Elbert T. Cheng ,  Tai C. Cheng ,  Jacqueline T. Cheng

IPC: A61B18/14

CPC classification number: A61B18/1233 ,  A61B2017/00473 ,  A61B2018/00452 ,  A61B2018/00678 ,  A61B2018/0072 ,  A61B2018/00732 ,  A61B2018/00869 ,  A61B2018/00916 ,  A61B2018/1226 ,  A61B2018/1417 ,  A61B2018/143

Abstract: A high frequency alternating current medical device and method of using such is disclosed. High frequency alternating current medical device comprises a power source, an electric field generator, a self-limiting conductive material electrical component, at least one probe or needle-type projection, and at least two conductive segments located on probe or needle-type projection. At least two conductive segments are electrically connected to electric field generator so that an electric field is created between conductive segments, which induces an electrical current, which generates heat, and causes a certain desired precise cell injury. Self-limiting conductive material electrical component allows such precise cell injury because it limits electrical current through target tissue. Invention may be used in medical, dental, or veterinary applications. Exemplary embodiments include cosmetic applications, treatment of wrinkles, remodeling of subcutaneous tissue, treatment of muscle spasms, and others. Medical device can be small, hand-held, and easily manipulated to perform surgery.

Abstract translation: 公开了一种高频交流医疗装置及其使用方法。 高频交流医疗装置包括电源，电场发生器，自限制导电材料电组件，至少一个探针或针型突起，以及位于探针或针型突起上的至少两个导电段。 至少两个导电段电连接到电场发生器，使得在导电段之间产生电场，这引起电流，其产生热量，并且引起某些所需的精确的细胞损伤。 自限制导电材料电气部件允许这种精确的细胞损伤，因为它限制通过靶组织的电流。 本发明可用于医疗，牙科或兽医领域。 示例性实施方案包括化妆品应用，皱纹的治疗，皮下组织的重塑，肌肉痉挛的治疗等。 医疗器械可以小型，手持式，操作方便，进行手术。

公开(公告)号：US5849846A

公开(公告)日：1998-12-15

申请号：US476101

申请日：1995-06-06

Applicant: Ziyun Chen ,  Tai C. Cheng ,  Jeong S. Lee ,  Ketan P. Muni ,  Udayan Patel ,  Robert P. Saltman

Inventor： Ziyun Chen ,  Tai C. Cheng ,  Jeong S. Lee ,  Ketan P. Muni ,  Udayan Patel ,  Robert P. Saltman

IPC: A61L29/00 ,  A61L29/04 ,  A61M25/00 ,  A61M25/16 ,  C08L23/02 ,  C08L67/00 ,  C08L67/02 ,  C08L77/00 ,  A61M25/10 ,  A61M29/02

CPC classification number: A61L29/049 ,  A61M25/1029 ,  C08L67/02 ,  A61M2025/1031 ,  A61M25/0009

Abstract: A catheter and/or balloon for a medical catheter is formed from a blend of polymeric components, including a first crystalline polymeric component and a second softening polymeric component. The polymeric material can also include a third compatibilizing agent to facilitate blending the first two polymeric components together. The first polymeric component can be a polyester or a polyamide, and the second polymeric component can be a polyolefin, or an ethylene copolymer. The third polymeric component is preferably an ethylene copolymer containing a reactive group that forms a covalent bond with the first polymeric component. The polymeric material forming the balloon or catheter also can include a catalyst to catalyze a reaction between the compatibilizing ethylene copolymer and the second polymer component. The second, softening polymeric component can also include a silane coupling agent, to provide a reactive softening copolymer that bonds with the first strong polymeric component, to provide increased flexibility of catheters and balloons formed from the polymeric components. The properties of the balloon and catheter formed from the polymeric material can be enhanced by crosslinking by irradiation of the polymeric material.

Abstract translation: 用于医疗导管的导管和/或气囊由聚合物组分的混合物形成，包括第一结晶聚合物组分和第二软化聚合物组分。 聚合物材料还可以包括第三相容剂以便于将前两个聚合物组分共混在一起。 第一聚合物组分可以是聚酯或聚酰胺，第二聚合物组分可以是聚烯烃或乙烯共聚物。 第三聚合物组分优选是含有与第一聚合物组分形成共价键的反应性基团的乙烯共聚物。 形成气囊或导管的聚合物材料还可以包括催化剂，以催化相容性乙烯共聚物和第二聚合物组分之间的反应。 第二软化聚合物组分还可以包括硅烷偶联剂，以提供与第一强聚合物组分键合的反应性软化共聚物，以提供由聚合物组分形成的导管和气囊的增加的柔性。 由聚合物材料形成的球囊和导管的性质可以通过聚合材料的照射交联来增强。

公开(公告)号：US5554679A

公开(公告)日：1996-09-10

申请号：US447749

申请日：1995-05-23

Applicant: Tai C. Cheng

Inventor： Tai C. Cheng

IPC: C08K3/04 ,  C08L23/04 ,  H01C7/02 ,  C08K3/00

CPC classification number: H01C7/027 ,  C08K3/04 ,  C08L23/06 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2207/068

Abstract: A conductive polymer composition exhibiting PTC behavior and the method of making the composition are disclosed. The composition includes a particulate conductive filler and a polymeric portion. The polymeric portion contains a volume-expansion-regulating high molecular weight polymer, such as ultra high molecular weight polyethylene (UHMWPE), that resists melting and causes an increase in the volume of the composition, upon heating, but migrates minimally within the composition. The high molecular weight polymer preferably has a linear thermal expansion coefficient of at least 200.times.10.sup.-6 /.degree. C. The polymeric portion also contains a melt-extrudable polyolefin matrix in which the conductive filler and the high molecular weight polymer are dispersed. The high molecular weight polymer is present in an amount which allows the final composition to be melt-extrudable. An electrical device containing a PTC element that utilizes the novel composition and at least two electrodes is also disclosed. The resulting materials are applicable to switch devices, self-limiting heaters, EMI, ESD, utility, and telecommunications components.

Abstract translation: 公开了具有PTC行为的导电聚合物组合物和制备该组合物的方法。 组合物包括颗粒状导电填料和聚合物部分。 聚合物部分包含体积膨胀调节型高分子量聚合物，例如超高分子量聚乙烯（UHMWPE），其耐热熔融并且在加热时导致组合物的体积增加，但在组合物内最低程度地迁移。 高分子量聚合物优选具有至少200×10 -6 /℃的线性热膨胀系数。聚合物部分还包含分散导电填料和高分子量聚合物的可熔融挤出的聚烯烃基质。 高分子量聚合物以允许最终组合物可熔融挤出的量存在。 还公开了一种包含利用该新组合物和至少两个电极的PTC元件的电气装置。 所得到的材料适用于开关设备，自限制加热器，EMI，ESD，公用事业和电信部件。

公开(公告)号：US5554121A

公开(公告)日：1996-09-10

申请号：US280210

申请日：1994-07-25

Applicant: Robert D. Ainsworth ,  Tai C. Cheng ,  Lawrence D. Wasicek

Inventor： Robert D. Ainsworth ,  Tai C. Cheng ,  Lawrence D. Wasicek

IPC: A61L29/00 ,  A61L29/06 ,  A61L29/14 ,  A61M25/00 ,  A61M29/02 ,  A61M29/00

CPC classification number: A61M25/104 ,  A61L29/06 ,  A61L29/14 ,  A61M25/0054 ,  A61M25/0045

Abstract: A balloon dilatation having a relatively stiff proximal catheter shaft which is formed at least in part of an engineering thermoplastic polymer material with a tensile strength of at least about 10,000 psi, an elongation of at least 50% and a tensile modulus of at least 300,000 psi. The polymer is preferably an aromatic polymer, and particularly polyetheretherketone.

Abstract translation: 具有相对刚性的近端导管轴的球囊扩张，其至少部分地由至少约10,000psi的拉伸强度，至少50％的伸长率和至少300,000psi的拉伸模量形成在工程热塑性聚合物材料中 。 聚合物优选为芳族聚合物，特别是聚醚醚酮。

公开(公告)号：US4242493A

公开(公告)日：1980-12-30

申请号：US31579

申请日：1979-04-19

Applicant: Tai C. Cheng ,  John R. Schreffler

Inventor： Tai C. Cheng ,  John R. Schreffler

IPC: C08G79/02 ,  C08G79/04 ,  C08G79/14

CPC classification number: C08G79/025

Abstract: A method of producing substantially pure polyhalophenoxyphosphazene homopolymers or copolymers which are free from phenoxy groups formed by reduction of halophenols is provided. The method involves as a first step preparing a substantially pure sodium salt of a halogen-substituted phenol (in the case of homopolymers) or the substantially pure sodium salts of a mixture of a halogen-substituted phenol and an alkyl or alkoxy-substituted phenol, alkanol, or fluoroalkanol (in the case of copolymers) by reacting said halogen-substituted phenol or mixture with sodium hydride. Following this procedure, the resultant sodium salt or salts are reacted with a poly(dichlorophosphazene) of the formula (NPCl.sub.2).sub.n, in which n is from 20 to 50,000, to produce a mixture of polyhalophenoxyphosphazene homopolymer or copolymer and sodium chloride. The sodium chloride is then separated from the mixture to produce a substantially pure polyhalophenoxyphosphazene homopolymer or copolymer which is free from phenoxy groups.

Abstract translation: 提供了生产基本上纯的多卤代苯氧基膦腈均聚物或共聚物的方法，所述均聚物或共聚物不含由卤代酚还原形成的苯氧基。 该方法包括作为制备基本上纯的卤素取代的苯酚（在均聚物的情况下）的钠盐或卤素取代的酚和烷基或烷氧基取代的苯酚的混合物的基本上纯的钠盐的第一步， 链烷醇或氟烷醇（在共聚物的情况下）通过使所述卤素取代的苯酚或混合物与氢化钠反应。 按照该方法，将所得的钠盐或盐与式（NPCl 2）n的聚（二氯膦腈）反应，其中n为20至50,000，以产生多卤代苯氧基磷腈均聚物或共聚物与氯化钠的混合物。 然后从混合物中分离氯化钠，以产生基本上纯的不含苯氧基的多卤代苯氧基磷腈均聚物或共聚物。

公开(公告)号：US4207403A

公开(公告)日：1980-06-10

申请号：US30598

申请日：1979-04-16

Applicant: Tai C. Cheng ,  John W. Fieldhouse ,  Arthur E. Oberster ,  Daniel F. Graves

Inventor： Tai C. Cheng ,  John W. Fieldhouse ,  Arthur E. Oberster ,  Daniel F. Graves

IPC: C08G79/02 ,  C08J9/10 ,  C08L85/02 ,  H01B3/30

CPC classification number: C08J9/10 ,  C08G79/025 ,  C08L85/02 ,  H01B3/30 ,  C08J2385/02 ,  Y10T428/294

Abstract: Poly(aryloxyphosphazene) copolymers are prepared having randomly repeating units represented by the formula: ##STR1## wherein R and R.sup.1 may be the same or different and are selected from the group consisting of monovalent aryl radicals and substituted aryl radicals having the structure: ##STR2## wherein X is a substituent selected from the group consisting of alkyl, alkoxy, aryl, aryloxy, amino and halogen substituted on any sterically permissible position on the phenyl group; and wherein the amount of Cl present in the form of P-Cl bonds is from about 0.4 percent to about 10 percent by weight based upon the total weight of copolymer.The copolymers may contain minor proportions of randomly distributed units in addition to the repeating units described above, these additional units containing reactive sites enabling the properties of the copolymers to be modified by crosslinking and/or curing.The copolymers are elastomeric even in the absence of low molecular weight polyphosphazene oils. The copolymers are curable by a variety of curing agents such as sulfur and peroxides, and can also be cured by radiation and ultraviolet light. The copolymers may be utilized in various applications such as foams and coatings, and are particularly suited for use in wire coating formulations.

Abstract translation: 制备具有由下式表示的无规重复单元的聚（芳氧基磷腈）共聚物：其中R和R 1可以相同或不同，并且选自具有以下结构的一价芳基和取代的芳基：其中X是选自烷基，烷氧基，芳基，芳氧基，氨基和在苯基上的任何空间上允许的位置上取代的卤素的取代基; 并且其中以P-Cl键形式存在的Cl的量为基于共聚物总重量的约0.4重量％至约10重量％。 除了上述重复单元之外，共聚物可以含有少量的随机分布的单元，这些含有能够通过交联和/或固化来改性共聚物性质的反应性位点的这些附加单元。 即使在不存在低分子量聚磷腈油的情况下，共聚物也是弹性体。 共聚物可通过各种固化剂如硫和过氧化物固化，并且还可以通过辐射和紫外光固化。 共聚物可以用于各种应用中，例如泡沫和涂料，并且特别适用于丝线涂布配方。

公开(公告)号：US4935467A

公开(公告)日：1990-06-19

申请号：US166954

申请日：1988-03-11

Applicant: Tai C. Cheng ,  Bruce A. Kaduk ,  Ashok K. Mehan ,  David D. Taft ,  Carl J. Weber ,  Steven C. Zingheim

Inventor： Tai C. Cheng ,  Bruce A. Kaduk ,  Ashok K. Mehan ,  David D. Taft ,  Carl J. Weber ,  Steven C. Zingheim

IPC: C08L23/08 ,  C08L27/16 ,  C08L27/18 ,  C08L53/00 ,  H01B1/20 ,  H01B1/22 ,  H01B1/24

CPC classification number: H01B1/24 ,  C08L23/08 ,  C08L27/16 ,  C08L27/18 ,  C08L53/00 ,  H01B1/20 ,  H01B1/22 ,  Y10T428/294

Abstract: Novel compositions comprise a blend of(A) a thermoplastic polymer selected from copolymers of ethylene and tetrafluoroethylene, and thermoplastic vinylidene fluoride polymers; and(B) a thermoplastic elastomer having (i) at least one elastomeric segment comprising (a) vinylidene fluoride, hexa- or pentafluoropropylene, and tetrafluoroethylene repeating units in a mole ratio of 45-90:5-50:0-35 or (b) perfluoro(alkyl vinyl ether), tetrafluoroethylene and vinylidene fluoride repeating units in a mole ratio of 15-75:0-85:0-85; and (ii) at least one nonelastomeric segment selected from segments comprising ethylene and tetrafluoroethylene repeating units in a mole ratio of 40-60:60-40, and segments comprising vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene repeating units in a mole ratio of 0-100:0-50:0-100,with the proviso that if the thermoplastic polymer is a vinylidene fluoride polymer, the blend is crosslinked.

Abstract translation: 新型组合物包含（A）选自乙烯和四氟乙烯的共聚物的热塑性聚合物和热塑性偏二氟乙烯聚合物的共混物; 和（B）热塑性弹性体，其具有（i）至少一种弹性体链段，其包含（a）偏二氟乙烯，六氟丙烯和五氟丙烯，和四氟乙烯重复单元，其摩尔比为45-90：5-50：0-35或（ b）摩尔比为15-75:0-85:0-85的全氟（烷基乙烯基醚），四氟乙烯和偏二氟乙烯重复单元; 和（ii）选自摩尔比为40-60:60-40的乙烯和四氟乙烯重复单元的段的至少一个非弹性链段，以及摩尔比为0-100的偏二氟乙烯，六氟丙烯和四氟乙烯重复单元的链段 ：0-50：0-100，条件是如果热塑性聚合物是偏二氟乙烯聚合物，则共混物是交联的。