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    Biodegradable aliphatic polyester particles and production process thereof
    1.
    发明授权
    Biodegradable aliphatic polyester particles and production process thereof 有权
    生物降解脂肪族聚酯颗粒及其制备方法

    公开(公告)号：US08865304B2

    公开(公告)日：2014-10-21

    申请号：US13452119

    申请日：2012-04-20

    申请人： Kotaku Saigusa ,  Masahiro Yamazaki ,  Shunsuke Abe ,  Nanako Kuruhara ,  Hiroyuki Sato

    发明人： Kotaku Saigusa ,  Masahiro Yamazaki ,  Shunsuke Abe ,  Nanako Kuruhara ,  Hiroyuki Sato

    IPC分类号： C08G63/06 ,  C08G63/88 ,  C08G63/08

    CPC分类号： C08G63/08 ,  C08G63/88 ,  Y10T428/2982 ,  Y10T428/2991

    摘要： Biodegradable aliphatic polyester particles have: (A) an average particle diameter of 10 to 500 μm, and (B) a quantity of heat of low-temperature crystallization calculated as an exotherm attending on crystallization, detected in the course of heating by DSC, of at least 1 J/g, and preferably: (C) a quantity of heat of crystal melting calculated as an endotherm attending on melting of a crystal, detected in the course of the heating, of less than 100 J/g, and (D) a difference between the quantity of heat of crystal melting and the quantity of heat of low-temperature crystallization of less than 90 J/g. A process for producing the particles comprises grinding a particular biodegradable aliphatic polyester having a weight average molecular weight of at least 50,000 at not lower than 0° C. and lower than the glass transition temperature of the polyester while applying high shearing force.

    摘要翻译： 生物降解性脂肪族聚酯粒子具有：（A）平均粒径为10〜500μm，（B）以DSC为加热过程中检测到的结晶化时的热分解热量， 至少为1J / g，优选为：（C）在加热过程中检测到的以熔融结晶为基准的吸热热量计算为小于100J / g的结晶熔融量，（D ）结晶熔融热量与低温结晶热量之差小于90J / g。 制造颗粒的方法包括在施加高剪切力的同时，在不低于0℃并且低于聚酯的玻璃化转变温度的情况下研磨重均分子量为至少50,000的特定的可生物降解的脂族聚酯。

    BIODEGRADABLE ALIPHATIC POLYESTER PARTICLES AND PRODUCTION PROCESS THEREOF
    2.
    发明申请
    BIODEGRADABLE ALIPHATIC POLYESTER PARTICLES AND PRODUCTION PROCESS THEREOF 有权
    可生物降解的生物聚合物颗粒及其生产工艺

    公开(公告)号：US20120270048A1

    公开(公告)日：2012-10-25

    申请号：US13452119

    申请日：2012-04-20

    申请人： Kotaku Saigusa ,  Masahiro Yamazaki ,  Shunsuke Abe ,  Nanako Kuruhara ,  Hiroyuki Sato

    发明人： Kotaku Saigusa ,  Masahiro Yamazaki ,  Shunsuke Abe ,  Nanako Kuruhara ,  Hiroyuki Sato

    IPC分类号： C08G63/06 ,  C08G63/88

    CPC分类号： C08G63/08 ,  C08G63/88 ,  Y10T428/2982 ,  Y10T428/2991

    摘要： Biodegradable aliphatic polyester particles have: (A) an average particle diameter of 10 to 500 μm, and (B) a quantity of heat of low-temperature crystallization calculated as an exotherm attending on crystallization, detected in the course of heating by DSC, of at least 1 J/g, and preferably: (C) a quantity of heat of crystal melting calculated as an endotherm attending on melting of a crystal, detected in the course of the heating, of less than 100 J/g, and (D) a difference between the quantity of heat of crystal melting and the quantity of heat of low-temperature crystallization of less than 90 J/g. A process for producing the particles, comprises grinding a particular biodegradable aliphatic polyester having a weight average molecular weight of at least 50,000 at not lower than 0° C. and lower than the glass transition temperature of the polyester while applying high shearing force.

    摘要翻译： 生物降解性脂肪族聚酯粒子具有：（A）平均粒径为10〜500μm，（B）以DSC为加热过程中检测到的结晶化时的热分解热量， 至少为1J / g，优选为：（C）在加热过程中检测到的以熔融结晶为基准的吸热热量计算为小于100J / g的结晶熔融量，（D ）结晶熔融热量与低温结晶热量之差小于90J / g。 一种制造颗粒的方法，包括在施加高剪切力的同时，将不低于0℃的重均分子量至少为50,000的特定的可生物降解的脂肪族聚酯和低于聚酯的玻璃化转变温度进行研磨。

    Biodegradable Aliphatic Polyester Particles and Production Process Thereof
    3.
    发明申请
    Biodegradable Aliphatic Polyester Particles and Production Process Thereof 审中-公开
    可生物降解的脂肪族聚酯颗粒及其制备方法

    公开(公告)号：US20140017495A1

    公开(公告)日：2014-01-16

    申请号：US14006982

    申请日：2012-03-21

    申请人： Masahiro Yamazaki ,  Kotaku Saigusa ,  Shunsuke Abe ,  Nanako Saigusa ,  Hiroyuki Sato

    发明人： Masahiro Yamazaki ,  Kotaku Saigusa ,  Shunsuke Abe ,  Nanako Saigusa ,  Hiroyuki Sato

    IPC分类号： C08G63/88 ,  C08G63/06

    CPC分类号： C08G63/88 ,  B29B9/10 ,  B29K2995/006 ,  C08G63/06 ,  C08J3/12 ,  C08J2300/16 ,  C08J2367/04 ,  C08L101/16 ,  Y10T428/2982

    摘要： The invention provides biodegradable aliphatic polyester particles having the following physical properties: (A) the average particle diameter thereof is 5 to 500 μm; and (B) the fracture stress of a columnar tablet obtained by molding the particles in a cylindrical mold by applying a load of 4 kgf/cm2 for 1 hour at a temperature of 40° C. is at most 500 gf/cm2, and preferably also having the following property: (C) the fracture stress of a columnar tablet obtained by molding the particles in a cylindrical mold by applying a load of 4 kgf/cm2 for 1 hour at a temperature of [the glass transition temperature (Tg) of a biodegradable aliphatic polyester +10° C.] is at most 2,000 gf/cm2, a process for producing the biodegradable aliphatic polyester particles, which comprises treating a particulate biodegradable aliphatic polyester obtained by grinding at a temperature lower than the Tg at a temperature not lower than [the crystallization temperature (Tc1) upon heating of the biodegradable aliphatic polyester−40° C], and the biodegradable aliphatic polyester particles obtained by the production process.

    摘要翻译： 本发明提供具有以下物理性质的生物可降解脂族聚酯颗粒：（A）其平均粒径为5至500μm; 和（B）通过在40℃的温度下施加4kgf / cm 2的负荷1小时将通过在圆筒形模具中成型颗粒而获得的柱状片的断裂应力为500gf / cm 2以下，优选为 还具有以下特性：（C）通过在[玻璃化转变温度（Tg）为[玻璃化转变温度（Tg）]的温度下，通过在4kgf / cm 2的负荷下进行1小时的模塑而将颗粒成形为圆柱形模具而获得的柱状片的断裂应力 生物降解性脂肪族聚酯+ 10℃]为2000gf / cm 2以下，生物降解性脂肪族聚酯粒子的制造方法，其特征在于，在不低于Tg的温度下，在不低于Tg的温度下，研磨得到的颗粒状生物降解性脂肪族聚酯 低于[生物降解性脂肪族聚酯-40℃加热时的结晶温度（Tc1）]，以及通过该制造方法得到的生物降解性脂肪族聚酯粒子。

    POLYGLYCOLIC ACID-BASED FIBERS AND METHOD FOR PRODUCING SAME
    8.
    发明申请
    POLYGLYCOLIC ACID-BASED FIBERS AND METHOD FOR PRODUCING SAME 审中-公开
    基于聚甘油酸的纤维及其生产方法

    公开(公告)号：US20120130024A1

    公开(公告)日：2012-05-24

    申请号：US13388762

    申请日：2010-07-14

    申请人： Hiroyuki Sato ,  Masahiro Yamazaki ,  Ryo Kato ,  Kotaku Saigusa

    发明人： Hiroyuki Sato ,  Masahiro Yamazaki ,  Ryo Kato ,  Kotaku Saigusa

    IPC分类号： D01F6/92 ,  C08L67/04 ,  B29C47/00

    CPC分类号： D01F6/625 ,  D01F6/92 ,  D02J1/228

    摘要： A method for producing a polyglycolic acid-based fiber, includes a spinning process of obtaining undrawn yarns by melt spinning a polyglycolic acid-based resin composition, which comprises a polyglycolic acid resin and a polylactic acid resin having a weight average molecular weight of 10×104 to 30×104 in a mass ratio of the polyglycolic acid resin to the polylactic acid resin of 70/30 to 99/1. The method also includes a keeping process of keeping the undrawn yarns and a drawing process of obtaining drawn yarns by drawing the kept undrawn yarns.

    摘要翻译： 聚乙醇酸系纤维的制造方法包括使聚乙醇酸系树脂组合物熔融纺丝得到未拉伸丝的纺丝方法，所述聚乙醇酸系树脂组合物含有聚乙醇酸树脂和重均分子量为10×10的聚乳酸树脂 聚乙醇酸树脂与聚乳酸树脂的质量比为70〜30〜99/1的比例为104〜30×104。 该方法还包括保持未拉伸纱线的保持过程和通过拉伸保持的未拉伸纱线来获得拉伸纱线的拉伸过程。

    OIL DRILLING AUXILIARY DISPERSION
    9.
    发明申请
    OIL DRILLING AUXILIARY DISPERSION 审中-公开
    油钻辅助分散

    公开(公告)号：US20130252854A1

    公开(公告)日：2013-09-26

    申请号：US13878606

    申请日：2011-10-14

    申请人： Shunsuke Abe ,  Nanako Saigusa ,  Masahiro Yamazaki ,  Hiroyuki Sato

    发明人： Shunsuke Abe ,  Nanako Saigusa ,  Masahiro Yamazaki ,  Hiroyuki Sato

    IPC分类号： C09K8/12

    CPC分类号： C09K8/588 ,  C09K8/12 ,  C09K8/5086 ,  C09K8/512 ,  C09K8/70 ,  C09K8/885 ,  C09K2208/08 ,  C09K2208/18

    摘要： A dispersion liquid for supporting oil drilling, including: an aqueous medium and a particulate solid polyglycolic acid resin dispersed in the aqueous medium; wherein the particulate polyglycolic acid resin has a weight-average molecular weight of at least 70,000 and at most 500,000, and exhibits weight retentivities in water at 80° C. of at least 85% after 12 hours, at most 80% after 72 hours, and at most 45% after 168 hours. The particulate solid polyglycolic acid resin included in the above-mentioned dispersion liquid for supporting oil drilling, functions as a fluidity control material exhibiting ideal degradation characteristics in the drilling operation for expansion of oil production capacity, demanded for suppressing the liquid permeability in the early stage and recovery of the liquid permeability after completion of the operation of the formation around the oil well.

    摘要翻译： 一种用于支撑石油钻井的分散液，包括：水性介质和分散在水性介质中的颗粒状固体聚乙醇酸树脂; 其特征在于，所述粒状聚乙醇酸树脂的重均分子量为70,000以上且500,000以下，12小时后，80℃下的水分重量保持率为85％以上，72小时后为80％以上， 168小时后最多45％。 上述用于支撑油钻井的分散液中包含的颗粒状固体聚乙醇酸树脂用作在用于膨胀油生产能力的钻井操作中表现出理想的降解特性的流动性控制材料，需要在早期抑制液体渗透性 并且在油井周围操作完成后恢复液体渗透性。