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29 条记录 (耗时 0.022 秒)

    Polyglycolic acid sheet and production process thereof
    1.
    发明授权
    Polyglycolic acid sheet and production process thereof 失效
    聚乙醇酸片及其制备方法

    公开(公告)号：US5908917A

    公开(公告)日：1999-06-01

    申请号：US844409

    申请日：1997-04-18

    申请人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    发明人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    IPC分类号： B29C47/00 ,  B29C47/88 ,  B29K67/00 ,  B29L7/00 ,  C08G63/06 ,  C08J5/18 ,  C08L101/16 ,  C08G63/08

    CPC分类号： C08J5/18 ,  C08G63/06 ,  C08J2367/04

    摘要： The invention provides a polyglycolic acid sheet obtainable by melt-extruding a thermoplastic resin material into a sheet in a temperature range of from the melting point, Tm of the polymer to 255.degree. C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1): ##STR1## and the following physical properties: (a) the melt viscosity, .eta.* �as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec! being 500-100,000 Pa.s;(b) the melting point, Tm being at least 150.degree. C.;(c) the melt enthalpy, .DELTA.Hm being at least 20 J/g; and(d) the density being at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form, and the sheet has tensile strength of at least 60 MPa, and a production process thereof.

    摘要翻译： 本发明提供一种聚乙醇酸片，其可以通过将熔融挤出热塑性树脂材料在聚合物的熔点Tm至255℃的温度范围内熔融挤出而得到，其中热塑性树脂材料包含具有重复的聚乙醇酸 由下式（1）表示的单元和以下物理性质：（a）熔融粘度ηa[在（熔点，聚合物的Tm + 20℃）和剪切温度 100 /秒]为500-100,000 Pa.s; （b）熔点Tm为至少150℃。 （c）熔体焓DELTA Hm为至少20J / g; 和（d）以非取向结晶形式测量的密度为至少1.50g / cm 3，并且该片材具有至少60MPa的拉伸强度及其制造方法。

    Injection-molded product of polyglycolic acid and production process thereof
    2.
    发明授权
    Injection-molded product of polyglycolic acid and production process thereof 失效
    聚乙醇酸注射成型品及其制备方法

    公开(公告)号：US6046251A

    公开(公告)日：2000-04-04

    申请号：US844361

    申请日：1997-04-18

    申请人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    发明人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    IPC分类号： C08J5/00 ,  B29C45/00 ,  B29K67/00 ,  B29L22/00 ,  C08G63/08 ,  C08L67/04 ,  C08L101/16 ,  A61L31/00

    CPC分类号： C08G63/08 ,  B29C45/0001 ,  C08L67/04

    摘要： An injection-molded product is obtained by injection molding a thermoplastic resin material. The thermoplastic resin material comprises a polyglycolic acid homopolymer or copolymer having a repeating unit represented by the following formula (1): ##STR1## in a proportion not lower than 70 wt. % and a repeating unit derived from at least one cyclic comonomer selected from the group consisting of ethylene oxalate and lactide in a proportion not higher than 30 wt. %, and having the following physical properties: (a) a melt viscosity, n*, measured at a temperature of the melting point, Tm, of the polyglycolic acid homopolymer or copolymer +20.degree. C. and a shear rate of 1,000/sec, of 30-10,000 Pa.multidot.s; (b) a melting point, Tm, of at least 150.degree. C.; (c) a melt enthalpy, .DELTA.Hm, of at least 20 J/g; and (d) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form. The injection-molded product has Izod impact strength, unnotched, 25.degree. C., of at least 20 kJ/m.sup.2, tensile strength of a least 60 MPa, tensile elongation of at least 5%, flexural strength of at least 100 MPa, and flexural modulus of at least 5 GPa, and is obtained by injection molding at an injection temperature ranging from the melting point, Tm, of the homopolymer or copolymer to 255.degree. C.

    摘要翻译： 通过注射成型热塑性树脂材料获得注塑产品。 热塑性树脂材料包括具有由下式（1）表示的重复单元的聚乙醇酸均聚物或共聚物：比例不低于70wt。 ％的重复单元和来自选自草酸亚乙酯和丙交酯的至少一种环状共聚单体的重复单元，其比例不高于30wt。 ％，具有以下物理性质：（a）在聚乙醇酸均聚物或共聚物+ 20℃的熔点温度Tm下测定的熔融粘度n *，剪切速率为1000 /秒 ，30-10,000元; （b）熔点Tm为至少150℃。 （c）至少20J / g的熔体焓DELTA Hm; 和（d）以非取向的结晶形式测量的至少1.50g / cm 3的密度。 注塑产品具有悬臂梁式冲击强度，25℃，至少20kJ / m 2，拉伸强度至少为60MPa，拉伸伸长率至少为5％，弯曲强度至少为100MPa， 弯曲模量为至少5GPa，并且通过在从均聚物或共聚物的熔点Tm到255℃的注射温度下注射成型获得。

    Controlled release formulations using intelligent polymers
    7.
    发明申请
    Controlled release formulations using intelligent polymers 审中-公开
    使用智能聚合物的控制释放配方

    公开(公告)号：US20050214368A1

    公开(公告)日：2005-09-29

    申请号：US11109067

    申请日：2005-04-19

    申请人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    发明人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    IPC分类号： A61K9/14 ,  A61K9/20 ,  A61K9/22 ,  A61K9/28 ,  A61K31/716

    CPC分类号： A61K9/2846 ,  A61K9/2054 ,  A61K9/2077 ,  A61K31/716

    摘要： A controlled release pharmaceutical composition comprises (a) at least one pharmaceutically active substance having a water contact angle (θ) such that cos θ is between +0.9848 and −0.9848, (b) a first intelligent polymer component; and (c) a second intelligent polymer component having opposite wettability characteristics to the first intelligent polymer component, the first and second polymer components being present in a ratio in the range of about 1:100 to about 100:1 by weight. The polymer components are effective for controlled release of the pharmaceutically active substance from the composition.

    摘要翻译： 控释药物组合物包含（a）至少一种具有水接触角（θ）的药物活性物质，使得cosθ在+ 0.9848和-0.9848之间，（b）第一智能聚合物组分; 和（c）具有与第一智能聚合物组分相反润湿特性的第二智能聚合物组分，第一和第二聚合物组分以约1:100至约100:1重量比的比例存在。 聚合物组分对于从组合物中控制释放药物活性物质是有效的。

    Production process for injection-molded product of polyglycolic acid
    8.
    发明授权
    Production process for injection-molded product of polyglycolic acid 有权
    聚乙醇酸注射成型产品的生产工艺

    公开(公告)号：US06183679B2

    公开(公告)日：2001-02-06

    申请号：US09504604

    申请日：2000-02-15

    申请人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    发明人： Yukichika Kawakami ,  Nobuo Sato ,  Mitsuru Hoshino ,  Toshitaka Kouyama ,  Zenya Shiiki

    IPC分类号： B29C4500

    CPC分类号： C08G63/08 ,  B29C45/0001 ,  C08L67/04

    摘要： The invention provides an injection-molded product of polyglycolic acid obtainable by molding a thermoplastic resin material at an injection temperature ranging from the melting point, Tm of the polymer to 255° C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1): and the following physical properties: (a) the melt viscosity, &eegr;* [as measured at a temperature of (the melting point, Tm of the polymer+20° C.) and a shear rate of 1,000/sec] being 30-10,000 Pa·s; (b) the melting point, Tm being at least 150° C.; (c) the melt enthalpy, &Dgr;Hm being at least 20 J/g; and (d) the density being at least 1.50 g/cm3 as measured in an unoriented, crystallized form, and a production process thereof.

    摘要翻译： 本发明提供一种聚乙醇酸的注射成型品，其通过在从聚合物的熔点Tm至255℃的注射温度下模制热塑性树脂材料而得到，其中热塑性树脂材料包含具有重复单元的聚乙醇酸 由下式（1）表示：和（a）熔体粘度eta * [在（熔点，聚合物的Tm + 20℃）的温度和剪切速率 1,000 /秒]为30-10,000Pa.s;（b）熔点Tm为至少150℃;（c）熔体焓DELTAHm为至少20J / g; 和（d）以非取向的结晶形式测量的密度为至少1.50g / cm 3，及其制造方法。

    High-quality polyarylene-thioether fibers and method for production thereof
    10.
    发明授权
    High-quality polyarylene-thioether fibers and method for production thereof 失效
    高品质聚亚芳基 - 硫醚纤维及其制备方法

    公开(公告)号：US4816335A

    公开(公告)日：1989-03-28

    申请号：US842842

    申请日：1986-03-24

    申请人： Toshitaka Kouyama ,  Harunobu Egawa ,  Yo Iizuka ,  Zenya Shiiki

    发明人： Toshitaka Kouyama ,  Harunobu Egawa ,  Yo Iizuka ,  Zenya Shiiki

    IPC分类号： D01D5/12 ,  D01F6/76 ,  D02G3/00

    CPC分类号： D01F6/765 ,  Y10T428/2913

    摘要： High-quality polyarylene-thioether fibers are provided, which simultaneously satisfy the following conditions:(a) the polyarylene-thioether is a linear polyarylene-thioether having a melt viscosity of 5,300 to 20,000 poise (at 310.degree. C. and a shear velocity of 200 second.sup.-1);(b) the fiber diameter is in the range of 1 to 50 microns;(c) the tensile strength is not less than 40 kg/sq.mm;(d) the tensile modulus of elasticity is not less than 500 kg/sq.mm; and(e) the tensile strength at 200.degree. C. is not less than 20 kg/sq.mm.The fibers are produced by continuously melt-spinning a linear polyarylene-thioether polymer having a melt viscosity of 5,300 to 20,000 poise (at 310.degree. C. and a shear velocity of 200 second.sup.-1), continuously stretching the spun filament, and continuously heat-setting the stretched filament for 0.02 to 100 seconds at a temperature of not lower than the melting point of the polymer minus 100.degree. C.

    摘要翻译： 提供了高质量的聚亚芳基 - 硫醚纤维，其同时满足以下条件：（a）聚亚芳基 - 硫醚是熔体粘度为5300至20,000泊（线性聚亚芳基 - 硫醚）（在310℃，剪切速度为 200秒-1）; （b）纤维直径在1至50微米的范围内; （c）拉伸强度不小于40kg / sq.mm; （d）拉伸弹性模量不小于500kg / sq.mm; 和（e）200℃下的拉伸强度不小于20kg / sq.mm。 纤维通过连续熔融纺丝熔融粘度为5300至20,000泊（在310℃和剪切速度为200秒-1）的线性聚亚芳基 - 硫醚聚合物，连续地拉伸纺丝丝，并连续加热 在不低于聚合物的熔点-100℃的温度下将拉伸的长丝固定0.02至100秒。