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公开(公告)号：US5434004A
公开(公告)日：1995-07-18
申请号：US338791
申请日：1994-11-08
CPC分类号： B32B27/06 , Y10S428/913 , Y10T428/2969 , Y10T428/31504 , Y10T428/31993 , Y10T442/3854
摘要： A laminate comprising a thermoplastic polymer essentially consisting of polylactic acid, a copolymer of lactic acid and hydroxycarboxylic acid or a mixture of polylactic acid with a copolymer of lactic acid and hydroxycarboxylic acid, and a regenerated cellulose film, paper, leather, cloth, or fiber. The laminate undergoes degradability in the natural environment, is excellent in transparency, gloss and moisture-proofness, has high strength and can be used for various packaging materials.
摘要翻译： 包含基本由聚乳酸，乳酸和羟基羧酸的共聚物或聚乳酸与乳酸和羟基羧酸的共聚物的混合物的热塑性聚合物和再生纤维素膜，纸，皮革，布或纤维组成的层压体 。 层压体在自然环境中经历降解性，透明性，光泽和防湿性优异，强度高，可用于各种包装材料。
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公开(公告)号：US5444107A
公开(公告)日：1995-08-22
申请号：US917351
申请日：1992-07-23
CPC分类号： C08L3/00 , C08L3/04 , C08L67/04 , C08L2201/06
摘要： A degradable polymer composition essentially consisting of a mixture of a thermoplastic polymer composition primarily comprising polylactic acid or lactic acid-hydroxycarboxylic acid copolymer and one or more substance selected from starch and modified starch, and is a degradable polymer which does not cause problems such as environmental pollution and can be used for films, filaments and packaging materials, food packaging materials in particular.
摘要翻译： 一种可降解聚合物组合物，其主要由主要包含聚乳酸或乳酸 - 羟基羧酸共聚物的热塑性聚合物组合物和选自淀粉和改性淀粉的一种或多种物质的混合物组成，并且是不会引起诸如环境的问题的可降解聚合物 污染，可用于薄膜，细丝和包装材料，特别是食品包装材料。
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公开(公告)号：US6090910A
公开(公告)日：2000-07-18
申请号：US984538
申请日：1997-12-03
申请人： Hosei Shinoda , Masanobu Ajioka
发明人： Hosei Shinoda , Masanobu Ajioka
摘要： A degradable copolymer filament comprising an internal structure having the following separate phases: (a) a matrix phase comprised as a primary component of a polymer segment which exhibits a tensile Young's modulus of 2 GPa or less and a strength retention of 50% or more after two weeks in water at 37.degree. C., pH 7.3, and (b) a micro-dispersed phase comprised as a primary component of a polymer segment which exhibits a tensile strength of 200 MPa or more and a strength reduction greater than the matrix phase in water at 37.degree. C., pH 7.3. The weight ratio of each component in the matrix phase and dispersed phase is 50:50 to 95:5, respectively, and the dispersed phase a needle structure oriented by stretching in the fiber direction. A degradable monofilament having an excellent mechanical strength and flexibility, moderate hydrolyzability, high ligature stability and being suitable as a material of surgical absorbable suture can be obtained. A preparation process is also provided.
摘要翻译： 一种可降解共聚物长丝，其包含具有以下分离相的内部结构：（a）基质相，其包含作为聚合物链段的主要组分，其显示出2GPa或更小的拉伸杨氏模量和50％以上的强度保持率 在37℃，pH7.3的水中两周，和（b）包含作为聚合物链段的主要组分的微分散相，其表现出200MPa或更大的拉伸强度，并且强度降低大于基体相 在37℃，pH 7.3的水中。 基体相和分散相中各成分的重量比分别为50:50〜95:5，分散相为沿纤维方向拉伸取向的针状结构。 可以获得具有优异的机械强度和柔韧性，适度的水解性，高韧带稳定性并且适合作为手术可吸收缝合材料的可降解单丝。 还提供了一个准备过程。
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公开(公告)号：US5747637A
公开(公告)日：1998-05-05
申请号：US697571
申请日：1996-08-28
申请人： Hosei Shinoda , Masanobu Ajioka , Kimitaka Chida
发明人： Hosei Shinoda , Masanobu Ajioka , Kimitaka Chida
摘要： A bioabsorbable, ternary block copolymer consisting essentially of (A) polylactic acid segment, (B) poly(.epsilon.-caprolactone) segment and (C) polyglycolic acid segment, preparation process of the block copolymer, and medical molded articles prepared from said block copolymer. The bioabsorbable block copolymer is excellent in mechanical strength and flexibility and has moderate hydrolyzability and is especially utilized for a surgical monofilament suture.
摘要翻译： 主要由（A）聚乳酸链段，（B）聚（ε-己内酯）链段和（C）聚乙醇酸链段组成的生物可吸收的三元嵌段共聚物，嵌段共聚物的制备方法和由所述嵌段共聚物 。 生物可吸收嵌段共聚物的机械强度和柔韧性优异，具有适度的水解性，特别适用于手术单丝缝合。
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公开(公告)号：US5247013A
公开(公告)日：1993-09-21
申请号：US902794
申请日：1992-06-26
申请人： Hosei Shinoda , Masami Ohtaguro , Shigeru Iimuro
发明人： Hosei Shinoda , Masami Ohtaguro , Shigeru Iimuro
IPC分类号： C08G63/06 , C08G63/664
CPC分类号： C08G63/664 , C08G63/06
摘要： A biocompatible polyester which has improved hydrolyzability obtained by bonding saccharide to the structure of a polymer consisting of a glycolic acid unit and/or a lactic acid unit, and a process for Preparing the biocompatible polyester are disclosed.
摘要翻译： 公开了具有改善的水解性的生物相容性聚酯，其通过将糖键合到由乙醇酸单元和/或乳酸单元组成的聚合物的结构上而获得，并且制备生物相容性聚酯的方法。
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公开(公告)号：US5223546A
公开(公告)日：1993-06-29
申请号：US870336
申请日：1992-04-17
申请人： Kenji Morita , Kohichi Uchiki , Hosei Shinoda
发明人： Kenji Morita , Kohichi Uchiki , Hosei Shinoda
CPC分类号： B29C44/5672 , B29C44/5627 , C08J9/06 , C08J9/103 , C08J9/12 , C08J2367/04
摘要： A degradable polymer network obtained by adding from 0.2 to 10 parts by weight of a foaming agent to 100 parts by weight of a polylactic acid-base resin composition comprising from 80 to 100% by weight of polylactic acid or a lactic acid-hydroxycarboxylic acid copolymer and from 0 to 20% by weight of a plasticizer, conducting melt-foaming extrusion of resulting mixture, and opening the foam cells in the extrudate. The high polymer network is characterized in suitable flexibility and hydrolyzability and thus useful as a material for absorbing oils and body fluids, screens for sunlight, heat-insulating materials, filter media and packaging materials; and does not accumulate as industrial wastes because of hydrolyzability in the natural environment, even though abandoned after use.
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公开(公告)号：US4859763A
公开(公告)日：1989-08-22
申请号：US216371
申请日：1988-07-08
CPC分类号： A61K9/204 , C08G63/08 , C08G63/823
摘要： A process for copolymerizing lactide and glycolide by using a specific amount of stannous octoate as a catalyst in the presence of a polymerization regulator at temperature of 200.degree.-230.degree. C. to prepare dl-lactic acid-glycolic acid-copolymers which contain 50-60 mol % of a dl-lactic acid unit and 40-50 mol % of a glycolic acid unit and have inherent viscosity of 0.4-0.6 in chloroform.
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公开(公告)号：US06372844B1
公开(公告)日：2002-04-16
申请号：US09536677
申请日：2000-03-28
申请人： Hosei Shinoda , Yukiko Asou , Hiroaki Tamatani
发明人： Hosei Shinoda , Yukiko Asou , Hiroaki Tamatani
IPC分类号： C08L5108
CPC分类号： C08L67/02 , C08L69/00 , C08L101/00 , C08L2666/20
摘要： There are here disclosed a resin composition comprising a block or a graft copolymer (A) having a polyamino acid as a hydrophilic segment (a-1), and a degradable polymer as a hydrophobic segment (a-2), and a resin (B); and a method of accelerating the hydrolysis of a resin and inhibiting the heat deterioration thereof by mixing this copolymer (A) with the resin (B).
摘要翻译： 这里公开了包含具有聚氨基酸作为亲水性链段（a-1）的嵌段或接枝共聚物（A）和作为疏水链段（a-2）的可降解聚合物和树脂（B）的树脂组合物 ）; 和通过将该共聚物（A）与树脂（B）混合来加速树脂的水解并抑制其热劣化的方法。
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9.再颁专利Nylon composition having increased hydroylzability and method for increasing hydrolyzability of nylon 失效尼龙组合物具有增加的水解性和增加尼龙的水解性的方法
公开(公告)号：USRE34984E
公开(公告)日：1995-06-27
申请号：US224301
申请日：1994-04-07
申请人： Toshio Kitao , Yoshiharu Kimura , Hideki Yamane , Hiroki Nakata , Hosei Shinoda
发明人： Toshio Kitao , Yoshiharu Kimura , Hideki Yamane , Hiroki Nakata , Hosei Shinoda
CPC分类号： A61L31/041 , C08L77/00 , Y10S525/937
摘要： The present invention provides a nylon composition having increased hydrolyzability which is obtained by physically mixing 100 parts by weight of a nylon with 1 to 50 parts by weight of at least one polymer selected from the group consisting of polylactic acid, polyglycolic acid and a copolymer containing 50 mol % or more of a lactic acid unit or a glycolic acid unit as a repeating unit in its chain; and a method for increasing the hydrolyzability of a nylon by preparing such a composition. High hydrolyzability can be imparted to the nylon inherently having extremely low hydrolyzability without impairing its original mechanical strength. Therefore, various molded articles made from the nylon can be hydrolyzed under natural circumstances, and thus the wastes are not stored.
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公开(公告)号：US5405887A
公开(公告)日：1995-04-11
申请号：US249994
申请日：1994-05-27
申请人： Kenji Morita , Kohichi Uchiki , Hosei Shinoda
发明人： Kenji Morita , Kohichi Uchiki , Hosei Shinoda
CPC分类号： C08J5/18 , C08J2367/04
摘要： A breathable, hydrolyzable, porous film having long-term stability in mechanical properties which is obtained by the process comprising adding from 40 to 250 parts by weight of a finely-powdered filler having an average particle size of from 0.3 to 4 .mu.m to 100 parts by weight of a polylactic acid-based resin composition comprising from 80 to 95% by weight of polylactic acid or a lactic acid-hydroxycarboxylic acid copolymer and from 5 to 20% by weight of a plasticizer comprising a citric acid ester, melting and film-forming the resultant mixture, and successively stretching the thus-obtained film 1.1 times or more at least in the direction of the axis; and which is consequently useful as a material for leakproof films of sanitary materials such as a paper diaper and packaging materials, and does not accumulate as wastes because of hydrolyzability in the natural environment in the case of being abandoned after use.
摘要翻译： 一种透气的，可水解的多孔膜，其具有机械性能的长期稳定性，该膜通过该方法获得，该方法包括将40至250重量份的平均粒度为0.3至4μm至100的细粉末填料 重量份的包含80至95重量％的聚乳酸或乳酸 - 羟基羧酸共聚物的聚乳酸类树脂组合物和5至20重量％的包含柠檬酸酯的增塑剂，熔融和膜 形成所得混合物，并且至少沿轴线方向依次将如此得到的膜拉伸1.1倍以上; 因此可用作纸尿布和包装材料等卫生材料的防漏膜的材料，并且由于在使用后放弃的情况下由于自然环境中的水解性而不会作为废物积聚。
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