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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：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：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：US06417266B1
公开(公告)日：2002-07-09
申请号：US09786763
申请日：2001-03-09
申请人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Hiroshi Kimura , Shinji Ogawa , Yasushi Kotaki
发明人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Hiroshi Kimura , Shinji Ogawa , Yasushi Kotaki
IPC分类号： C08K541
摘要： A process for producing aliphatic polyester wherein a crystallized aliphatic polyester prepolymer formed from an aliphatic dihydric alcohol and an aliphatic dicarboxylic acid and having a weight-average molecular weight of 2,000 to 100,000 is caused to undergo solid-phase polymerization in the presence of a volatile catalyst to make an aliphatic polyester having a weight-average molecular weight of 50,000 to 1,000,000. This process is more efficient than any prior process calling for a complicated step for catalyst removal, since it enables the removal of the catalyst from the reaction system during and/or after solid-phase polymerization. The polyester is comparable in stability to any aliphatic polyester having any catalyst removed therefrom.
摘要翻译： 一种脂肪族聚酯的制造方法，其特征在于，在挥发性催化剂的存在下，使由脂肪族二元醇和脂肪族二羧酸形成的重均分子量为2,000〜100,000的结晶脂肪族聚酯预聚物进行固相聚合 得到重均分子量为50,000〜1,000,000的脂肪族聚酯。 该方法比任何先前的方法要求复杂的催化剂去除步骤更有效，因为其能够在固相聚合期间和/或之后从反应体系中除去催化剂。 聚酯与其中除去任何催化剂的任何脂族聚酯的稳定性相当。
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公开(公告)号：US6150438A
公开(公告)日：2000-11-21
申请号：US538240
申请日：2000-03-30
申请人： Nobuo Shiraishi , Masanobu Ajioka
发明人： Nobuo Shiraishi , Masanobu Ajioka
IPC分类号： B65D65/46 , C08B31/00 , C08H8/00 , C08J5/18 , C08L3/02 , C08L67/04 , C08L67/06 , C08L97/00 , C08L97/02 , C08L89/00 , C08K5/13
CPC分类号： C08H8/00 , B65D65/466 , C08B31/00 , C08J5/18 , C08L3/02 , C08L67/04 , C08L67/06 , C08L97/00 , C08L97/02 , C08J2303/02 , C08J2367/04 , C08J2397/02 , Y02W90/11 , Y02W90/13
摘要： The invention provides a composite resin composition comprising aliphatic polyester resin (component A) having aliphatic hydroxycarboxylic acid units, one or more biomass material (component B) selected from the group consisting of cellulose, lignocellulose and starch and unsaturated carboxylic acid or a derivative thereof (component C), wherein the composite resin composition comprises a component obtained by covalently bonding a portion or the whole of component A and component B through component C. On processing into various formed items, the composite resin composition of the invention exhibits excellent tensile strength and other physical properties and processability and simultaneously has good biodegradability, and enable biomass materials of low added value to apply to high added value uses in a large amount.
摘要翻译： 本发明提供一种复合树脂组合物，其包含具有脂族羟基羧酸单元的脂族聚酯树脂（组分A），一种或多种选自纤维素，木质纤维素和淀粉以及不饱和羧酸或其衍生物的生物质材料（组分B） 组分C），其中复合树脂组合物包含通过将组分A和组分B的一部分或全部通过组分C共价键合而获得的组分。在加工成各种成型体时，本发明的复合树脂组合物显示出优异的拉伸强度和 其他物理性能和加工性能，同时具有良好的生物降解性，使低附加值生物质材料大量应用于高附加值用途。
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公开(公告)号：US6136905A
公开(公告)日：2000-10-24
申请号：US996477
申请日：1997-12-22
摘要： A lactic acid polymer composition comprising formulating 100 parts by weight of a mixture consisting of 80-95% by weight of an L-lactic acid polymer having an L-lactic acid proportion of 75% or more and 5-20% by weight of a plasticizer selected from the group consisting of a polyhydric alcohol ester and a hydroxypolycarboxylic acid ester, 0.1-5 parts by weight of an anti-blocking agent having a SiO.sub.2 content of 90% or more and an average particle size of 7-50 nm, and 0.1-2 parts by weight of a slip agent; a molded product and film obtained from the composition; and a preparation process of the same are disclosed. The molded product and film are excellent in processability, transparency, flexibility, anti-blocking property and slip, and can be degraded into harmless water and carbon dioxide under natural environment, when abandoned.
摘要翻译： 一种乳酸聚合物组合物，其包含配制100重量份的由80-95重量％的L-乳酸比例为75％以上的L-乳酸聚合物和5-20重量％的由 选自多元醇酯和羟基多羧酸酯的增塑剂，0.1-5重量份SiO 2含量为90％以上，平均粒径为7-50nm的防粘连剂，以及 0.1-2重量份的滑爽剂; 由该组合物获得的成型品和膜; 并公开了其制备方法。 成型品和膜的加工性，透明性，柔软性，防粘连性和滑爽性优异，在被废弃时可以在自然环境下降解成无害的水和二氧化碳。
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公开(公告)号：US6111137A
公开(公告)日：2000-08-29
申请号：US986795
申请日：1997-12-08
申请人： Hiroshi Suizu , Masanobu Ajioka
发明人： Hiroshi Suizu , Masanobu Ajioka
IPC分类号： C07C51/487 , C08G63/06 , C07C51/42 , C07C59/08
CPC分类号： C08G63/06 , C07C51/487
摘要： A process for treating pyruvic acid and other impurities of lactic acid by reduction treatment of an aqueous lactic acid solution and for obtaining high quality lactic acid having a substantially no pyruvic acid content, high purity, excellent heat stability and improved smell. Further, a high molecular weight polylactic acid having low coloration and consistent quality can be prepared by dehydration polycondensation of lactic acid obtained by the reduction treatment.
摘要翻译： 通过乳酸水溶液的还原处理和用于获得基本上不含丙酮酸含量，高纯度，优异的热稳定性和改善的气味的高品质乳酸来处理丙烯酸和其他乳酸杂质的方法。 此外，通过还原处理得到的乳酸的脱水缩聚可以制备着色低，质量一致的高分子量聚乳酸。
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公开(公告)号：US5525682A
公开(公告)日：1996-06-11
申请号：US473205
申请日：1995-06-07
IPC分类号： C08G69/10 , C08G69/48 , C08G73/10 , C08F283/04
CPC分类号： C08G69/10 , C08G69/48 , C08G73/1092
摘要： A process for preparing a novel superabsorbent polymer which is readily hydrolyzed and conform to environment by reacting a polysuccinimide with a diamine in an aqueous solution or an organic solvent to partially crosslink the polysuccinimide, and subsequently or concurrently hydrolyzing the remaining imide ring with an alkali while controlling the pH; and the superabsorbent polymer thus obtained.
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公开(公告)号：US4803065A
公开(公告)日：1989-02-07
申请号：US64699
申请日：1987-06-22
CPC分类号： B01J23/26 , C01B7/04 , Y02P20/228
摘要： An improved process is provided for the production of chlorine. In a fluidized-bed reactor having a specific equivalent diameter and made of a material with a particular iron content, hydrogen chloride and oxygen are reacted in particular gas volumes and at specific molar ratio, superficial velocity, temperature and pressure in the presence of a catalyst composed principally of a chromium oxide and having a specific particle size distribution. The catalyst is filled in a specific amount in terms of catalyst layer height at rest. The catalyst can retain its high activity.
摘要翻译： 提供了一种用于生产氯的改进方法。 在具有特定当量直径并由具有特定铁含量的材料制成的流化床反应器中，氯化氢和氧气在特定的气体体积下以特定的摩尔比在表面速度，温度和压力下在催化剂存在下反应 主要由氧化铬组成并具有特定的粒度分布。 以催化剂层的静置高度，催化剂以特定的量填充。 催化剂可以保持其高活性。
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