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1. 发明授权

US06169046A Absorbable barrier membrane 失效
标题翻译：可吸收阻隔膜
公开(公告)号：US06169046A
公开(公告)日：2001-01-02
申请号：US09044162
申请日：1998-03-19
申请人： Toshiki Shikata , Yasutoshi Kakizawa , Jyunzo Tanaka , Yasushi Suetsugu , Masanori Kikuchi , Hiroo Miyairi , Kazuo Takakuda , Yoshihisa Koyama
发明人： Toshiki Shikata , Yasutoshi Kakizawa , Jyunzo Tanaka , Yasushi Suetsugu , Masanori Kikuchi , Hiroo Miyairi , Kazuo Takakuda , Yoshihisa Koyama
IPC分类号： D04H100
CPC分类号： D04H1/435 , A61B17/6441 , A61F2/2846 , A61F2002/3092 , A61L31/06 , A61L31/127 , A61L31/148 , A61L2430/02 , D04H3/011 , Y10T442/637 , Y10T442/642 , Y10T442/696 , C08L67/04
摘要： The present invention provides an absorbable barrier membrane for guided tissue regeneration which is useful for regeneration of animal tissues, including those of humans, the absorbable barrier membrane being superior in heat stability, processability, reproducibility, storage stability, bioabsorbablity, and tissue regeneration effects, and further provides a method for regeneration, using the absorbable barrier membrane, of a mandible, periodontal tissue, or defective tubulous bone, and particularly a defective tubulous bone which possesses a segmental bone defect in which both ends of the bone are in separate segments. The above objects are attained by an absorbable barrier membrane for use in guided tissue generation, comprising a lactic copolyester in which a polymerization catalyst is deactivated, as an essential component.
摘要翻译：本发明提供一种用于引导组织再生的可吸收阻隔膜，其可用于包括人的动物组织的再生，可吸收的阻隔膜的热稳定性，加工性，再现性，储存稳定性，生物可吸收性和组织再生效果优异，并且还提供了使用可吸收阻隔膜，下颌骨，牙周组织或有缺陷的细小骨，特别是具有节段性骨缺损的不良管状骨的再生的方法，其中骨的两端分开。上述目的是通过用于导向组织生成的可吸收阻隔膜来实现的，其包括其中聚合催化剂失活的乳酸共聚酯作为必要组分。

2. 发明授权

US6110578A Expanded material and laminate 失效
标题翻译：膨胀材料和层压板
公开(公告)号：US6110578A
公开(公告)日：2000-08-29
申请号：US482111
申请日：2000-01-13
申请人： Yasutoshi Kakizawa , Toshiki Shikata
发明人： Yasutoshi Kakizawa , Toshiki Shikata
IPC分类号： C08J9/00 , B32B3/26
CPC分类号： C08J9/00 , C08J2367/02
摘要： The present invention provides a biodegradable expanded material having excellent expandability, moldability, impact resistance, heat resistance and storage stability. The present invention also provides a process for the preparation of the foregoing expanded material. The present invention further provides a laminate of a non-expanded material layer and an expanded material layer prepared from the foregoing expanded material which exhibits excellent impact resistance and heat resistance and an excellent transparency in the non-expanded material even after heat treatment so that a pattern printed on the inner side of the non-expanded material layer can be clearly viewed from the outside. A novel expanded material is provided made of a hydroxycarboxylic acid based polyester having a weight-average molecular weight of from 20,000 to 400,000 comprising as structural units a structural unit derived from hydroxycarboxylic acid, a structural unit derived from molecular weight increasing agent and/or a structural unit derived from polymerization catalyst deactivator.
摘要翻译：本发明提供具有优异的可膨胀性，成型性，耐冲击性，耐热性和储存稳定性的生物降解性发泡材料。本发明还提供了制备上述膨胀材料的方法。本发明还提供一种非发泡材料层和由上述膨胀材料制成的发泡材料层的叠层体，即使在热处理后也显示出优异的抗冲击性和耐热性，并且非发泡材料的透明度优异，可以从外部清楚地看到印刷在非发泡材料层的内侧上的图案。提供一种新型膨胀材料，其由重均分子量为20,000至400,000的羟基羧酸基聚酯制成，其包含衍生自羟基羧酸的结构单元作为结构单元，衍生自分子量增加剂的结构单元和/或衍生自聚合催化剂失活剂的结构单元。

3. 发明授权

US6037384A Expanded material and laminate 失效
公开(公告)号：US6037384A
公开(公告)日：2000-03-14
申请号：US753493
申请日：1996-11-26
申请人： Yasutoshi Kakizawa , Toshiki Shikata
发明人： Yasutoshi Kakizawa , Toshiki Shikata
IPC分类号： C08J9/00
CPC分类号： C08J9/00 , C08J2367/02 , Y10T428/249988
摘要： The present invention provides a biodegradable expanded material having excellent expandability, moldability, impact resistance, heat resistance and storage stability. The present invention also provides a process for the preparation of the foregoing expanded material. The present invention further provides a laminate of a non-expanded material layer and an expanded material layer prepared from the foregoing expanded material which exhibits excellent impact resistance and heat resistance and an excellent transparency in the non-expanded material even after heat treatment so that a pattern printed on the inner side of the non-expanded material layer can be clearly viewed from the outside. A novel expanded material is provided made of a hydroxycarboxylic acid based polyester having a weight-average molecular weight of from 20,000 to 400,000 comprising as structural units a structural unit derived from hydroxycarboxylic acid, a structural unit derived from molecular weight increasing agent and/or a structural unit derived from polymerization catalyst deactivator.

4. 发明授权

US5955529A Biodegradable material and process for the preparation thereof 失效
标题翻译：可生物降解材料及其制备方法
公开(公告)号：US5955529A
公开(公告)日：1999-09-21
申请号：US897140
申请日：1997-07-21
申请人： Yoji Imai , Yasutoshi Kakizawa , Masao Kamikura , Toshiki Shikata
发明人： Yoji Imai , Yasutoshi Kakizawa , Masao Kamikura , Toshiki Shikata
IPC分类号： A61B17/56 , A61B17/00 , A61F2/02 , A61F2/28 , A61F2/46 , A61K6/00 , A61K9/00 , A61K9/20 , A61L27/00 , A61L27/46 , A61L27/56 , A61L33/00 , C08K3/32 , C08F20/00
CPC分类号： A61L27/46 , A61K9/2009 , A61K9/204 , A61L27/56 , C08K3/32 , A61B2017/00004 , A61F2/28 , A61F2002/2817 , A61F2002/30062 , A61F2002/4631 , A61F2210/0004
摘要： The present invention provides a biodegradable material having excellent organic compatibility, moldability, mechanical properties, biodegradability and storage stability which can be used as bone substitute material, material for osteosynthesis, bone filling material, dental material, material having controlled release of chemical, material having controlled release of physiologically active compound or the like and a process for the preparation thereof. A novel biodegradable material is provided, comprising as essential components a lactic acid-based polymer (A) consisting of structural units (a) derived from lactic acid components and polyester structural units (b) derived from dicarboxylic acid components and diol components, the weight ratio of (a)/(b) being from 98/2 to 20/80, and a calcium phosphate-based compound (B), wherein the weight ratio of (A)/(B) is from 99/1 to 30/70. A process for the preparation of such a biodegradable material is also provided.
摘要翻译：本发明提供一种生物可降解材料，其具有优异的有机相容性，成型性，机械性能，生物降解性和储存稳定性，可用作骨替代材料，骨接合材料，骨填充材料，牙科材料，具有化学控制释放的材料，具有生理活性化合物等的控制释放及其制备方法。提供了一种新型的可生物降解材料，作为必要成分，由来自乳酸成分的结构单元（a）和由二羧酸成分和二醇成分得到的聚酯结构单元（b）构成的乳酸类聚合物（A）（A）/（b）的比例为98/20〜20/80，磷酸钙系化合物（B）的重量比为99/1〜30 / 70。还提供了一种制备这种可生物降解材料的方法。

5. 发明授权

US5686540A Process for the preparation of lactic acid-based polyester 失效
标题翻译：制备乳酸基聚酯的方法
公开(公告)号：US5686540A
公开(公告)日：1997-11-11
申请号：US722599
申请日：1996-09-27
申请人： Yasutoshi Kakizawa
发明人： Yasutoshi Kakizawa
IPC分类号： C08L67/02 , C08L67/04 , C08F20/00
CPC分类号： C08L67/02 , C08L67/04
摘要： The present invention provides a process for the preparation of a biodegradable lactic acid-based polyester composition excellent in thermal stability, storage stability, flexibility, heat resistance, mechanical and physical properties and moldability which comprises kneading a lactic acid-based polyester and a polyester consisting of dicarboxylic acid component(s) and diol component(s) with a chelating agent, an acidic phosphoric acid ester, a molecular weight increasing agent, etc., and then devolatizing the kneaded mixture. The present invention also provides a molding process of the foregoing lactic acid-based polyester composition. A novel process for the preparation of a lactic acid-based polyester composition is provided, which comprises melt-kneading a lactic acid-based polyester (A), a polyester (B) consisting of dicarboxylic acid component(s) and diol component(s) and a chelating agent and/or acidic phosphoric acid ester (C) in an amount such that the weight ratio (A)/(B is from 99/1 to 10/90 and the proportion of (C) is 0.001 to 5 parts by weight based on 100 parts by weight of the sum of (A) and (B). A novel process for molding a lactic acid-based polyester composition is also provided, which comprises kneading a lactic acid-based polyester (A) and a polyester (B) consisting of dicarboxylic acid component(s) and diol component(s) with a chelating agent and/or acidic phosphoric acid ester (C), and then molding the material.
摘要翻译：本发明提供一种制备热稳定性，保存稳定性，柔软性，耐热性，机械和物理性能以及成型性优异的生物降解性乳酸类聚酯组合物的方法，其包括将乳酸类聚酯与含有的二羧酸组分和二醇组分与螯合剂，酸性磷酸酯，分子量增加剂等混合，然后使捏合的混合物脱水。本发明还提供了上述乳酸类聚酯组合物的成型方法。提供了一种制备乳酸基聚酯组合物的新方法，其包括将乳酸基聚酯（A），由二羧酸组分和二醇组分（B）组成的聚酯（B））和螯合剂和/或酸性磷酸酯（C），其量使得重量比（A）/（B为99/1〜10/90，（C）的比例为0.001〜5份（A）和（B）之和的100重量份，还提供了一种新型的乳酸类聚酯组合物的成型方法，其包括将乳酸类聚酯（A）和由二羧酸组分和二醇组分与螯合剂和/或酸性磷酸酯（C）组成的聚酯（B），然后模塑该材料。

6. 发明授权

US5484882A Process for the continuous production of biodegradable polyester polymer 失效
标题翻译：连续生产可生物降解聚酯聚合物的方法
公开(公告)号：US5484882A
公开(公告)日：1996-01-16
申请号：US272191
申请日：1994-07-08
申请人： Morio Takada , Yasutoshi Kakizawa
发明人： Morio Takada , Yasutoshi Kakizawa
IPC分类号： C08G63/08 , C08G63/78 , C08L101/16 , C08F6/00
CPC分类号： C08G63/08 , Y02P20/582
摘要： The present invention provides a process for the continuous production of a biodegradable polyester polymer with an excellent quality useful in the field of medicine, coating material and packaging material by eliminating difficulty in uniform agitation and heat removal caused by the rise in the viscosity of reactants in the production of a high molecular biodegradable polyester polymer by ring-opening polymerization. In some detail, the present invention provides a process for the continuous production of a biodegradable polyester polymer having a melt viscosity of not more than 500,000 poise and a weight-average molecular weight of not less than 10,000, which comprises continuously supplying monomers or polymers selected from the group consisting of intermolecularly cyclized ester of hydroxycarboxylic acid, lactone, and polymer having hydroxyl group and/or ester bond into a continuous reaction apparatus equipped with a static mixer where the reactants are subjected to continuous polymerization reaction at a polymerization temperature of 125.degree. to 270.degree. C., a maximum system reaction pressure of 2 to 15 Kg/cm.sup.2 and a conversion (one pass) of not less than 85% in the presence or absence of solvent without coming into contact with oxygen and water in the atmosphere, and then subjected to devolatilization to remove and recover residual monomers and solvent for reuse.
摘要翻译：本发明提供了通过消除由于反应物的粘度升高引起的均匀搅拌和除热的困难而连续生产具有优异品质的可生物降解的聚酯聚合物的方法，其用于医药，涂料和包装材料领域通过开环聚合生产高分子生物降解聚酯聚合物。更详细地说，本发明提供了连续制备熔体粘度不超过500,000泊，重均分子量不小于10,000的可生物降解聚酯聚合物的方法，该方法包括连续供应选择的单体或聚合物由羟基羧酸的分子内环化的酯，具有羟基和/或酯键的聚合物组成的组中，连接反应装置，该反应装置配备有在125℃的聚合温度下使反应物进行连续聚合反应的静态混合器在270℃，最大系统反应压力为2至15Kg / cm 2，并且在存在或不存在溶剂的情况下转化率（一次通过）不低于85％，而不与大气中的氧气和水接触，然后进行脱挥发分以除去和回收残留的单体和溶剂以便重复使用。

7. 发明授权

US5403897A Process for producing lactic acid-based copolyester and packaging material 失效
标题翻译：生产乳酸基共聚酯和包装材料的方法
公开(公告)号：US5403897A
公开(公告)日：1995-04-04
申请号：US217719
申请日：1994-03-25
申请人： Hiroshi Ebato , Satoshi Oya , Yasutoshi Kakizawa , Hideyuki Furuta , Kosuke Arai
发明人： Hiroshi Ebato , Satoshi Oya , Yasutoshi Kakizawa , Hideyuki Furuta , Kosuke Arai
IPC分类号： C08G63/08 , C08G63/60 , C08G63/78 , C08L67/00 , C08L67/02 , C08L67/04 , C08F20/00 , B32B27/36
CPC分类号： C08L67/00 , C08G63/60 , Y10T428/31786
摘要： A process for producing a lactic acid-based copolyester by the ring-opening copolymerization and transesterification of a lactide (A) with an aromatic polyester (B) and/or an aliphatic polyester (C) in the presence of a ring-opening polymerization catalyst (D), and a packaging material comprising the lactic acid-based copolyester obtained by the process are disclosed. According to the present invention, a lactic acid-based degradable copolyester which has a sufficiently high molecular weight and satisfactory toughness and also has suitable rigidity, pliability, and transparency according to applications can be produced. Further, a general-purpose packaging material, e.g., a sheet or film, which comprises the lactic acid-based copolyester produced by the process and is excellent in formability, degradability, and transparency can also be produced.
摘要翻译：一种通过在开环聚合催化剂存在下通过丙交酯（A）与芳族聚酯（B）和/或脂族聚酯（C）的开环共聚和酯交换反应生产乳酸基共聚酯的方法（D），以及包含通过该方法得到的乳酸类共聚聚酯的包装材料。根据本发明，可以制备具有足够高的分子量和令人满意的韧性并且根据应用具有合适的刚性，柔韧性和透明度的乳酸类可降解共聚酯。此外，还可以制造包含通过该方法制备并且成形性，降解性和透明性优异的乳酸类共聚酯的通用包装材料，例如片材或薄膜。

8. 发明授权

US5844066A Process for the preparation of lactic acid-based polyester 失效
标题翻译：制备乳酸基聚酯的方法
公开(公告)号：US5844066A
公开(公告)日：1998-12-01
申请号：US712994
申请日：1996-09-10
申请人： Yasutoshi Kakizawa
发明人： Yasutoshi Kakizawa
IPC分类号： C08K5/00 , C08G63/06 , C08G63/60 , C08G63/88 , C08G63/90 , C08G63/91 , C08L67/00 , C08L67/04 , C08L101/16 , C08G63/08 , C08F20/00
CPC分类号： C08G63/60 , C08G63/912
摘要： The present invention provides a process for the preparation of a lactic acid-based polyester having an excellent moldability, storage stability and biodegradability which has a less residual lactide left therein and is less susceptible to decomposition of lactic acid-based polyester and attachment of sublimed lactide to the molding apparatus, etc. at the devolatilization step and molding step after the polymerization reaction of lactic acid-based polyester. In the present invention, an organic chelating agent is added to a lactic acid-based polyester to deactivate the esterification catalyst used in the preparation of the lactic acid-based polyester, making it possible to inhibit the decomposition of lactic acid-based polyester at the devolatilizing process and molding process after polymerization reaction. Accordingly, a process for the preparation of a lactic acid-based polyester useful as a packaging material such as film and sheet having a high molecular weight, a high heat resistance, good mechanical properties and excellent moldability, storage stability and biodegradability can be provided.
摘要翻译：本发明提供一种制备具有优异的成型性，保存稳定性和生物降解性的乳酸类聚酯的方法，其残留的残留丙交酯残留在乳酸基聚酯中并不易分解，并且升华的丙交酯的附着在乳酸类聚酯的聚合反应之后的脱挥发分步骤和成型步骤中的成型装置等。在本发明中，向乳酸类聚酯中添加有机螯合剂使乳酸类聚酯的制造中所使用的酯化催化剂失活，能够抑制乳酸类聚酯的分解脱挥发分过程和聚合反应后的成型工艺。因此，可以提供一种制备用作具有高分子量，高耐热性，良好机械性能和优异的成型性，保存稳定性和生物降解性的包装材料如薄膜和片材的乳酸基聚酯的方法。

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