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1. 发明授权

US5463086A Process for producing lactides and process for purifying crude lactides 失效
标题翻译：制备丙交酯的方法和粗制丙交酯的纯化方法
公开(公告)号：US5463086A
公开(公告)日：1995-10-31
申请号：US207197
申请日：1994-03-08
申请人： Kazuomi Kubota , Yoichi Murakami
发明人： Kazuomi Kubota , Yoichi Murakami
IPC分类号： C07D319/12 , C07D319/00
CPC分类号： C07D319/12
摘要： A process for producing a meso-compound-containing lactide, comprising thermally decomposing a hydroxycarboxylic acid oligomer in the presence of a salt of an alkali metal except sodium and in the presence or absence of a metal of the groups 4 to 15 of the periodic table and/or a salt thereof; and a process for purifying a crude lactide comprising recrystallizing a crude lactide using a poor solvent and a good solvent selected from aliphatic tertiary alcohols, ketones and esters are disclosed. The production ratio of a meso-lactide can be controlled by selection of the kind and the amount of a catalyst so as to obtain a lactide having an appropriate optical purity suitable for production of biodegradable polymers. The purification process achieves a high recovery.
摘要翻译：一种含有含内消旋化合物的丙交酯的制造方法，其特征在于，在除了钠以外的碱金属盐和存在或不存在周期表第4〜15族金属的情况下，热分解羟基羧酸低聚物和/或其盐; 公开了使用不良溶剂和选自脂族叔醇，酮和酯的良溶剂重结晶粗丙交酯的粗丙交酯的纯化方法。可以通过选择催化剂的种类和量来控制内消旋丙交酯的生产比例，从而获得具有适合于生产可生物降解的聚合物的适当光学纯度的丙交酯。净化过程达到高回收率。

2. 发明授权

US09474835B2 Block copolymer and antithrombotic coating agent 有权
标题翻译：嵌段共聚物和抗凝血剂
公开(公告)号：US09474835B2
公开(公告)日：2016-10-25
申请号：US14237664
申请日：2012-08-10
申请人： Kazutoshi Haraguchi , Kazuomi Kubota , Tooru Takehisa , Tetsuo Takada , Noriko Santou
发明人： Kazutoshi Haraguchi , Kazuomi Kubota , Tooru Takehisa , Tetsuo Takada , Noriko Santou
IPC分类号： C08F220/56 , C08F220/58 , C09D133/26 , C09D153/00 , A61L33/06 , C08F293/00
CPC分类号： A61L33/064 , A61L33/06 , C08F220/56 , C08F293/005 , C08F2438/03 , C09D133/26 , C09D153/00 , C08F2220/281 , C08F220/58
摘要： The object of the present invention is achieved by providing a copolymer, in particular, a block copolymer which has excellent coating formation ability, adhesive properties to a substrate, and does not adsorb protein; an antithrombotic coating agent which has superior antithrombotic properties and adhesive properties to a substrate to those of the conventional antithrombotic coating agent; and a medical instrument which is obtained by coating the antithrombotic coating agent, and the block copolymer includes a polymer (A) containing a (meth)acrylic ester monomer and a polymer (B) containing a (meth)acrylamide monomer and has excellent coating formation ability and high adhesive properties to a substrate.
摘要翻译：本发明的目的是通过提供共聚物，特别是具有优异的涂层形成能力，对基材的粘合性能并且不吸附蛋白质的嵌段共聚物来实现的; 一种抗血栓形成剂，其具有优异的抗血栓形成性能和对基质的粘合性能，与常规抗凝血剂的抗凝血性能和粘合性能相当; 以及通过涂布抗血栓形成剂而得到的医疗器械，嵌段共聚物包含含有（甲基）丙烯酸酯单体的聚合物（A）和含有（甲基）丙烯酰胺单体的聚合物（B），并且具有优异的涂布形成能力和高粘合性能。

3. 发明申请

US20140235748A1 BLOCK COPOLYMER AND ANTITHROMBOTIC COATING AGENT 有权
标题翻译：嵌段共聚物和抗静电涂料
公开(公告)号：US20140235748A1
公开(公告)日：2014-08-21
申请号：US14237664
申请日：2012-08-10
申请人： Kazutoshi Haraguchi , Kazuomi Kubota , Tooru Takehisa , Tetsuo Takada , Noriko Santou
发明人： Kazutoshi Haraguchi , Kazuomi Kubota , Tooru Takehisa , Tetsuo Takada , Noriko Santou
IPC分类号： A61L33/06
CPC分类号： A61L33/064 , A61L33/06 , C08F220/56 , C08F293/005 , C08F2438/03 , C09D133/26 , C09D153/00 , C08F2220/281 , C08F220/58
摘要： The object of the present invention is achieved by providing a copolymer, in particular, a block copolymer which has excellent coating formation ability, adhesive properties to a substrate, and does not adsorb protein; an antithrombotic coating agent which has superior antithrombotic properties and adhesive properties to a substrate to those of the conventional antithrombotic coating agent; and a medical instrument which is obtained by coating the antithrombotic coating agent, and the block copolymer includes a polymer (A) containing a (meth)acrylic ester monomer and a polymer (B) containing a (meth)acrylamide monomer and has excellent coating formation ability and high adhesive properties to a substrate.
摘要翻译：本发明的目的是通过提供共聚物，特别是具有优异的涂层形成能力，对基材的粘合性能并且不吸附蛋白质的嵌段共聚物来实现的; 一种抗血栓形成剂，其具有优异的抗血栓形成性能和对基质的粘合性能，与常规抗凝血剂的抗凝血性能和粘合性能相当; 以及通过涂布抗血栓形成剂而得到的医疗器械，嵌段共聚物包含含有（甲基）丙烯酸酯单体的聚合物（A）和含有（甲基）丙烯酰胺单体的聚合物（B），并且具有优异的涂布形成能力和高粘合性能。

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