Biodegradable aliphatic polyester grafted with polyether and a process for preparing the same
    23.
    发明授权
    Biodegradable aliphatic polyester grafted with polyether and a process for preparing the same 失效
    用聚醚接枝的可生物降解的脂肪族聚酯及其制备方法

    公开(公告)号:US06221977B1

    公开(公告)日:2001-04-24

    申请号:US09405753

    申请日:1999-09-27

    IPC分类号: C08G6308

    摘要: The present invention provides a process for preparing biodegradable aliphatic polyester grafted with polyether which comprises a step of ring opening polymerization of a hydrophilic monomer of epoxide-substituted ethyleneglycolmethylether oligomer or ethyleneglycol oligomer, and a biocompatible cyclic monomer forming polymer backbone with the said monomer, and a non-toxic biodegradable polymer prepared therefrom. In accordance with the invention, the graft ratio and molecular weight of polyether in the biodegradable aliphatic polyester can be easily controlled, and the hydrophlicity and crystallinity are also regulated thereby. The biodegradable polymer of the invention has features of minimized protein adhesion and superior softness, due to its hydrophilic side-chain. Accordingly, it can be applied as biomedical polymers such as the matrices for drug delivery system, suture thread, or bioabsorbable and water-soluble polymers.

    摘要翻译: 本发明提供一种制备用聚醚接枝的可生物降解的脂肪族聚酯的方法,其包括环氧化物取代的乙二醇甲基醚低聚物或乙二醇低聚物的亲水性单体和与所述单体形成生物相容的环状单体的聚合物主链的开环聚合步骤,以及 由其制备的无毒可生物降解聚合物。 根据本发明,可以容易地控制可生物降解的脂族聚酯中的聚醚的接枝率和分子量,并且还调节亲水性和结晶度。 本发明的生物可降解聚合物具有由于其亲水性侧链而使蛋白质粘附和蛋白质粘度最小的特征。 因此,其可以用作生物医学聚合物,例如用于药物递送系统,缝合线或生物可吸收和水溶性聚合物的基质。

    Biodegradable polylactide nonwovens with improved fluid management properties
    24.
    发明授权
    Biodegradable polylactide nonwovens with improved fluid management properties 失效
    具有改善流体管理性能的可生物降解聚丙交酯非织造布

    公开(公告)号:US06201068B1

    公开(公告)日:2001-03-13

    申请号:US09436682

    申请日:1999-11-09

    IPC分类号: C08G6308

    摘要: A disposable article including a biodegradable nonwoven material having improved fluid management properties. The nonwoven material may be produced using thermoplastic compositions which comprise an unreacted mixture of a poly(lactic acid) polymer; a polybutylene succinate polymer or a polybutylene succinate adipate polymer, or a mixture of such polymers; and a wetting agent. The thermoplastic composition exhibits substantial biodegradable properties yet is easily processed. The biodegradable nonwoven materials may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.

    摘要翻译: 一次性制品,其包括具有改进的流体管理性能的可生物降解的非织造材 非织造材料可以使用包含聚(乳酸)聚合物的未反应混合物的热塑性组合物制备; 聚丁二酸丁二醇酯聚合物或聚丁二酸丁二醇酯己二酸酯聚合物,或这些聚合物的混合物; 和润湿剂。 热塑性组合物显示出显着的可生物降解性质,但易于加工。 可生物降解的非织造材料可以用于旨在吸收流体如体液的一次性吸收产品中。

    Process for producing polymer
    25.
    发明授权
    Process for producing polymer 有权
    生产聚合物的方法

    公开(公告)号:US06756472B1

    公开(公告)日:2004-06-29

    申请号:US09857943

    申请日:2001-06-12

    IPC分类号: C08G6308

    摘要: A process for producing a biodegradable polymer having free carboxyl at the &ohgr;-end charcterized by polymerizing a cyclic ester compound in the presence of a hydroxymonocarboxylic acid derivative having protected carboxyl or a hydroxydicarboxylic acid derivative having protected carboxyl, and then deprotecting the thus obtained polymer having protected carboxyl at the &ohgr;-end. Use of the above process makes it easy to control the molecular weight of the target biodegradable polymer and the content of free carboxyl therein, thereby enabling the efficient production of a polymer having a high purity and being contaminated with littel catalyst remaining therein.

    摘要翻译: 在具有被保护的羧基的羟基单羧酸衍生物或具有被保护的羧基的羟基二羧酸衍生物的存在下,通过使环状酯化合物聚合而制备在ω-末端具有游离羧基的可生物降解聚合物的方法,然后将由此得到的具有 在ω-末端保护羧基。 使用上述方法使得容易控制目标可生物降解聚合物的分子量和其中游离羧基的含量,从而能够有效地制备高纯度的聚合物,并被剩余的littel催化剂污染。

    Process for preparing reabsorbable polyesters by mass polymerization
    26.
    发明授权
    Process for preparing reabsorbable polyesters by mass polymerization 有权
    通过大量聚合制备可再吸收聚酯的方法

    公开(公告)号:US06706854B2

    公开(公告)日:2004-03-16

    申请号:US10339441

    申请日:2003-01-09

    IPC分类号: C08G6308

    摘要: The invention relates to a process for preparing reabsorbable polyesters by bulk polymerisation, wherein the reaction components are melted and homogenised in a stirred reactor, the reaction mixture is then transferred into a number of smaller-volume containers, the reaction mixture is polymerised in these containers and the polyester obtained is isolated by removing it from the containers, and the use of the reabsorbable polyesters thus produced for preparing reabsorbable implants.

    摘要翻译: 本发明涉及通过本体聚合制备可再吸收聚酯的方法,其中将反应组分在搅拌反应器中熔化和均化,然后将反应混合物转移到许多较小容积的容器中,将反应混合物在这些容器中聚合 并且通过将其从容器中除去而获得的聚酯被分离,并且使用由此制备的用于制备可再吸收植入物的可再吸收聚酯。

    Water-responsive, biodegradable compositions and films and articles comprising a blend of polylactide and polyvinyl alcohol and methods for making the same
    27.
    发明授权
    Water-responsive, biodegradable compositions and films and articles comprising a blend of polylactide and polyvinyl alcohol and methods for making the same 有权
    水反应性,可生物降解的组合物和包含聚丙交酯和聚乙烯醇的共混物的膜和制品及其制备方法

    公开(公告)号:US06552162B1

    公开(公告)日:2003-04-22

    申请号:US09525547

    申请日:2000-03-14

    IPC分类号: C08G6308

    摘要: The present invention is a water-responsive blend of a polylactide and a polyvinyl alcohol. The present invention includes films and personal care articles comprising a blend of a polyvinyl alcohol and a polylactide and includes a method of making such films and articles and a method of varying the water responsiveness of such films and articles. In a preferred embodiment, the compositions, films and articles comprise a blend of polyvinyl alcohol and modified polylactide. The compositions and films described herein are useful as a component in flushable and degradable articles.

    摘要翻译: 本发明是聚丙交酯和聚乙烯醇的水反应性共混物。 本发明包括包含聚乙烯醇和聚丙交酯的共混物的薄膜和个人护理制品,并且包括制备这种薄膜和制品的方法以及改变这些薄膜和制品的水分响应性的方法。 在优选的实施方案中,组合物,薄膜和制品包含聚乙烯醇和改性聚丙交酯的共混物。 本文所述的组合物和膜可用作可冲洗和可降解制品中的组分。

    Degradable polymer fibers; preparation product; and, methods of use
    28.
    发明授权
    Degradable polymer fibers; preparation product; and, methods of use 失效
    可降解聚合物纤维; 准备产品; 和使用方法

    公开(公告)号:US06506873B1

    公开(公告)日:2003-01-14

    申请号:US09072326

    申请日:1998-05-04

    IPC分类号: C08G6308

    摘要: The present invention relates to a fibrous material which includes a plurality of polylactide containing fibers. The plurality of polylactide containing fibers can be considered low shrinkage or high shrinkage. The plurality of polylactide containing fibers are considered low shrinkage fibers if they provide a boiling water shrinkage propensity of less than about 20%. The plurality of polylactide containing fibers are considered high shrink fibers if they provide an average fiber boiling water shrinkage propensity of greater than about 10% and a heat of fusion of less than about 25 J/g. The invention additionally relates to the use of an extrusion process to provide low shrinkage fibers and high shrinkage fibers. The invention further relates to the use of these fibers in desirable products.

    摘要翻译: 本发明涉及一种纤维材料,其包含多个含聚丙交酯的纤维。 多种含聚丙交酯的纤维可以被认为是低收缩率或高收缩率。 如果多个含聚丙交酯的纤维提供小于约20%的沸水收缩倾向,则将其视为低收缩纤维。 如果多个含聚丙交酯的纤维提供大于约10%的平均纤维沸水收缩倾向并且熔化热小于约25J / g,则将其视为高收缩纤维。 本发明还涉及使用挤出方法来提供低收缩纤维和高收缩纤维。 本发明还涉及这些纤维在所需产品中的用途。

    Lipase-catalyzed transesterifications to regulate copolymer structure
    29.
    发明授权
    Lipase-catalyzed transesterifications to regulate copolymer structure 失效
    脂肪酶催化酯交换以调节共聚物结构

    公开(公告)号:US06486295B1

    公开(公告)日:2002-11-26

    申请号:US09489772

    申请日:2000-01-24

    IPC分类号: C08G6308

    CPC分类号: C08G63/823 C08G64/30

    摘要: A method to regulate copolymer structure using lipase catalyzed transesterification reactions, by selecting a first reactant from the group consisting of polymers and monomers, selecting a second reactant from the group consisting of polymers and monomers, and combining the first reactant, the second reactant, and a lipase in a reaction vessel and allowing the ensuing transesterification reaction to proceed resulting in a polymer. The method allows one to regulate the copolymer repeat unit sequence distribution, and may take place with chain-length specificity such that activation of chains for exchange reactions with other chains or monomers can occur preferentially at certain locations along the chain.

    摘要翻译: 一种通过使用脂肪酶催化的酯交换反应来调节共聚物结构的方法,通过从由聚合物和单体组成的组中选择第一反应物,从第一反应物,第二反应物和 在反应容器中的脂肪酶,并允许随后的酯交换反应进行,得到聚合物。 该方法允许调节共聚物重复单元序列分布,并且可以以链长特异性进行,使得与其它链或单体的交换反应的链的活化可优先在沿着链的某些位置发生。

    Absorbable copolylactides and their use
    30.
    发明授权
    Absorbable copolylactides and their use 失效
    可吸收的苯丙酰胆碱及其用途

    公开(公告)号:US06472502B1

    公开(公告)日:2002-10-29

    申请号:US09641334

    申请日:2000-08-18

    IPC分类号: C08G6308

    摘要: The invention relates to novel copolylactides which have been polymerized from units of racemic lactide and the comonomers &egr;-caprolactone, &dgr;-valerolactone, 1,4-dioxan-2-one or 1,3-dioxan-2-one in a lactide/comonomer molar ratio of 90-80/10-20 in the presence of tin(II) di(ethylhexanoate) as initiator and of a cocatalyst at about 160° C., and have a glass transition temperature between 30 and 43° C., a molecular weight Mn of from 15,000 to 50,000 and a polydispersity Pn (Mw/Mn) between 1.2 and 2. The novel copolylactides are particularly suitable in an outstanding manner for the management of all types of wounds.

    摘要翻译: 本发明涉及从外消旋丙交酯和丙交酯/共聚单体中的共聚单体ε-己内酯,δ-戊内酯,1,4-二恶烷-2-酮或1,3-二恶烷-2-酮的单元聚合的新型共聚酰胺 摩尔比为90-80 / 10-20,在二(乙基己酸锡)锡(II)作为引发剂和助催化剂的存在下,约160℃,玻璃化转变温度为30-43℃, 分子量Mn为15,000至50,000,多分散性Pn(Mw / Mn)在1.2和2之间。新型共聚酰胺特别适用于所有类型伤口的管理。