Starch derivatives grafted with aliphatic polyester, procedure for their
production and their use
    52.
    发明授权
    Starch derivatives grafted with aliphatic polyester, procedure for their production and their use 失效
    用脂肪族聚酯接枝的淀粉衍生物,其制备方法及其用途

    公开(公告)号:US5780568A

    公开(公告)日:1998-07-14

    申请号:US716433

    申请日:1996-11-27

    摘要: The invention relates to a procedure, to a grafted starch derivative produced by this procedure and method of using it. In the procedure a starch or starch derivative is graft-copolymerized with a cyclic ester, producing a starch derivative grafted with an aliphatic polyester. The procedure can be implemented as mass polymerization without the use of a solvent or other medium. The grafted starch derivative produced can be used as a component in hot-melt adhesives and as an impermeable coating for paper and cardboard.

    摘要翻译: PCT No.PCT / FI95 / 00148 Sec。 371日期:1996年11月27日 102(e)日期1996年11月27日PCT 1995年3月21日PCT PCT。 WO95 / 25750 PCT公开 日期1995年9月28日本发明涉及通过该方法制备的接枝淀粉衍生物及其使用方法。 在该方法中,淀粉或淀粉衍生物与环酯接枝共聚,产生用脂族聚酯接枝的淀粉衍生物。 该方法可以在不使用溶剂或其它介质的情况下实施为大规模聚合。 所生产的接枝淀粉衍生物可用作热熔粘合剂中的组分,也可用作纸和纸板的不渗透涂料。

    Esterfied, polyester-grafted starch
    54.
    发明授权
    Esterfied, polyester-grafted starch 失效
    酯化,聚酯接枝淀粉

    公开(公告)号:US5693786A

    公开(公告)日:1997-12-02

    申请号:US606703

    申请日:1996-02-26

    摘要: A starch derivative which, when incorporated with no or only a little plasticizer, yields moldings having good flexibility, toughness, and water-relating properties for practical use is an esterified, polyester-grafted starch which is formed by esterifying starch and grafting the starch with polyester. The esterification involves the introduction of one or more acyl groups consisting of saturated or unsaturated aliphatic acid groups or aromatic carboxylic acid groups having 2 to 18 carbon atoms and the polyester is one which is formed from one or more 4- to 12-membered lactones by ring-opening polymerization, with the terminal hydroxyl groups being almost completely blocked by esterification.

    摘要翻译: 一种淀粉衍生物,当与没有或只有少量增塑剂混合时,产生具有良好柔软性,韧性和水相关性能的实际应用的成型品是酯化的聚酯接枝淀粉,其通过酯化淀粉和将淀粉接枝 聚酯。 酯化包括引入一个或多个由饱和或不饱和脂肪酸基团或具有2至18个碳原子的芳族羧酸基团组成的酰基,并且聚酯是由一个或多个4至12元内酯由一个或多个4至12元内酯形成的酰基 开环聚合,末端羟基几乎完全被酯化阻断。

    Medical devices containing high inherent viscosity poly(p-dioxanone)
    60.
    发明授权
    Medical devices containing high inherent viscosity poly(p-dioxanone) 失效
    含有高特性粘度的聚(对二氧杂环己酮)

    公开(公告)号:US5611986A

    公开(公告)日:1997-03-18

    申请号:US270712

    申请日:1994-07-05

    摘要: The present invention discloses polymers of poly(p-dioxanone having an inherent viscosity in the range of from 2.3 dL/g to about 8 dL/g, as determined at a concentration of 0.1 g/dL in hexafluoroisopropanol at 25.degree. C. This invention also describes improved surgical devices and filaments made from poly(p-dioxanone) with an inherent viscosity in the range of from 2.3 dL/g to about 8 dL/g, determined at a concentration of 0.1 g/dL in hexafluoroisopropanol at 25.degree. C. Additionally, disclosed are processes for manufacturing poly(p-dioxanone) with an inherent viscosity in the range of from 2.3 dL/g to about 8 dL/g, as determined at a concentration of 0.1 g/dL in hexafluoroisopropanol at 25.degree. C., as well as, processes for molding surgical articles and extruding surgical filaments from these polymers.

    摘要翻译: 本发明公开了在25℃下在六氟异丙醇中以0.1g / dL的浓度测定的特性粘度范围为2.3dL / g至约8dL / g的聚对苯二甲酸酮的聚合物。本发明 还描述了在25℃下在六氟异丙醇中以0.1g / dL的浓度测定的具有2.3dL / g至约8dL / g范围内的特性粘度的由聚对二恶烷酮制成的改进的手术装置和细丝 此外,公开了在25℃下在六氟异丙醇中以0.1g / dL的浓度测定的特性粘度为2.3dL / g至约8dL / g的聚(对二恶烷酮)的方法 以及用于模制外科用品并从这些聚合物挤压外科长丝的方法。