Strengthening compositions and treatments for lignocellulosic materials
    8.
    发明授权
    Strengthening compositions and treatments for lignocellulosic materials 失效
    加强木质纤维素材料的组成和处理

    公开(公告)号:US06211357B1

    公开(公告)日:2001-04-03

    申请号:US09457826

    申请日:1999-12-09

    IPC分类号: B05D500

    CPC分类号: D21H21/18 D21H17/23 D21H17/54

    摘要: The strength of lignocellulosic materials is improved by treating them with water-soluble strengthening agents containing sulfonic units, and rendering these agents water-insoluble by reacting them with compounds containing epoxide rings and quaternary ammonium groups. Thus, a substantial reduction or elimination of the bleeding of said strengthening agents from the lignocellulosic materials when touched with wet hands or contacted under humid conditions is achieved.

    摘要翻译: 通过用含有磺酸单元的水溶性强化剂处理木素纤维素材料的强度得到改善,并且通过使它们与含有环氧化物环和季铵基团的化合物反应而使这些试剂变得不溶于水。 因此,实现了当用湿手触摸或在潮湿条件下接触时,所述强化剂从木质纤维素材料渗出的显着减少或消除。

    Biodegradable polymeric compositions and products thereof
    10.
    发明授权
    Biodegradable polymeric compositions and products thereof 失效
    可生物降解的聚合物组合物及其制品

    公开(公告)号:US5939467A

    公开(公告)日:1999-08-17

    申请号:US308066

    申请日:1994-09-16

    摘要: The present invention relates to polymeric compositions that are biodegradable and that can be melt processed into various forms, including films, fibers, and nonwovens. The compositions include compatible or semicompatible blends of biodegradable polymers and have physical and thermomechanical integrity. Films formed from preferred polymeric compositions are suitable for use as backsheets in disposable absorbent articles. In a preferred embodiment, the polymeric composition includes a polyhydroxyalkanoate and at least one other biodegradable polymer selected from aliphatic polyester-based polyurethanes, a polylactide, polycaprolactone, or a mixture of two or more of these polymers. Where the second polymer is polycaprolactone, the composition preferably also includes a third polymer for enhancing the melt processability of the composition.

    摘要翻译: 本发明涉及可生物降解并且可以熔融加工成各种形式的聚合物组合物,包括膜,纤维和无纺布。 组合物包括可生物降解的聚合物的相容或半相容的共混物,具有物理和热机械的完整性。 由优选的聚合物组合物形成的膜适合用作一次性吸收制品中的底片。 在优选的实施方案中,聚合物组合物包括聚羟基链烷酸酯和选自脂族聚酯基聚氨酯,聚丙交酯,聚己内酯或这些聚合物中的两种或更多种的混合物的至少一种其它可生物降解的聚合物。 当第二聚合物是聚己内酯时,组合物优选还包括用于增强组合物熔融加工性能的第三聚合物。