Waterproof and breathable flat materials made from resin mixtures of
thermoplastic polyurethane
    21.
    发明授权
    Waterproof and breathable flat materials made from resin mixtures of thermoplastic polyurethane 失效
    由热塑性聚氨酯树脂混合物制成的防水透气扁平材料

    公开(公告)号:US5840812A

    公开(公告)日:1998-11-24

    申请号:US561988

    申请日:1995-11-22

    申请人: Dirk Schultze

    发明人: Dirk Schultze

    摘要: The present invention relates to waterproof but breathable flat materials prepared from the melt from polymer resin mixtures consisting of at least two different melt processable polyurethanes, wherein the different thermoplastic polyurethanes have soft segments with different chemical constitutions, wherein the thermoplastic polyurethane which forms the matrix is a polyurethane with a ether based soft segment, wherein the ether segment has a carbon/oxygen atomic ratio of at least two and at most three and is present at a rate of 70-95 wt. % with reference to the total weight of thermoplastic polyurethanes used for melt processing to produce a flat material, and wherein the flat materials according to the invention have a higher permeability to water vapour, determined according to DIN 53 122, and a lower water absorption, determined according to DIN 53 495, method C, than flat materials made from one of the polyurethanes used for the polymer resin mixture.

    摘要翻译: 本发明涉及由来自由至少两种不同的可熔融加工的聚氨酯组成的聚合物树脂混合物的熔体制备的防水透气扁平材料,其中不同的热塑性聚氨酯具有不同化学结构的软链段,其中形成基质的热塑性聚氨酯是 具有醚基软链段的聚氨酯,其中所述醚链段具有至少2个且至多3个的碳/氧原子比,并且以70-95wt。%的速率存在。 相对于用于熔融加工以生产扁平材料的热塑性聚氨酯的总重量,其中根据本发明的扁平材料具有根据DIN 53 122测定的较高的水蒸气渗透性,并且较低的吸水率, 根据DIN 53495,方法C确定,比由用于聚合物树脂混合物的聚氨酯之一制成的扁平材料。

    Heat-sealable multilayer film having good surface slip with improved
thermoformability based on polyamide and polyolefins
    22.
    发明授权
    Heat-sealable multilayer film having good surface slip with improved thermoformability based on polyamide and polyolefins 失效
    具有良好表面滑动性的可热封多层膜,具有改进的基于聚酰胺和聚烯烃的热成型性能

    公开(公告)号:US5750262A

    公开(公告)日:1998-05-12

    申请号:US668558

    申请日:1996-06-21

    IPC分类号: B32B27/08 B32B27/34 B32B27/06

    摘要: Heat-sealable composite film having good surface slip with very good thermoforming properties based on polyamide and polyolefins, wherein the film consists of at least one layer of aliphatic polyamide (A) and at least one layer of a polymer blend (B) consisting of 10-60 wt. % of amorphous polyamide and 40-90% of aliphatic polyamide and at least one thermoplastic heat sealing layer (C) and at least one bonding layer (D), arranged in such a manner that a heat sealing layer and a layer of aliphatic polyamide are located on the outer sides of the film, and wherein the film is not stretched.

    摘要翻译: 基于聚酰胺和聚烯烃,具有良好的热成型性能的具有良好表面滑动性的可热封复合膜,其中该膜由至少一层脂族聚酰胺(A)和至少一层聚合物共混物(B)组成,该层由10 -60重量% %的无定形聚酰胺和40-90%的脂肪族聚酰胺和至少一种热塑性热封层(C)和至少一个粘结层(D),以使得热封层和脂肪族聚酰胺层为 位于膜的外侧,并且其中膜不被拉伸。

    Cellulose ether compositions for aqueous media
    30.
    发明授权
    Cellulose ether compositions for aqueous media 失效
    用于水介质的纤维素醚组合物

    公开(公告)号:US5258429A

    公开(公告)日:1993-11-02

    申请号:US887124

    申请日:1992-05-20

    摘要: Cellulose ether compositions based on rapidly dissolving, pulverulent, water soluble cellulose ethers contain swellable and suction active superabsorbents to prevent the formation of lumps when dissolved. The cellulose ether composition can be converted into compression moulded pieces which retain the rapid solubility and dissolve without forming lumps.

    摘要翻译: 基于快速溶解,粉状,水溶性纤维素醚的纤维素醚组合物含有可膨胀和吸力的活性超吸收剂,以防止在溶解时形成团块。 纤维素醚组合物可以转化成压缩模制件,其保持快速溶解性并溶解而不形成团块。