THERMOPLASTIC COMPOSITION
    5.
    发明申请

    公开(公告)号:US20190077958A1

    公开(公告)日:2019-03-14

    申请号:US16083511

    申请日:2017-03-07

    摘要: The present invention relates to a thermoplastic composition, in particular for use in extrusion and compounding, having a continuous phase, which comprises at least one first polymer, which is selected from a group comprising a polyester, a polyesteramide, a polyesteretheramide, an aliphatic or partially aromatic polyester urethane or mixtures thereof, in particular such compounds or mixtures having hydrophobic surface properties, and at least one dispersed phase, which, as the second polymer, comprises at least one biogenic crosslinking agent having a water content of 0.1 to 30 wt. %, in particular 5 to 25 wt. %, with reference to the total weight thereof, and wherein the first polymer of the continuous phase is not miscible with the second polymer of the dispersed phase, and has at least one inorganic filler, and at least one plasticizer. The composition according to the invention is characterized in that it has the plasticizer diglycerol or mixtures with diglycerol, and the filler is in a proportion of 0.1 to 40 wt. % with reference to the total weight of the composition.

    Biodegradable polymer
    7.
    发明授权
    Biodegradable polymer 有权
    生物降解聚合物

    公开(公告)号:US07094817B2

    公开(公告)日:2006-08-22

    申请号:US10474907

    申请日:2002-04-17

    IPC分类号: C08L3/02 C08L3/12

    摘要: A biodegradable polymer includes a) 20 to 60% of a mixture of starch and/or a modified starch, b) 8 to 22% of starch plasticisers and processing agents c) 30 to 70% of one or more biodegradable aliphatic polyesters d) 1 to 10% of a layered silicate clay mineral. The silicate mineral is an organoclay which has been formed by reacting clay with an intercalating chemical to compatibilise it with the polymers so that the clay is exfoliated and makes the blend amorphous. The polymers may also include the usual additives including e) from 0 to 20% by weight of a polyol plasticiser f) from 0.1 to 1.5% by weight of a C12–22 fatty acid or salt or a destructing agent preferably urea and/or urea derivatives, and g) from 0 to 12% by weight of added water. The polyester may be modified by reaction with maleic anhydride.

    摘要翻译: 可生物降解的聚合物包括a)20至60%的淀粉和/或改性淀粉的混合物,b)8至22%的淀粉增塑剂和加工剂c)30至70%的一种或多种可生物降解的脂族聚酯d)1 至10%的层状硅酸盐粘土矿物。 硅酸盐矿物是通过使粘土与嵌入化学物质反应形成的有机粘土,以使其与聚合物相容,使得粘土被剥离并使混合物成为无定形的。 聚合物还可以包括通常的添加剂,包括e)0-20重量%的多元醇增塑剂f)0.1-1.5重量%的C 12-22脂肪酸或盐或 破坏剂优选为脲和/或脲衍生物,和g)0至12重量%的加入的水。 可以通过与马来酸酐反应来改性聚酯。

    Encapsulation by entrapment within matrix of unmodified starch
    9.
    发明授权
    Encapsulation by entrapment within matrix of unmodified starch 失效
    通过在未改性淀粉的基质内捕获而包裹

    公开(公告)号:US4911952A

    公开(公告)日:1990-03-27

    申请号:US72201

    申请日:1987-07-10

    摘要: Chemical biological agents to be encapsulated are blended into an aqueous dispersion of an unmodified starch comprising about 5% to about 25% by weight amylose. The dispersion, having an initial starch solids content of about 20% by weight, is characterized by completely disrupted starch granules and completely disassociated amylose molecules that are not significantly depolymerized. Subsequent drying is accomplished by reassociation of the amylose molecules which converts the dispersion into a protective matrix and binds the agents within the interstices of the reassociating starch chains. Rate of release of agents to the environment can be altered by varying the proportion of amylose in the starch. Encapsulation of biologically active compositions provides protection against degradative environmental conditions, improves safety in handling, and slows the release of such compounds to the surrounding medium.

    摘要翻译: 将要包封的化学生物试剂掺入包含约5%至约25%重量的直链淀粉的未改性淀粉的水分散体中。 具有约20重量%的初始淀粉固体含量的分散体的特征在于完全破碎的淀粉颗粒和完全解离的未显着解聚的直链淀粉分子。 随后的干燥是通过重新缔合直链淀粉分子来完成的,所述直链淀粉分子将分散体转化成保护性基质,并将这些试剂结合在重新结合的淀粉链的空隙内。 通过改变淀粉中直链淀粉的比例可以改变试剂对环境的释放速率。 生物活性组合物的包封提供了防止降解环境条件的保护,提高了处理的安全性,并减缓了这些化合物向周围介质的释放。