Reactive adhesive dispersion and method of use
    3.
    发明授权
    Reactive adhesive dispersion and method of use 失效
    活性胶分散体及使用方法

    公开(公告)号:US4500703A

    公开(公告)日:1985-02-19

    申请号:US566414

    申请日:1983-12-28

    摘要: This invention relates to a storage stable, heat reactive, adhesive dispersion composition comprising a solid epoxy resin containing more than one epoxy group and a solid, sterically unhindered, tertiary amine catalyst in a liquid vehicle which is a non-solvent for the solids but in which said solids are at least partially soluble in the melt. Heating said dispersion to a temperature at or above which the solids melt results in a thermoset product usable as an adhesive, sealant or coating.

    摘要翻译: 本发明涉及一种储存稳定的热反应性粘合剂分散体组合物,其包含在液体载体中含有多于一个环氧基团的固体环氧树脂和固体空间非阻碍的叔胺催化剂,其为固体的非溶剂,但在 其中固体至少部分地可溶于熔体。 将所述分散体加热到等于或高于该温度的固体熔体导致用作粘合剂,密封剂或涂层的热固性产品。

    Flexible polyurethane foam based on MDI
    5.
    发明授权
    Flexible polyurethane foam based on MDI 失效
    基于MDI的柔性聚氨酯泡沫

    公开(公告)号:US4384050A

    公开(公告)日:1983-05-17

    申请号:US314554

    申请日:1981-10-26

    申请人: James L. Guthrie

    发明人: James L. Guthrie

    摘要: A flexible, hydrophobic polyurethane foam is produced by mixing together an aqueous phase which can optionally contain reinforcing fibers and surfactants and a resin phase comprising a prepolymer derived from a poly (oxy C.sub.2-4 alkylene) diol having a molecular weight of at least about 1100, an MDI containing isocyanate product having a functionality greater than 2.0 made of a mixture of MDI and isocyanate containing derivatives of MDI, and a monomeric polyol crosslinking agent having 3 or 4 hydroxyl equivalents per mole. The preferred polyol is trimethylolpropane and the diol is an equimolar mixture of Carbowax 1000 and Carbowax 1450. The diol and the polyol, such as trimethylolpropane, are present in a mole ratio in the range of 4:1 to 8:1 while the ratio of the isocyanate equivalents to the total hydroxyl equivalents is in the range of 2.5:1 to 3.5:1. The isocyanate containing product comprises less than 50% by weight of the prepolymer and Isonate 143L is the preferred isocyanate product. Flexible foams are obtained which are water-absorbing for medical or personal care applications.

    摘要翻译: 通过将可以任选地含有增强纤维和表面活性剂的水相混合在一起而制备柔性疏水性聚氨酯泡沫,以及包含衍生自分子量为至少约1100的聚(氧基C2-4亚烷基)二醇的预聚物的树脂相 MDI的异氰酸酯产物,其MDI大于2.0的MDI和异氰酸酯的混合物,MDI和每摩尔具有3或4个羟基当量的单体多元醇交联剂。 优选的多元醇是三羟甲基丙烷,二醇是Carbowax 1000和Carbowax 1450的等摩尔混合物。二醇和多元醇如三羟甲基丙烷以摩尔比在4:1至8:1的范围内存在,而 总羟基当量的异氰酸酯当量在2.5:1至3.5:1的范围内。 含异氰酸酯的产品包含小于50重量%的预聚物,而Isonate 143L是优选的异氰酸酯产物。 获得用于医疗或个人护理应用的吸水剂的柔性泡沫。