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    Stable polyamide resin dispersions and methods for the manufacture thereof
    1.
    发明授权
    Stable polyamide resin dispersions and methods for the manufacture thereof 失效
    稳定的聚酰胺树脂分散体及其制造方法

    公开(公告)号：US5095058A

    公开(公告)日：1992-03-10

    申请号：US664276

    申请日：1991-03-04

    申请人： George A. Smith ,  Scott R. Hagedorn

    发明人： George A. Smith ,  Scott R. Hagedorn

    IPC分类号： C08J20060101 ,  C08J3/03 ,  C08J3/12 ,  C08J3/16 ,  C08J5/02 ,  C08L77/00 ,  C08L77/02 ,  C08L77/04 ,  C08L77/08 ,  C09D5/00 ,  C09D11/10 ,  C09D177/00 ,  C09J177/00 ,  C09J177/02 ,  C09J177/04 ,  C09J177/08

    CPC分类号： C08J3/03 ,  C08J2377/00

    摘要： Aqueous dispersions of polyamide resins having improved stability with respect to gelation and phase separation are provided, along with preparative methods therefor. The improved stability of the provided aqueous dispersions is achieved by the addition to such dispersion of a chemical moiety, such as a water soluble, amphoteric amino acid, anionic and cationic salts of amino acid, or mixtures thereof, in aqueous solutions. In a preferred embodiment, a dispersion-stabilizing amount of glycine is added with the inversion water used to invert an emulsion of water in polyamide resin. The resulting emulsion of resin in water is then cooled below the resin's melting point, causing the emulsified droplets of the polyamide resin to solidify as finely divided particles which are dispersed uniformly through the aqueous phase. The stable, aqueous dispersions of this invention are useful in coatings, inks, and as coatings for hot melt adhesive applications.

    摘要翻译： 提供了相对于凝胶化和相分离具有改进的稳定性的聚酰胺树脂的水分散体及其制备方法。 提供的水性分散体的改进的稳定性通过在水溶液中加入化学部分如水溶性，两性氨基酸，氨基酸的阴离子和阳离子盐或其混合物的这种分散体来实现。 在优选的实施方案中，加入分散稳定量的甘氨酸，其中使用反转水反转聚酰胺树脂中的水乳液。 然后将所得到的树脂在水中的乳液冷却到树脂的熔点以下，导致聚酰胺树脂的乳化液滴固化成均匀分散在水相中的细碎颗粒。 本发明的稳定的水性分散体可用于涂料，油墨和作为热熔粘合剂应用的涂料。