Polyurethane dispersion in alcohol-water system
    66.
    发明授权
    Polyurethane dispersion in alcohol-water system 失效
    酒精 - 水体系中的聚氨酯分散体

    公开(公告)号:US06433073B1

    公开(公告)日:2002-08-13

    申请号:US09626028

    申请日:2000-07-27

    IPC分类号: C08J303

    摘要: A polyurethane dispersion and a method of making are provided. The polyurethane dispersion is stable in a mixture of alcohol and water. The dispersion comprises the reaction product of (a) an isocyanate terminated polyurethane prepolymer comprising the reaction product of (i) at least one oligomeric polyactive hydrogen compound insoluble in said alcohol, wherein said polyactive hydrogen compound is an alkyl, aryl, or aralkyl structure optionally substituted by N, O, and S; (ii) at least one polyisocyanate, and (iii) at least one polyactive hydrogen compound soluble in said mixture of alcohol and water; (b) a polyfunctional chain extender; and (c) a monofunctional chain terminator; wherein the equivalent ratio of difunctional chain extender to prepolymer isocyanate is 0.60 to 1.20.

    摘要翻译: 提供聚氨酯分散体和制造方法。 聚氨酯分散体在醇和水的混合物中是稳定的。 分散体包含(a)异氰酸酯封端的聚氨酯预聚物的反应产物,其包含(i)至少一种不溶于所述醇的低聚物多官能氢化合物的反应产物,其中所述多官能氢化合物是任选的烷基,芳基或芳烷基结构 被N,O和S取代; (ii)至少一种多异氰酸酯,和(iii)至少一种可溶于所述醇和水的混合物的多官能氢化合物; (b)多官能增链剂; 和(c)单官能链终止剂; 其中双官能扩链剂与预聚物异氰酸酯的当量比为0.60〜1.20。

    CURABLE COMPOSITIONS
    68.
    发明申请
    CURABLE COMPOSITIONS 有权
    可固化组合物

    公开(公告)号:US20130225725A1

    公开(公告)日:2013-08-29

    申请号:US13883400

    申请日:2011-11-08

    IPC分类号: C09J163/00 C09D163/00

    摘要: Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured compositions can be used as structural adhesives. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.

    摘要翻译: 描述了包含固化组合物的可固化组合物,固化组合物和制品。 可固化组合物包含a)环氧树脂,b)固化剂,c)反应性液体改性剂,和d)增韧剂。 固化的组合物可以用作结构粘合剂。 反应性液体改性剂是二聚醇的乙酰乙酸酯。 固化的组合物可以用作粘合剂如结构粘合剂或聚合物涂层。