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    Method for making polyimides and products produced thereby
    1.
    发明授权
    Method for making polyimides and products produced thereby 失效
    制造聚酰亚胺的方法及其生产的产品

    公开(公告)号：US4945170A

    公开(公告)日：1990-07-31

    申请号：US868489

    申请日：1986-05-30

    申请人： Dalip K. Kohli

    发明人： Dalip K. Kohli

    IPC分类号： C08G12/34 ,  C08G73/12

    CPC分类号： C08G12/34 ,  C08G73/121

    摘要： A method for making polyimide polymers is provided by effecting reaction between an aliphatically unsaturated imide, such as maleimide, formaldehyde, and an organic polyamine, for example trimethylene bis(4-aminobenzoate), for example in refluxing ethanol. The polyimides produced by the simple one-step method are pure, and exhibit superior toughness, and reduced shrinkage upon cure by heating. The new product are useful as molding compounds, laminating resins, and the like, being especially suitable for airplane parts, advanced composites, high performance adhesives and printed circuit boards.

    摘要翻译： 通过在脂肪族不饱和酰亚胺如马来酰亚胺，甲醛和有机多胺如三亚甲基双（4-氨基苯甲酸酯）之间进行反应来提供制备聚酰亚胺聚合物的方法，例如在回流乙醇中。 通过简单的一步法生产的聚酰亚胺是纯的，并且显示出优异的韧性，并且通过加热而降低固化后的收缩率。 新产品可用作模塑料，层压树脂等，特别适用于飞机零件，高级复合材料，高性能粘合剂和印刷电路板。

    Aromatic ether-ketone polyamines, intermediates and products, and methods for preparing same
    3.
    发明授权
    Aromatic ether-ketone polyamines, intermediates and products, and methods for preparing same 失效
    芳香醚酮多胺，中间体和产物及其制备方法

    公开(公告)号：US5026872A

    公开(公告)日：1991-06-25

    申请号：US576231

    申请日：1984-02-01

    申请人： Dalip K. Kohli

    发明人： Dalip K. Kohli

    IPC分类号： C07C217/70 ,  C07C217/90 ,  C07C225/22 ,  C08G59/50 ,  C08G73/10 ,  C08L63/00

    CPC分类号： C08G73/1071 ,  C07C217/70 ,  C07C217/90 ,  C07C225/22 ,  C08G59/504 ,  C08G73/105 ,  C08L63/00

    摘要： Novel aromatic ether ketone diamine compounds and methods for their preparation are disclosed which comprise from about 3 to 8 aromatic rings interspersed with ether and ketone linkages. The novel ether ketone diamine compounds are useful as monomeric starting materials for the preparation of useful intermediates and useful thermoplastic and high temperature resistant polymers. In preferred embodiments, the novel ether ketone diamines are useful as curing agents for epoxy resin compositions and composite materials.

    摘要翻译： 公开了新的芳族醚酮二胺化合物及其制备方法，其包含约3至8个散布有醚和酮键的芳环。 新型醚酮二胺化合物可用作制备有用中间体和有用的热塑性和耐高温聚合物的单体原料。 在优选的实施方案中，新型醚酮二胺可用作环氧树脂组合物和复合材料的固化剂。

    Epoxy resin compositions curable above 160 F. and below 250 F.
    5.
    发明授权
    Epoxy resin compositions curable above 160 F. and below 250 F. 失效
    环氧树脂组合物可在160°F以上和250°F以下固化。

    公开(公告)号：US4749729A

    公开(公告)日：1988-06-07

    申请号：US812345

    申请日：1985-12-23

    申请人： Dalip K. Kohli ,  Martin Hauser

    发明人： Dalip K. Kohli ,  Martin Hauser

    IPC分类号： C07D233/54 ,  C08G59/50 ,  C08G59/54 ,  C08G59/40

    CPC分类号： C07D233/54 ,  C08G59/5073 ,  C08G59/54

    摘要： New and improved heat curable compositions are disclosed comprising epoxidic prepolymers and mono- and di-imidazole-carboxamides. The compositions are stable at room temperature, but cure readily at moderate temperatures of substantially less than about 250.degree. F., preferably at about 180.degree. F. to about 200.degree. F. and especially preferably at about 160.degree. F. to about 180.degree. F. The cured neat resins are useful as adhesives and as matrix resins in reinforced composites, with excellent physical properties.

    摘要翻译： 公开了新的和改进的可热固化组合物，其包含环氧预聚物和单 - 和二 - 咪唑 - 甲酰胺。 组合物在室温下是稳定的，但在基本上小于约250°F，优选约180°F至约200°F，特别优选约160°F至约180°的中等温度下易于固化。 F.固化的纯树脂可用作增强复合材料中的粘合剂和基体树脂，具有优异的物理性能。

    Curable epoxy resin compositions
    7.
    发明授权
    Curable epoxy resin compositions 失效
    可固化环氧树脂组合物

    公开(公告)号：US4594373A

    公开(公告)日：1986-06-10

    申请号：US714137

    申请日：1985-04-26

    申请人： Dalip K. Kohli

    发明人： Dalip K. Kohli

    IPC分类号： C08G59/40 ,  C08G59/56 ,  C08L63/00 ,  C08K3/04

    CPC分类号： C08G59/56 ,  C08G59/4021

    摘要： Curable compositions comprising substituted bisurea catalyzed epoxide prepolymers alone, or with aromatic polyamine curing agents, alone, or in further combination with reinforcements, e.g., graphite fibers, and optionally modified with second resins are disclosed. The cured resin fiber matrix compositions exhibit high toughness combined with excellent hot/wet strength.

    摘要翻译： 公开了包含单独的取代的双脲催化的环氧化物预聚物或单独的芳族多胺固化剂，或与增强物例如石墨纤维进一步组合并且任选地用第二树脂改性的固化组合物。 固化的树脂纤维基质组合物显示出高韧性以及优异的热/湿强度。

    Curable epoxy resin compositions
    8.
    发明授权
    Curable epoxy resin compositions 失效
    可固化环氧树脂组合物

    公开(公告)号：US4645803A

    公开(公告)日：1987-02-24

    申请号：US584700

    申请日：1984-02-29

    申请人： Dalip K. Kohli ,  Michael M. Fisher

    发明人： Dalip K. Kohli ,  Michael M. Fisher

    IPC分类号： C08G59/50 ,  C08L63/00

    CPC分类号： C08G59/504 ,  C08G59/50 ,  C08L63/00

    摘要： New and improved heat curable compositions are disclosed comprising epoxidic resin(s) and aromatic ether-sulfone polyamines, alone or in combination with other diamine curing agents and/or curing catalysts alone, or in further combination with reinforcements, e.g., graphite fibers and, optionally modified with second resins. The cured neat resins and fiber resin matrix compositions exhibit high toughness, compression strength and short beam shear strength under dry, wet and hot/wet conditions.

    摘要翻译： 公开了新的和改进的可热固化组合物，其单独或与其它二胺固化剂和/或单独的固化催化剂组合的环氧树脂和芳族醚 - 砜多胺，或与增强剂例如石墨纤维进一步组合， 任选地用第二树脂改性。 固化的纯树脂和纤维树脂基质组合物在干，湿和热/湿条件下表现出高韧性，抗压强度和短束剪切强度。