Cure inhibited epoxy resin compositions and laminates prepared from the
compositions
    2.
    发明授权
    Cure inhibited epoxy resin compositions and laminates prepared from the compositions 失效
    固化抑制了由组合物制备的环氧树脂组合物和层压材料

    公开(公告)号:US5308895A

    公开(公告)日:1994-05-03

    申请号:US848499

    申请日:1992-03-06

    摘要: In summary, the invention is related to the discovery of a class of compounds which inhibits the reaction of a polyepoxide with a curing agent at low temperatures. More particularly the invention relates to an epoxy resin composition comprisinga) a polyepoxide; andb) a cure inhibitor comprising boric acid or maleic acid.In another embodiment, the invention comprises an epoxy resin composition comprisinga) a polyepoxide;b) a cure inhibitor comprising boric acid or maleic acid,c) a curing agent without phenolic hydroxyl moieties, andd) optionally a catalyst for the reaction of the polyepoxide with the curing agent.In still another embodiment the invention relates to a composition useful for curing a polyepoxide which comprisesa) a curing agent capable of reacting with a polyepoxide at elevated temperatures; andb) an inhibiting amount of boric acid or maleic acid; and optionallyc) a catalytic amount of a catalyst useful for accelerating the reaction of a polyepoxide with the curing agent.

    摘要翻译: 总之,本发明涉及在低温下抑制聚环氧化物与固化剂的反应的一类化合物的发现。 更具体地说,本发明涉及包含a)聚环氧化物的环氧树脂组合物; 和b)包含硼酸或马来酸的固化抑制剂。 在另一个实施方案中,本发明包括环氧树脂组合物,其包含a)聚环氧化物; b)包含硼酸或马来酸的固化抑制剂,c)没有酚羟基部分的固化剂,和d)任选的用于使聚环氧化物与固化剂反应的催化剂。 在另一个实施方案中,本发明涉及可用于固化聚环氧化物的组合物,其包含a)能够在高温下与聚环氧化物反应的固化剂; 和b)硼酸或马来酸的抑制量; 和任选地c)催化量的催化剂,其可用于加速聚环氧化物与固化剂的反应。

    Dihydroxypropoxy derivatives of hydroxybenzamides
    6.
    发明授权
    Dihydroxypropoxy derivatives of hydroxybenzamides 失效
    羟基苯甲酰胺的二羟基丙氧基衍生物

    公开(公告)号:US4675443A

    公开(公告)日:1987-06-23

    申请号:US377732

    申请日:1982-05-13

    摘要: New epoxy resins are prepared by reacting a hydroxybenzamide or derivative thereof with an epihalohydrin followed by dehydrohalogenation. These epoxy resins have crystalline melting points, self-cure at elevated temperatures and cure rapidly in the presence of the usual epoxy resin curing agents. Also disclosed are hydrolyzed products of these epoxy resins and subsequent reactions with polyisocyanates.

    摘要翻译: 通过使羟基苯甲酰胺或其衍生物与表卤代醇反应,然后脱卤化氢来制备新的环氧树脂。 这些环氧树脂具有结晶熔点,在升高的温度下自固化并在通常的环氧树脂固化剂存在下快速固化。 还公开了这些环氧树脂的水解产物和随后与多异氰酸酯的反应。

    Process for preparing low molecular weight epoxy resins
    9.
    发明授权
    Process for preparing low molecular weight epoxy resins 失效
    制备低分子量环氧树脂的方法

    公开(公告)号:US4408062A

    公开(公告)日:1983-10-04

    申请号:US359463

    申请日:1982-03-18

    IPC分类号: C07D301/28 C08G59/06

    CPC分类号: C08G59/063

    摘要: The epihalohydrin yield in a process for preparing low molecular weight epoxy resins by coupling a polyhydric phenol and an epihalohydrin in the presence of an alkali metal hydroxide and subsequent dehydrohalogenation is improved by employing stoichiometric quantities of the alkali metal hydroxide with respect to the polyhydric phenol in the coupling reaction and also conducting the coupling reaction in the presence of a halohydrin that is at least as reactive as the halohydrin being formed.

    摘要翻译: 通过在碱金属氢氧化物存在下偶联多元酚和表卤代醇并随后脱卤化氢制备低分子量环氧树脂的方法中的表卤代醇产率通过使用化学计量的碱金属氢氧化物相对于多元酚而得到改善 偶联反应,并且在卤代醇存在下进行偶联反应,所述卤代醇至少与形成的卤代醇具有反应性。