Epoxy-terminated polyoxazolidones and process for the preparation thereof
    1.
    发明授权
    Epoxy-terminated polyoxazolidones and process for the preparation thereof 失效
    环氧封端的聚氧杂环己烷及其制备方法

    公开(公告)号:US5112932A

    公开(公告)日:1992-05-12

    申请号:US531963

    申请日:1990-06-01

    摘要: Epoxy-terminated polyoxazolidone having from about 5 to about 30 weight percent of the isocyanate content are described. These polyoxazolidone are prepared by a process in which various process parameters are controlled in a targeted manner to give a product having from about 50 to about 100 percent of isocyanate groups converted to oxazolidone rings and from about 0 to about 50 percent of the isocyanate groups converted to isocyanurate rings. These epoxy terminated polyoxazolidones exhibit high glass transition temperatures and high resistance to chemicals when cured. They are useful for the preparation of electrical laminates, particularly laminates used in the preparation of electrical circuit boards.

    摘要翻译: 描述了具有约5至约30重量%异氰酸酯含量的环氧封端的聚恶唑烷酮。 这些聚恶唑烷酮通过以目标方式控制各种工艺参数以产生具有转化为恶唑烷酮环的约50至约100%的异氰酸酯基团和约0至约50%的异氰酸酯基团转化的产物的方法制备 到异氰脲酸酯环。 这些环氧封端的聚恶唑烷酮在固化时表现出高玻璃化转变温度和高抗化学药品。 它们可用于制备电气层压板,特别是用于制备电路板的层压板。

    Epoxy resins of controlled conversion and a process for their preparation
    2.
    发明授权
    Epoxy resins of controlled conversion and a process for their preparation 失效
    受控转化的环氧树脂及其制备方法

    公开(公告)号:US4722981A

    公开(公告)日:1988-02-02

    申请号:US10057

    申请日:1987-01-29

    摘要: Epoxy resins containing both terminal hydroxyl groups and epoxy or epoxy-derived groups are prepared by advancing a polyepoxide with a polyol and terminating the reaction at a point such that the epoxy resin reaction product contains both epoxy and terminal hydroxyl groups. The controlled conversion resins have improved cure rates. The epoxy groups can be further reacted to form epoxy-derived groups to improve the cure rate even further. The epoxy resins exhibit lower melt and solution viscosities than those exhibited by conventional epoxy resins having the same epoxy equivalent weight, as well as curing quickly when used. The resins are usefully employed at high solids levels in can coating formulations and other epoxy formulations wherein the resin is applied from an organic liquid solution or aqueous dispersion.

    摘要翻译: 含有末端羟基和环氧基或环氧衍生基团的环氧树脂是通过使多环氧化物与多元醇进行前提而终止反应,使得环氧树脂反应产物含有环氧基和末端羟基。 受控转化树脂具有改善的固化速率。 环氧基可以进一步反应以形成环氧衍生基团,以进一步提高固化速率。 与使用相同环氧当量的常规环氧树脂相比,环氧树脂的熔体和溶液粘度显示出较低的熔点和溶液粘度,以及使用时的快速固化。 这些树脂在罐头涂料配方和其它环氧树脂配方中以高固体含量有效地使用,其中树脂由有机液体溶液或水性分散体施加。

    Kinetically controlled in-situ generation of catalytic species for the
curing of epoxy/amine compositions
    3.
    发明授权
    Kinetically controlled in-situ generation of catalytic species for the curing of epoxy/amine compositions 失效
    用于固化环氧/胺组合物的催化物质的动态控制原位产生

    公开(公告)号:US5688877A

    公开(公告)日:1997-11-18

    申请号:US656262

    申请日:1996-06-11

    CPC分类号: C08G59/18 C08G59/50 C08G59/68

    摘要: A method of preparing epoxy parts wherein the interval of low viscosity of an amine-hardened epoxy system can be extended without sacrifice of cure time. Suitable catalysts for the epoxy-amine hardener reaction are generated in situ. As an advantage, more epoxy articles may be prepared with a given mold capacity having improved wet-out of fiber reinforcement attributed to a larger interval of low viscosity.

    摘要翻译: PCT No.PCT / US94 / 14692 Sec。 371日期:1996年6月11日 102(e)日期1996年6月11日PCT 1994年12月21日PCT PCT。 公开号WO95 / 18168 日期1995年7月6日制备环氧部分的方法,其中可以延长胺硬化环氧体系的低粘度间隔而不牺牲固化时间。 原位生成适用于环氧 - 胺硬化剂反应的催化剂。 作为优点,可以以给定的模具容量制备更多的环氧制品,其具有改进的纤维增强润湿,这归因于较大的低粘度间隔。

    Method for increasing the functionality of an epoxy resin
    4.
    发明授权
    Method for increasing the functionality of an epoxy resin 失效
    提高环氧树脂功能性的方法

    公开(公告)号:US4795791A

    公开(公告)日:1989-01-03

    申请号:US125907

    申请日:1987-11-27

    CPC分类号: C08G59/68 C08G59/00 C08G59/02

    摘要: Epoxy resins of increased functionality are prepared by branching the epoxy resin in the presence of a lithium or cesium compound as a branching catalyst until the desired functionality is obtained and thereafter terminating the branching reaction. Since the lithium and cesium compounds are not deactivated by the aliphatic chloride typically found in an epoxy resin, the branching reaction can effectively be conducted even at low concentrations of the lithium or cesium compound. Termination of the branching reaction is conducted by cooling the branching reaction mixture or by the addition of a deactivating agent which stops or effectively reduces the rate of the branching reaction. Due to the low conecntration at which the branching catlayst can be employed, the resulting branched epoxy resins can be prepared without visible turbidity.

    Method for increasing the functionality of an epoxy resin
    5.
    发明授权
    Method for increasing the functionality of an epoxy resin 失效
    提高环氧树脂功能性的方法

    公开(公告)号:US4722990A

    公开(公告)日:1988-02-02

    申请号:US766035

    申请日:1985-08-15

    CPC分类号: C08G59/68 C08G59/00 C08G59/02

    摘要: Epoxy resins of increased functionality are prepared by branching the epoxy resin in the presence of a lithium or cesium compound as a branching catalyst until the desired functionality is obtained and thereafter terminating the branching reaction. Since the lithium and cesium compounds are not deactivated by the aliphatic chloride typically found in an epoxy resin, the branching reaction can effectively be conducted even at low concentrations of the lithium or cesium compound. Termination of the branching reaction is conducted by cooling the branching reaction mixture or by the addition of a deactivating agent which stops or effectively reduces the rate of the branching reaction. Due to the low concentration at which the branching catalyst can be employed, the resulting branched epoxy resins can be prepared without visible turbidity.

    摘要翻译: 增加功能性的环氧树脂通过在作为支化催化剂的锂或铯化合物的存在下分支环氧树脂直到获得所需的官能团,然后终止支化反应来制备。 由于锂和铯化合物不通过通常在环氧树脂中发现的脂族氯化物而失活,所以即使在低浓度的锂或铯化合物下也能有效地进行支化反应。 通过冷却支化反应混合物或通过加入停止或有效降低分支反应速率的失活剂进行支化反应的终止。 由于可以使用分支催化剂的浓度低,可以制备得到的支化环氧树脂而没有可见的浊度。

    Flame retardant epoxy resin composition
    6.
    发明授权
    Flame retardant epoxy resin composition 失效
    阻燃环氧树脂组合物

    公开(公告)号:US06353080B1

    公开(公告)日:2002-03-05

    申请号:US09446771

    申请日:2000-03-20

    IPC分类号: C08G5968

    摘要: A flame retardant epoxy resin composition containing not more than 10% by wgt. of halogen, comprising an epoxy resin, stated concentrations of phosphoric acid ester, nitrogen—containing cross-linking agent having an amine functionality of at least 2 and a catalyst capable of promoting the reaction of the phosphoric acid ester with the epoxy resin and promoting the curing of the epoxy resin with the cross-linker, and optionally a Lewis acid in a stated amount.

    摘要翻译: 阻燃剂环氧树脂组合物,其含量不超过10重量%。 的卤素,包括环氧树脂,所述浓度的磷酸酯,胺官能度至少为2的含氮交联剂和能够促进磷酸酯与环氧树脂反应的催化剂,并促进 用交联剂固化环氧树脂,和任选地以规定量的路易斯酸。