Halogenated advanced epoxy resins
    4.
    发明授权
    Halogenated advanced epoxy resins 失效
    卤化高级环氧树脂

    公开(公告)号:US4895755A

    公开(公告)日:1990-01-23

    申请号:US259449

    申请日:1988-10-14

    摘要: Advanced epoxy resins are disclosed which result from the reaction of a relatively low molecular weight epoxy resin and a polyhydric phenol wherein at least one of the reactants contains at least one halogen atom which is meta with respect to a glycidyl ether group or a hydroxyl group attached to an aromatic ring. These advanced epoxy resins, when cured with a suitable curing agent, possess an improvement as compared to an advanced epoxy resin containing halogen atoms which are ortho with respect to a glycidyl ether group in at least one of thermal stability, glass transition temperature, relationship of viscosity to molecular weight and resistance to forming hydrolyzed halides in the presence of a refluxing solution of an alkali metal hydroxide.

    摘要翻译: 公开了先进的环氧树脂,其由相对低分子量的环氧树脂和多元酚的反应产生,其中至少一种反应物含有至少一个相对于缩水甘油醚基团或羟基的元素的卤素原子 到一个芳香环。 这些先进的环氧树脂在用适当的固化剂固化时具有改进,与在热稳定性,玻璃化转变温度,玻璃化转变温度的关系中,相对于缩水甘油基醚基相邻的卤素原子的先进环氧树脂相比, 在碱金属氢氧化物的回流溶液存在下,粘度对分子量和耐水解卤化物的抗性。

    Halogenated epoxy resins
    8.
    发明授权
    Halogenated epoxy resins 失效
    卤化环氧树脂

    公开(公告)号:US4727119A

    公开(公告)日:1988-02-23

    申请号:US907706

    申请日:1986-09-15

    摘要: Halogenated aromatic epoxy resins are disclosed wherein the halogen atoms are in the meta position with respect to a glycidyl ether group attached to an aromatic ring.Advanced epoxy resins are disclosed which result from the reaction of a relatively low molecular weight epoxy resin and a polyhydric phenol wherein at least one of the reactants contains at least one halogen atom which is meta with respect to a glycidyl ether group or a hydroxyl group attached to an aromatic ring. These advanced epoxy resins, when cured with a suitable curing agent, possess an improvement as compared to an advanced epoxy resin containing halogen atoms which are ortho with respect to a glycidyl ether group in at least one of thermal stability, glass transition temperature, relationship of viscosity to molecular weight and resistance to forming hydrolyzed halides in the presence of a refluxing solution of an alkali metal hydroxide.

    摘要翻译: 公开了卤化芳族环氧树脂,其中卤素原子相对于连接到芳族环上的缩水甘油醚基团处于间位。 公开了先进的环氧树脂,其由相对低分子量的环氧树脂和多元酚的反应产生,其中至少一种反应物含有至少一个相对于缩水甘油醚基团或羟基的元素的卤素原子 到一个芳香环。 这些先进的环氧树脂在用适当的固化剂固化时具有改进,与在热稳定性,玻璃化转变温度,玻璃化转变温度的关系中,相对于缩水甘油基醚基相邻的卤素原子的先进环氧树脂相比, 在碱金属氢氧化物的回流溶液存在下,粘度对分子量和耐水解卤化物的抗性。

    Preparation of epoxy resins
    10.
    发明授权
    Preparation of epoxy resins 失效
    环氧树脂的制备

    公开(公告)号:US4499255A

    公开(公告)日:1985-02-12

    申请号:US523910

    申请日:1983-08-16

    IPC分类号: C08G59/06 C08G59/10

    CPC分类号: C08G59/10 C08G59/063

    摘要: Epoxy resins are prepared by reacting an excess of an epihalohydrin with a phenolic hydroxyl-containing compound in the presence of the incremental addition of a basic catalyst while removing water by codistilling with a solvent and epihalohydrin.

    摘要翻译: 环氧树脂通过使过量的表卤代醇与含酚羟基的化合物在增量添加碱性催化剂的存在下反应制备,同时通过用溶剂和表卤代醇进行分馏除去水。