Continuous polymerization method
    6.
    发明授权
    Continuous polymerization method 失效
    连续聚合法

    公开(公告)号:US4390684A

    公开(公告)日:1983-06-28

    申请号:US292073

    申请日:1981-08-12

    IPC分类号: B01J19/20 B29B7/48 C08G2/10

    CPC分类号: B29B7/481 B01J19/20

    摘要: A continuous polymerization method to obtain polymer production in the form of fine particles from a liquid polymerization medium; the reaction being conducted in a polymerization reactor wherein mixing is effected by the action of a plurality of elliptical paddles mounted on each of dual rotating shafts, characterised in that the dual shafts are rotated in reverse directions to each other, and the paddles being enclosed by walls of the reactor with the inside surface of the walls closely defining the surface generated by the rotation of the ends of both sets of paddles; and with the ends of major axes of the elliptical paddles on one rotating shaft periodically approaching the ends of minor axes of the corresponding elliptical paddles on the other rotating shaft to effect a mixing action as well as a longitudinal shearing action across a notional interface between the two shafts. The method is particularly useful for the polymerization of trioxane.

    摘要翻译: 从液体聚合介质获得细颗粒形式的聚合物生产的连续聚合方法; 反应在聚合反应器中进行,其中通过安装在每个双旋转轴上的多个椭圆形桨叶的作用进行混合,其特征在于,双轴彼此相反地旋转,并且叶片被 反应器的壁与壁的内表面紧密地限定由两组桨叶的端部旋转产生的表面; 并且在一个旋转轴上的椭圆形桨的长轴的端部周期性地接近另一旋转轴上的相应椭圆形桨叶的短轴的端部,以实现混合动作以及穿过两者之间的概念界面的纵向剪切动作 两轴。 该方法特别适用于三恶烷的聚合。

    Process for treating the surface of polyacetal resin
    8.
    发明授权
    Process for treating the surface of polyacetal resin 失效
    聚缩醛树脂表面处理方法

    公开(公告)号:US4418162A

    公开(公告)日:1983-11-29

    申请号:US339454

    申请日:1981-12-28

    IPC分类号: C08J7/14 C23C18/24 C08K9/04

    CPC分类号: C23C18/24

    摘要: A method for the surface treatment of polyacetal resin characterized in that the resin is treated with an acidic solution containing chloride ions and sulfuric acid ions can activate the surface so that the shaped article can be easily plated.

    摘要翻译: PCT No.PCT / JP81 / 00101 Sec。 371日期:1981年12月28日 102(e)1981年12月28日PCT申请1981年4月30日PCT公布。 公开号WO81 / 03178 日本1981年11月12日。一种聚缩醛树脂的表面处理方法,其特征在于,用含有氯离子的酸性溶液处理树脂,硫酸离子可以活化表面,使得成型制品能够容易地镀覆。