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43 条记录 (耗时 0.023 秒)

    Method of producing ABS moulding compositions
    13.
    发明授权
    Method of producing ABS moulding compositions 失效
    生产ABS成型组合物的方法

    公开(公告)号：US5981644A

    公开(公告)日：1999-11-09

    申请号：US814988

    申请日：1997-03-14

    申请人： Ralph Ostarek ,  Herbert Eichenauer ,  Karl-Erwin Piejko ,  Frank Wingler ,  Claus Wulff

    发明人： Ralph Ostarek ,  Herbert Eichenauer ,  Karl-Erwin Piejko ,  Frank Wingler ,  Claus Wulff

    IPC分类号： C08L25/08 ,  C08F2/44 ,  C08F279/00 ,  C08F279/02 ,  C08F279/04 ,  C08L55/00 ,  C08L55/02 ,  C08L69/00 ,  C08J3/11

    CPC分类号： C08F279/02 ,  C08F279/04

    摘要： A method of producing ABS moulding compositions wherein a solution of polymers in group (A) solvents is gradually supplied to a polymerizing mixture of previously-formed soluble rubber, aromatic mono-alkenyl compounds, ethylenically unsaturated nitrites, optional other copolymerizable compounds and optionally a group (B) solvent or a mixture of group (A) and group (B) solvents, the gradual addition of the polymer solution to the polymerizing mixture being started before the beginning of phase inversion and at a monomer conversion rate of 5 to 15% and a viscosity of the polymerizing mixture of less than 20 Pa.sec with simultaneous continuation of polymerization, the group (A) solvent is an aliphatic (C.sub.1 -C.sub.8) or cycloaliphatic alcohol, ketone, ether, ester and/or nitrile, and the group (B) solvent is an aliphatic (C.sub.4 -C.sub.10), cycloaliphatic and/or aromatic hydrocarbon.

    摘要翻译： 一种制备ABS模塑组合物的方法，其中将（A）组溶剂中的聚合物溶液逐渐供应到预先形成的可溶性橡胶，芳族单链烯基化合物，烯属不饱和亚硝酸盐，任选的其它可共聚化合物和任选的基团 （B）溶剂或（A）组和（B）组溶剂的混合物中，聚合溶液逐渐加入到聚合混合物中，在相转变开始之前开始，单体转化率为5〜15％， 聚合混合物的粘度小于20Pa·s，同时持续聚合，基团（A）溶剂是脂族（C1-C8）或脂环族醇，酮，醚，酯和/或腈，基团 （B）溶剂是脂族（C 4 -C 10），脂环族和/或芳族烃。

    Process for the production of polycarbonate of constant viscosity
    18.
    发明授权
    Process for the production of polycarbonate of constant viscosity 失效
    用于生产恒定粘度的聚碳酸酯的方法

    公开(公告)号：US5412060A

    公开(公告)日：1995-05-02

    申请号：US189382

    申请日：1994-01-31

    申请人： Claus Wulff ,  Uwe Hucks ,  Rolf Bachmann ,  Gunther Weymans ,  Jurgen Kadelka ,  Wolfgang Herrig

    发明人： Claus Wulff ,  Uwe Hucks ,  Rolf Bachmann ,  Gunther Weymans ,  Jurgen Kadelka ,  Wolfgang Herrig

    IPC分类号： C08G64/24 ,  C08G64/00

    CPC分类号： C08G64/24

    摘要： The invention relates to a process for the production of polycarbonates by the two-phase interfacial method in which deviations between measured and estimated variables are continuously minimized by means of a suitably selected observer or filter system on the basis of a process model with an empirical Mark-Houwink relation adapted to the process. The variables estimated by the observer/filter are converted into control variables which are used to set input streams of the production process. Product quality is kept constant, changes in load or set values are quickly intercepted and even disturbances not readily accessible to measurement are taken into account by the process control.

    摘要翻译： 本发明涉及通过两相界面方法生产聚碳酸酯的方法，其中通过适当选择的观察者或过滤系统，在经验标记的过程模型的基础上，将测量值和估计变量之间的偏差连续最小化 -Houwink关系适应过程。 由观察者/过滤器估计的变量被转换为用于设置生产过程的输入流的控制变量。 产品质量保持不变，负载或设定值的变化被快速截断，并且通过过程控制考虑到测量中不容易获得的均匀干扰。