利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8 条记录 (耗时 0.021 秒)

    Process for the production of polycarbonate
    2.
    发明授权
    Process for the production of polycarbonate 失效
    聚碳酸酯生产工艺

    公开(公告)号：US5258484A

    公开(公告)日：1993-11-02

    申请号：US902356

    申请日：1992-06-19

    申请人： Reinhard Schomacker ,  Uwe Hucks ,  Gunther Weymans ,  Wolfgang Herrig ,  Jurgen Kirsch

    发明人： Reinhard Schomacker ,  Uwe Hucks ,  Gunther Weymans ,  Wolfgang Herrig ,  Jurgen Kirsch

    IPC分类号： C08G64/22 ,  C08G64/24

    CPC分类号： C08G64/24

    摘要： A process for the continuous production of a thermoplastic aromatic polycarbonate is disclosed. Accordingly, in a reactor system which includes a tube reactor and a tank equipped with a stirrer, there are reacted a preheated dialkali diphenolate aqueous solution with gaseous phosgene in CH.sub.2 Cl.sub.2 and/or in chlorobenzene solution containing excess phosgene, in a mixer to form a mixed emulsion. The emulsion is then transported at least partly against the force of gravity into the tube reactor to facilitate a polycondensation reaction and in which after a residence time of at least 10 seconds and without dissipation of the heat of reaction there is added a chain terminator. The heat of reaction is dissipated in said tank and aqueous sodium hydroxide and catalyst are added to complete the reaction. The process according to the invention leads to high yields of phosgene.

    摘要翻译： 公开了连续生产热塑性芳族聚碳酸酯的方法。 因此，在包括管式反应器和装有搅拌器的罐的反应器系统中，在混合器中使预热的二元醇二酚盐水溶液与气态光气在CH 2 Cl 2中和/或含有过量光气的氯苯溶液中反应，形成混合 乳液。 然后将乳液至少部分地抵抗重力输送到管式反应器中以促进缩聚反应，并且其中在至少10秒的停留时间之后并且不消耗反应热量时，添加了链终止剂。 在所述槽中消散反应热，加入氢氧化钠水溶液和催化剂以完成反应。 根据本发明的方法导致高产率的光气。

    Method for the work-up of a surfactant-containing reaction mixture
    5.
    发明授权
    Method for the work-up of a surfactant-containing reaction mixture 失效
    用于处理含表面活性剂的反应混合物的方法

    公开(公告)号：US5912390A

    公开(公告)日：1999-06-15

    申请号：US568055

    申请日：1995-12-06

    申请人： Ortwin Wagner ,  Reinhard Schomacker

    发明人： Ortwin Wagner ,  Reinhard Schomacker

    IPC分类号： B01D17/00 ,  B01D17/04 ,  C07B35/06 ,  C07B63/00 ,  C07C5/00 ,  C07C17/25 ,  C07C21/21 ,  C07C41/34 ,  C07C41/38 ,  C07C43/205 ,  C07C67/10 ,  C07C67/58 ,  C07C209/86 ,  C07C231/08 ,  C07C253/34 ,  C07C255/04 ,  C07C41/40

    CPC分类号： C07B63/00 ,  B01D17/042 ,  C07C41/16 ,  C07C41/34 ,  Y10S516/925

    摘要： A method for the work-up of a nonionic surfactant-containing microemulsion reaction mixture formed in the o-alkylation of phenols by an alkyl halide in the presence of sodium hydroxide. Said mixture has one reaction product present as an aqueous phase and a further reaction product present as a water immiscible phase and which the reaction mixture is obtained in microemulsion form. Said reaction mixture is worked up by:a) subjecting this microemulsion to a temperature decreased by 20 to 50K thereby forming an aqueous phase having a high surfactant content and a substantially surfactant-free organic phase,b) separating off the substantially surfactant-free organic phase formed and replacing said surfactant-free organic phase with an organic solution of the alkyl halide. After the replacement of the substantially surfactant-free phase,c) the reaction mixture thus treated is subjected to a temperature increase by 10 to 80K thereby forming a substantially surfactant-free aqueous phase and a high surfactant content organic phase,d) the substantially surfactant-free aqueous phase is separated off and replaced by additional aqueous solution of phenols. The mixture then present can be fed again to the reaction.

    摘要翻译： 一种用于在氢氧化钠存在下通过烷基卤在酚烷基化中形成的含非离子表面活性剂的微乳液反应混合物的处理方法。 所述混合物具有作为水相存在的一个反应产物和作为水不混溶相存在的另外的反应产物，并且反应混合物以微乳液形式获得。 所述反应混合物通过以下方法处理：a）使该微乳液的温度降低20至50K，从而形成具有高表面活性剂含量的水相和基本上不含表面活性剂的有机相，b）分离基本上无表面活性剂的有机物 用烷基卤的有机溶液形成和替代所述不含表面活性剂的有机相。 在更换基本不含表面活性剂的相后，c）将如此处理的反应混合物的温度升高10至80K，从而形成基本上不含表面活性剂的水相和高表面活性剂含量的有机相，d）基本上表面活性剂 分离出无水相并用另外的酚类水溶液代替。 然后存在的混合物可以再次进料到反应中。

    Process for through-hole plating of two-layer printed circuit boards and multilayers
    6.
    发明授权
    Process for through-hole plating of two-layer printed circuit boards and multilayers 失效
    双层印刷电路板和多层通孔电镀工艺

    公开(公告)号：US5575898A

    公开(公告)日：1996-11-19

    申请号：US530998

    申请日：1995-09-20

    申请人： Gerhard-Dieter Wolf ,  Friedrich Jonas ,  Reinhard Schomacker

    发明人： Gerhard-Dieter Wolf ,  Friedrich Jonas ,  Reinhard Schomacker

    IPC分类号： C25D5/54 ,  C25D7/00 ,  H05K3/42 ,  H05K3/46 ,  C25D5/02 ,  C25D5/56

    CPC分类号： C25D5/54 ,  H05K3/424 ,  H05K2201/0329 ,  H05K2203/0796 ,  H05K3/427

    摘要： Process for through-hole plating of printed circuit boards and multilayers by applying a conductive layer of a polythiophene onto the walls of the through-holes and electrodeposition of copper onto the walls of the through-holes, characterized in that a microemulsion of a monomeric thiophene of the formula (I) is used to form the conductive polythiophene layer, ##STR1## in which X denotes oxygen or a single bond,R.sub.1 and R.sub.2 mutually independently denote hydrogen or a C.sub.1 -C.sub.4 alkyl group or together form an optionally substituted C.sub.1 -C.sub.4 alkylene residue or a 1,2-cyclohexylene residue,and in that the conductive layer of polythiophene is produced on the walls of the through-holes by subsequent or simultaneous treatment with acid and, finally, a metal is electro-deposited on this conductive base.

    摘要翻译： 通过在通孔的壁上施加聚噻吩的导电层并将铜电沉积在通孔的壁上，印刷电路板和多层的通孔电镀工艺，其特征在于单体噻吩的微乳液 （I）的化合物用于形成导电性聚噻吩层，其中X表示氧或单键，R1和R2相互独立地表示氢或C1-C4烷基，或一起形成任选地 取代的C1-C4亚烷基残基或1,2-亚环己基残基，并且通过随后或同时用酸处理，在通孔的壁上产生聚噻吩的导电层，最后将金属电沉积 在这个导电基底上。