公开(公告)号：US4176020A

公开(公告)日：1979-11-27

申请号：US887131

申请日：1978-03-16

申请人： Teruyuki Misumi ,  Susumu Furuhashi ,  Masaaki Shiga

发明人： Teruyuki Misumi ,  Susumu Furuhashi ,  Masaaki Shiga

IPC分类号： C07D211/70 ,  C25B3/10

CPC分类号： C07D211/70 ,  C25B3/105

摘要： A novel process for the preparation of an N,N'-disubstituted tetrahydro-4,4'-bipyridyl by electrolytic dimerization of the corresponding N-substituted pyridinium salt, characterized in that, using a system including an electrolytic cell having at least one diaphragm and an extractor disposed outside the electrolytic cell, the electrolytic dimerization is carried out while an aqueous catholyte containing the corresponding N-substituted pyridinium salt is circulated between the electrolytic cell and the extractor in which the product is extracted into an extraction solvent, followed by separation of the aqueous phase which alone is recycled into the electrolytic cell. According to the process of the present invention, the electrolytic dimerization can be continued stably for a long time, a high current efficiency can be attained and the desired product can be obtained in high yield.

摘要翻译： 通过相应的N-取代的吡啶鎓盐的电解二聚制备N，N'-二取代的四氢-4,4'-联吡啶的新方法，其特征在于，使用包括具有至少一个隔膜的电解池的系统 以及设置在电解槽的外部的提取器，在含有相应的N-取代的吡啶盐的含水阴极电解液在电解槽和萃取器之间循环的电解二聚反应，其中产物被萃取到提取溶剂中，然后分离 的单独的水相再循环到电解槽中。 根据本发明的方法，可以长时间稳定地继续进行电解二聚，可以获得高的电流效率，可以高产率获得所需的产物。

公开(公告)号：US06527954B1

公开(公告)日：2003-03-04

申请号：US09717710

申请日：2000-11-21

申请人： Susumu Furuhashi

发明人： Susumu Furuhashi

IPC分类号： B01D2917

CPC分类号： B01D39/16 ,  B01D46/522 ,  B01D61/00 ,  B01D63/14 ,  B01D2275/00 ,  B01D2275/206

摘要： A filter element to be installed into a housing to constitute a filter assembly for separation of solids in a fluid is constructed from one or more baggy filtering mediums made of porous membrane or non-woven fabric of synthetic plastic, passageway material arranged along the inside and/or outside surface of the baggy filtering mediums depending on necessity and a sleeve joining with each opening of the baggy filtering medium(s). By adopting the baggy filtering mediums, it is possible to superimpose them into a filter element in a state of layers, and by adopting one baggy filtering medium folded repeatedly back and forth upon itself, it is also possible to construct another filter element in a state of layers, so as to fit to various filtration spaces in the housing. Accordingly, the space occupied by substantially parallel layered filtering medium(s) can be used densely for filtration, as the result a filtration area per unit filtration space is very large.

摘要翻译： 要安装到壳体中以构成用于分离流体中的固体的过滤器组件的过滤元件由一个或多个由合成塑料的多孔膜或无纺布制成的袋状过滤介质构成，沿着内部布置的通道材料 /或根据需要的袋状过滤介质的外表面和与袋状过滤介质的每个开口的套筒接合。 通过采用宽松的过滤介质，可以以层状将它们叠加到过滤元件中，并且通过采用自身反复折叠的一个袋状过滤介质，还可以构造为处于其中的另一过滤元件 的层，以便适合于壳体中的各种过滤空间。 因此，基本上平行的层状过滤介质占据的空间可以密集地用于过滤，结果是每单位过滤空间的过滤面积非常大。