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公开(公告)号：US4119580A
公开(公告)日：1978-10-10
申请号：US848785
申请日：1977-11-07
IPC分类号： B01J47/00 , C08F220/34 , B01D15/08
CPC分类号： B01J47/006
摘要： A method for forming agglomerated ion exchange particles in which finely divided synthetic resin coating particles are affixed to the surface of synthetic resin substrate particles. The surface of the coating particles have ion exchange sites with monovalent counterions (e.g., negatively charged) which are attracted to the ion exchange sites on the substrate particles. Multivalent ions (e.g., carbonate) of the same charge as such monovalent counterions are mixed into an aqueous disperson of the coating particles to displace the monovalent counterions thereby increasing the electrostatic charge density of the coating particles. Then, a slurry of the synthetic resin substrate particles is added dropwise to this dispersion which is mixed to form agglomerates by electrostatic attraction.
摘要翻译： 一种形成团聚的离子交换颗粒的方法，其中将细小的合成树脂涂料颗粒固定在合成树脂基材颗粒的表面上。 涂层颗粒的表面具有与基板颗粒上的离子交换位点吸引的具有一价抗衡离子（例如带负电荷）的离子交换位点。 将与这种一价抗衡离子相同电荷的多价离子（例如，碳酸盐）混合到涂层颗粒的水分散体中以置换一价抗衡离子，从而增加涂层颗粒的静电荷密度。 然后，将合成树脂基材颗粒的浆料滴加到该分散体中，该分散体通过静电吸引而混合以形成附聚物。
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公开(公告)号：US4214020A
公开(公告)日：1980-07-22
申请号：US852277
申请日：1977-11-17
CPC分类号： B01D69/08
摘要： Processes are disclosed for coating the exteriors of a plurality of hollow fibers which are suitable for fluid separations and which are assembled in the form of a bundle. The processes involve immersing the bundle of hollow fibers in a coating liquid containing material suitable for forming the coating and a substantial amount of solvent. A pressure drop from the exteriors to the interiors of the hollow fibers is provided to result in the formation of a deposit on the exteriors of the hollow fibers. The processes of this invention enable essentially the entire exterior surfaces of the hollow fibers to be coated without undue sticking of the hollow fibers or providing undesirably thick coatings on the hollow fibers in any portion of the bundle or on a portion of any of the hollow fibers.
摘要翻译： 公开了用于涂覆适合于流体分离并且以束的形式组装的多个中空纤维的外表的方法。 该方法包括将中空纤维束浸入含有适于形成涂层的材料的涂布液和大量的溶剂中。 提供从外部到中空纤维内部的压降，以便在中空纤维的外部形成沉积物。 本发明的方法能够基本上使中空纤维的整个外表面被涂覆而不会中空纤维的过度粘附，或者在中空纤维的任何部分或任何中空纤维的一部分上在中空纤维上提供不期望的厚涂层 。
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公开(公告)号：US4157960A
公开(公告)日：1979-06-12
申请号：US855852
申请日：1977-11-30
申请人： Richard C. Chang , Robert R. Ward
发明人： Richard C. Chang , Robert R. Ward
CPC分类号： B01D67/0016 , B01D67/0097 , B01D69/02 , B01D71/68
摘要： The selectivities of fluid separations of membranes having pores, in which the material of the membranes significantly effects the fluid separations, can be enhanced by the storage of the membranes in water. Suitable materials of the membranes for improvement in accordance with this invention are those which are not unduly susceptible to biodegradation. The membranes for improvement in accordance with this invention preferably have structures which are not unduly affected by drying and thus maintain beneficial mechanical and fluid separation properties after drying.
摘要翻译： 通过将膜储存在水中，可以提高具有孔的膜的流体分离的选择性，其中膜的材料显着影响流体分离。 根据本发明的用于改进的膜的合适材料是不会过度易受生物降解影响的材料。 根据本发明的用于改进的膜优选具有不受干燥过度影响的结构，因此在干燥后保持有益的机械和流体分离性能。
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