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公开(公告)号：US6056903A
公开(公告)日：2000-05-02
申请号：US246242
申请日：1999-02-08
CPC分类号： B01D67/009 , B01D67/0011 , B01D67/0016 , B01D71/68 , B01D2323/02 , B01D2323/08 , B01D2323/12 , B01D2325/38
摘要： A method for making a skinless essentially symmetrical hydrophobic polysulfone microporous membrane by the steps of (a) forming a casting solution containing (i) a dissolved polyethersulfone polymer, (ii) a solvent for the polyethersulfone polymer, and (iii) a lower aliphatic glycol; (b) coating a substrate with the casting composition; (c) exposing the coated substrate to atmospheric conditions; (d) passing the exposed coated substrate into a precipitation bath to precipitate the membrane, the precipitation bath containing a lower aliphatic glycol and water; (e) rinsing the membrane; and (f) drying the membrane.
摘要翻译： （a）形成含有（i）溶解的聚醚砜聚合物，（ii）聚醚砜聚合物的溶剂，和（iii）低级脂族二醇的浇铸溶液的步骤，制造无皮的基本上对称的疏水性聚砜微孔膜的方法 ; （b）用铸造组合物涂覆基材; （c）将涂覆的基底暴露于大气条件下; （d）将暴露的涂覆的基底通入沉淀浴中以沉淀膜，沉淀浴含有低级脂族二醇和水; （e）冲洗膜; 和（f）干燥膜。
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公开(公告)号：US06465050B2
公开(公告)日：2002-10-15
申请号：US09727629
申请日：2000-12-01
IPC分类号： C08J718
CPC分类号： B01D67/0088 , B01D67/0093 , B01D71/68 , B01D2323/30
摘要： A non-cracking hydrophilic polyether sulfone membrane is prepared by (a) directly coating the entire surface of a hydrophobic polyethersulfone membrane with an aqueous solution of a polyalkylene oxide polymer and at least one polyfunctional monomer, and (b) polymerizing the monomer over the entire surface of the membrane under conditions which cause the resulting polymer to attach to the polyethersulfone membrane and the polyethylene oxide to form a non-extractable surface which does not crack when the membrane is folded to form a pleated cartridge.
摘要翻译： 通过（a）用聚环氧烷聚合物和至少一种多官能单体的水溶液直接涂覆疏水性聚醚砜膜的整个表面来制备非裂解亲水性聚醚砜膜，和（b）在整个单体上聚合单体 在使所得聚合物附着到聚醚砜膜和聚环氧乙烷的条件下形成不能提取的表面，当膜被折叠以形成打褶的盒时，该表面不会破裂。
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公开(公告)号：US5006234A
公开(公告)日：1991-04-09
申请号：US496570
申请日：1990-03-20
摘要： A reverse osmosis water purification system has a feed water line and outlets for reject and product water. Instead of wasting the reject water by allowing it to flow to a drain, the reject water is returned to the water feed line downstream of the reverse osmosis system so that is can be used for other purposes. A section of the water feed line has a flow restrictor which estabishes a dynamic pressure drop. Feed water for the reverse osmosis system is taken off the feed line upstream of the restrictor and reject water is returned downstream of the restrictor, thereby reducing the water wastage due to the reverse osmosis process.
摘要翻译： 反渗透水净化系统具有给水管线和排污口和产品水出口。 废水通过允许其流向排水口而不是浪费废水，而是将废水返回到反渗透系统下游的供水管线，从而可以用于其他目的。 供水管线的一部分具有限流器，其确定动压降。 用于反渗透系统的给水从限流器上游的进料管线排出，排出的水返回到限流器的下游，从而减少由于反渗透过程引起的水分浪费。
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公开(公告)号：US06193077B1
公开(公告)日：2001-02-27
申请号：US09246400
申请日：1999-02-08
IPC分类号： B01D7126
CPC分类号： B01D67/0088 , B01D67/0093 , B01D71/68 , B01D2323/30
摘要： A non-cracking hydrophilic polyether sulfone membrane is prepared by (a) directly coating the entire surface of a hydrophobic polyethersulfone membrane with an aqueous solution of a polyalkylene oxide polymer and at least one polyfunctional monomer, and (b) polymerizing the monomer over the entire surface of the membrane under conditions which cause the resulting polymer to attach to the polyethersulfone membrane and the polyethylene oxide to form a non-extractable surface which does not crack when the membrane is folded to form a pleated cartridge.
摘要翻译： 通过（a）用聚环氧烷聚合物和至少一种多官能单体的水溶液直接涂覆疏水性聚醚砜膜的整个表面来制备非裂解亲水性聚醚砜膜，和（b）在整个单体上聚合单体 在使所得聚合物附着到聚醚砜膜和聚环氧乙烷的条件下形成不能提取的表面，当膜被折叠以形成打褶的筒时，该表面不会破裂。
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公开(公告)号：US5693231A
公开(公告)日：1997-12-02
申请号：US436631
申请日：1995-05-08
CPC分类号： B01D71/56
摘要： Polyamide (nylon) microporous membranes are prepared from a polyamide (nylon) polymer which contains aromatic rings, aliphatic carbon chains, and amide groups. The membranes exhibit improved long term performance characteristics. The membranes are preferably prepared from a polyamide polymer having the structure: ##STR1##
摘要翻译： 聚酰胺（尼龙）微孔膜由含有芳香环，脂族碳链和酰胺基的聚酰胺（尼龙）聚合物制备。 膜表现出改善的长期性能特征。 膜优选由具有以下结构的聚酰胺聚合物制备：
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