公开(公告)号：US5112892A

公开(公告)日：1992-05-12

申请号：US578294

申请日：1990-09-06

申请人： Peter T. Cardew ,  David R. Holmes ,  John W. Smith

发明人： Peter T. Cardew ,  David R. Holmes ,  John W. Smith

IPC分类号： C08J5/18 ,  B01D67/00 ,  B01D71/68 ,  B01D71/82 ,  C08J3/09 ,  C08L81/00 ,  C08L81/06

CPC分类号： C08J3/091 ,  B01D67/0011 ,  B01D67/0013 ,  B01D69/02 ,  B01D71/68 ,  B01D2325/022 ,  C08J2381/06

摘要： A polymer solution contains a sulphonated polyarylethersulphone in a solvent mixture containing at least three components, where the solvent mixture has a delta-H in the range from 3 to 8.5; a delta-P in the range from 4 to 8 and a delta-D in the range 7.2 to 9.5 and each component of the solvent mixture is a liquid or low melting solid which is a non-solvent or poor solvent for the sulphonated polyarylethersulphone, and at least one of the components satisfies at least one of the conditions:a) said component has a delta-D of less than 8 when the value of delta-P is not more than 3; andb) said component has a delta-H of greater than 3 when the value of delta-P is at least 8.5; andc) said component has a delta-H of less than 8 when it contains at least one hydroxylic group; andd) said component is free of hydroxylic groups and has a delta-P which is greater than 3 and less than 8.5.The solution can be used for the production of membranes suitable for use in reverse osmosis applications.

摘要翻译： 聚合物溶液在含有至少三种组分的溶剂混合物中含有磺化的聚芳醚砜，其中溶剂混合物的δ-H在3至8.5的范围内; δ-P在4至8的范围内，Δ-D在7.2至9.5的范围内，溶剂混合物的每个组分是液体或低熔点固体，其是用于磺化聚芳基醚砜的非溶剂或不良溶剂， 并且所述组分中的至少一个满足以下条件中的至少一个：a）当Δ-P的值不大于3时，所述组分的δ-D小于8; 和b）当Δ-P的值至少为8.5时，所述组分的Δ-H大于3; 和c）当其含有至少一个羟基时，所述组分的δ-H小于8; 和d）所述组分不含羟基并且具有大于3且小于8.5的δ-P。 该溶液可用于生产适用于反渗透应用的膜。