制备中间嵌段磺化之嵌段共聚物的水性乳液的方法;PROCESS FOR THE PREPARATION OF AN AQUEOUS EMULSION OF A MIDBLOCK SULFONATED BLOCK COPOLYMER

摘要

本发明提供一种水性乳液及一种用于制备包括至少两个非磺化聚合物末端嵌段A及至少一个磺化嵌段B之中间嵌段磺化之苯乙烯嵌段共聚物的水性乳液的方法，其包括以下步骤：提供含于非极性溶剂中之中间嵌段磺化之苯乙烯嵌段共聚物之胶合剂，其中该非极性溶剂系包括5至12个碳原子且沸点小于100℃之烃化合物或此类化合物之混合物，混合该胶合剂与共溶剂以形成混合物，视需要在乳化剂存在下用水乳化该混合物以产生乳液，及自该乳液移除该烃溶剂及视需要之该共溶剂以产生该水性乳液。该中间嵌段磺化之苯乙烯嵌段共聚物的所得乳液具有相对小粒径。 The present invention provides an aqueous emulsion and a process for preparing an aqueous emulsion of a midblock sulfonated styrenic block copolymer comprising at least two non-sulfonated polymer end-blocks A and at least one sulfonated block B comprising the steps of providing a cement of a midblock sulfonated styrenic block copolymer in a non-polar solvent wherein the non-polar solvent is a hydrocarbon compound comprising from 5 to 12 carbon atoms with a boiling point of less than 100℃