公开(公告)号：US09587106B2

公开(公告)日：2017-03-07

申请号：US14486604

申请日：2014-09-15

Applicant: Stepan Company

Inventor： Gregory Paul Dado ,  Dale Lee Handlin, Jr. ,  Carl Lesley Willis

IPC: C08F8/36 ,  C08L53/02 ,  C08G81/02

CPC classification number: C08L53/025 ,  C08F8/36 ,  C08F2800/20 ,  C08G81/022 ,  C08L2201/56 ,  C08F297/044 ,  C08F8/04

Abstract: Improved methods for preparing sulfonated block polymers with acyl sulfates in non-halogenated aliphatic solvents are provided. The methods include the sulfonation of a precursor block polymer with an acyl sulfate in a reaction mixture further comprising at least one non-halogenated aliphatic solvent to form a sulfonated block polymer, wherein the initial concentration of the precursor block polymer is in the range of from about 0.1 wt % to a concentration that is below the limiting concentration of the precursor block polymer based on the total weight of the reaction mixture. A sulfonation degree of greater than about 1.0 milliequivalent sulfonic acid per gram sulfonated block polymer can be achieved substantially free of polymer precipitation and free of disabling gelation.

Abstract translation: 提供了在非卤代脂族溶剂中制备具有酰基硫酸盐的磺化嵌段聚合物的改进方法。 所述方法包括在还含有至少一种非卤代脂族溶剂的反应混合物中使用酰基硫酸酯磺化前体嵌段聚合物以形成磺化嵌段聚合物，其中前体嵌段聚合物的初始浓度范围为 约0.1重量％至低于前体嵌段聚合物的极限浓度的浓度，基于反应混合物的总重量。 可以实现大于约1.0毫当量磺酸/克磺化嵌段聚合物的磺化度，基本上不含聚合物沉淀并且没有失效的凝胶化。