The invention discloses a dicarboxyl diphenylsulfone containing sulfonate group belonging to the technical field of chemical industry and a preparation method thereof.
本发明公开了一种化工技术领域的含磺酸盐基的二羧基二苯砜及其制备方 法。
2
In order to purify product from other substance, the solid mixtures are usually comminuted and soaked out by diphenylsulfone, and then recover the solvent by distillation and drying.