[EN] METHOD FOR PURIFICATION OF A BISPHENOL A DIANHYDRIDE COMPOSITION, BISPHENOL A DIANHYDRIDE COMPOSITION, POLY(ETHERIMIDE) DERIVED FROM THE BISPHENOL A DIANHYDRIDE COMPOSITION, AND ARTICLES PREPARED THEREFROM<br/>[FR] PROCÉDÉ DE PURIFICATION D'UNE COMPOSITION DE DIANHYDRIDE DE BISPHÉNOL A, COMPOSITION DE DIANHYDRIDE DE BISPHÉNOL A, POLY(ÉTHERIMIDE) DÉRIVÉ DE LA COMPOSITION DE DIANHYDRIDE DE BISPHÉNOL A, ET ARTICLES PRÉPARÉS À PARTIR DE CEUX-CI
申请人:SABIC GLOBAL TECHNOLOGIES BV
公开号:WO2020160215A1
公开(公告)日:2020-08-06
A method for the purification of a bisphenol A dianhydride composition includes contacting the bisphenol A dianhydride composition with a halogenated solvent to form a solution, and one or more of filtering the solution to remove ionic species; washing the solution with aqueous media to remove ionic species; crystallizing bisphenol A dianhydride from the solution to remove ionic species; and contacting the solution with an adsorbent to remove ionic species. A purified bisphenol A dianhydride composition is also described. The bisphenol A dianhydride composition can be used in the preparation of a poly(etherimide), and poly (etherimides) made from the bisphenol A dianhydride composition can be useful for forming a variety of articles.
一种用于纯化双酚A二酐组合物的方法包括将双酚A二酐组合物与卤代溶剂接触以形成溶液,以及通过以下一种或多种方法来过滤溶液以去除离子物种:过滤溶液以去除离子物种;用水介质洗涤溶液以去除离子物种;从溶液中结晶出双酚A二酐以去除离子物种;以及将溶液与吸附剂接触以去除离子物种。还描述了一种纯化的双酚A二酐组合物。双酚A二酐组合物可用于制备聚醚酰亚胺,由双酚A二酐组合物制成的聚醚酰亚胺可用于形成各种物品。