申请人:OCCIDENTAL CHEMICAL CORPORATION
公开号:EP0398206A1
公开(公告)日:1990-11-22
Dioxydiphthalic anhydride is prepared by the reaction of dihalophthalic anhydride with an alkali metal compound, such as potassium carbonate. The compound is particularly useful as a monomer in the preparation of polyimides.
二羟基二
酞酸酐是由二卤代
苯酐与碱
金属化合物(如
碳酸钾)反应制备而成。这种化合物在制备聚
酰亚胺时作为单体特别有用。