摘要
综述了2种合成3,3',4,4'-二苯甲酮四酸二酐的方法,即由邻二甲苯与甲醛经缩合后,用高锰酸钾氧化,再脱水得3,3',4,4'-二苯甲酮四酸二酐;第2种方法是用邻二甲苯与乙醛缩合,再分别用稀硝酸和浓硝酸分2步进行氧化,最后再高温脱水,从而得到较前一种方法产率更高的3,3',4,4'-二苯甲酮四酸二酐。同时还介绍了3,3',4,4'-二苯甲酮四酸二酐作为一种具有特殊结构的单体在合成一类具有特殊结构及性能的高分子材料中的应用。比如可以用来合成聚酰亚胺材料及光敏聚酰亚胺光刻胶。
Two methods to synthesize 3,3＇, 4,4＇-benzophenonetetracarboxylic dianhydride（BTDA） were summarized. The first method was： by the condensation of O-xylene and formaldehyde, and the oxidation by potassium permanganate, BTDA was got by the dehydration of 3,3＇,4,4 ＇-diphenyl ketone tetrcarboxylic acid. The second method was：by the condensation of O-xylene and acetaldehyde, 10%-20% nitric acid and 30%-50% nitric acid was used to carry on the oxidation respectively, and finally BTDA with high yield was got after the dehydration under high temperature. Moreover, the application of BTDA was introduced. Because of the special structure of BTDA, it could be used as a special monomer to synthesize polymer materials with distinctive structure and performance. For instance, it could be used to synthesize polyimide materials and photosensitive polyimide photoresist.
出处
《化工技术与开发》
CAS
2008年第9期38-42,共5页
Technology & Development of Chemical Industry
关键词
3
3'
4
4’-二苯甲酮四酸二酐
合成
应用
3,3 ＇, 4,4＇ -benzophenonetetracarboxylic
dianhydride
synthesis
application
