申请人:Occidental Chemical Corporation
公开号:US05153335A1
公开(公告)日:1992-10-06
A method for the preparation of acyloxyphthalic anhydride or oxydiphthalic anhydride which comprises the reaction of a halophthalic anhydride with an alkali metal salt and at least a catalytically effective amount of an acid or acid derivative selected from the group consisting of benzoic acids, substituted benzoic acids, benzoic acid salts or substituted benzoic acid salts, and hydrolyzable benzoyl esters, and hydrolyzable substituted benzoyl esters, alkyl carboxylic acids, hydrolyzable esters of alkyl carboxylic acids, and salts of alkyl carboxylic acids. The process may be conducted without solvent, in a polar solvent or in a non-polar solvent using a phase transfer catalyst.
一种制备酰氧基邻苯二甲酸酐或氧基邻苯二甲酸酐的方法,包括将卤代邻苯二甲酸酐与碱金属盐以及至少一定量的从苯甲酸、取代苯甲酸、苯甲酸盐或取代苯甲酸盐、可水解的苯甲酰酯和可水解的取代苯甲酰酯、烷基羧酸、可水解的烷基羧酸酯和烷基羧酸盐组成的羧酸或羧酸衍生物中的催化有效量的酸或酸衍生物反应。该过程可以在无溶剂、极性溶剂或非极性溶剂中进行,使用相转移催化剂。