摘要：

Partially fluorinated carboxylic acids, especially a partially fluorinated dicarboxylic acid, its acid chloride and partially fluorinated tetracarboxylic acids containing different amounts of fluorine and their dianhydrides are obtained by oxidation by air in acid medium and at high temperature in the presence of a catalyst mixture made up from at least two heavy metal compounds and bromide ions. The compounds are used for the preparation of polycondensates and linear amides and esters of polycarboxylic acids.

展开