Partially fluorinated carboxylic acids, derivatives thereof, process for preparing them and use

阅读量:

14

申请(专利)号:

EP88119071.4

申请日期:

19881117

公开/公告号:

EP0317884A2

公开/公告日期:

19890531

申请(专利权)人:

HOECHST AKTIENGESELLSCHAFT

国省代号:

DE

被引量:

1

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.

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