发明名称 |
Process for preparing 1-hydroxy-3-oxa-1,2,4,5-pentane tetracarboxylic acid/3,6-dioxa-1,2,4,5,7,8- octane hexacarboxylic acid mixtures |
摘要 |
There is disclosed an improved process for preparing 1-hydroxy-3-oxa-1,2,4,5-pentane tetracarboxylic acid and 3,6-dioxa-1,2,4,5,7,8-octane hexacarboxylic acid wherein the reaction mixture has a solids concentration of above about 60%, by weight whereby the amount of by-product fumarate is reduced.
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