Imidyl- and isoimidyl-phthalic anhydrides, process for their manufacture and their use for curing epoxide resins

摘要

The invention relates to new imidyl compounds of the formula Ia and isoimidyl compounds of the formula Ib <IMAGE> (Ia) <IMAGE> (Ib) IN WHICH A denotes a divalent organic radical, especially an ethenylene, ethylene or propylene group. These compounds serve as curing agents for epoxide resins and give cured products with good mechanical and electrical properties.