Phosphorus-containing dicarboxylic acid (anhydride)-modified epoxy resin

摘要

The invention relates to a phosphorus-modified epoxy resin having an epoxide value of from 0.05 to 0.6 mol/100 g comprising structural units derived from (A) polyepoxide compounds having at least two epoxide groups per molecule and (B) phosphorus-containing dicarboxylic acids or phosphorus-containing carboxylic anhydrides, to a process for their preparation and to their use.