Perfluoro alkyl substituted anhydrides and polyacids as well as their derivatives, processes for their preparation and their use

摘要

This invention describes new perfluoroalkyl substituted esters, diesters and polyesters which contain at least one cyclic 5-membered anhydride group or two carboxy groups, as well as half amides and half esters thereof; their synthesis and their use as surface-active reactants in polycondensate resin systems.PPThe anhydrides are synthesized by reaction of perfluoroalkyl substituted alcohols or diols with dianhydrides or an anhydrides-acid chloride and have the general structure ##STR1## wherein: Q is the tetra-radical rest of a tri- or tetracarboxylic acid, which contains at least one 1,2-dicarboxy grouping, PPX is hydrogen or COOH,PPR.sub.f is a perfluoroalkyl or perfluoroalkoxy-perfluoroalkyl group of 4 to 18 carbon atoms,PPA IS 1 OR 2,PPA is hydrogen or ##STR2## wherein: M IS AN INTEGER FROM 0 TO 5, ANDPPR.sup. 3 is the residue of a R.sub.f substituted alcohol or diol.