Patent ID: 6653370
Filing Date: 2003-11-25
Classification: C08G,C09D,G01D

Abstract:
A water-dilutable, cationically stabilized epoxy resin ZYWX obtained by multistage reaction of modified epoxide amine adducts ZYW made by reacting aromatic or aliphatic epoxide compounds Z containing at least one epoxide group per molecule with aliphatic amines Y containing at least one primary or secondary amino group and ethylenically unsaturated carboxylic acids W which in turn are converted to epoxy resins ZYWX by at least partial neutralization by addition of acid, conversion into an aqueous dispersion and reaction with epoxide compounds X containing at least two epoxide groups per molecule, the amounts of the epoxide compound X and of the modified epoxy-amine adduct ZYW being chosen such that the number of reactive (in respect of addition reaction with an epoxide group) hydroxyl and/or amino groups in ZYW is at least equal to that of the epoxide groups in X.