Aqueous dispersion of epoxy resin and blend of epoxy resin-polyoxyalkylene amines

Epoxy-amine adducts comprising:

• (A-1) one or more epoxy-amine adducts obtained by the reaction of:
• (i) One or more epoxy compound(s) derived from aromatic or cycloaliphatic polyols or novolac resins with an epoxy functionality of from greater than 1 to 4 and an average epoxy equivalent weight of between 70 and 1000 g/eq;
• and
• (ii) one or more amine-terminated polyalkylene glycol(s) selected from the group consisting of polyoxyalkylene monoamines and mixtures of polyoxyalkylene monoamines with polyoxyalkylene diamines, said amine-terminated polyalkylene glycol(s) having an average amino functionality of from 0.5 to 1.5, an average molecular weight of from 700 to 5000 and an ethyleneoxide content of at least 60% by weight based on the total amount of polyalkylene glycol(s);
• wherein the equivalent ratio of amine-terminated polyalkylene glycol(s) to epoxy compound(s) is from 0.01:1 to 0.9:1;
• (A-2) one or more epoxy-amine adducts obtained by the reaction of:
• (i) One or more epoxy compound(s) derived from aliphatic polyols with an epoxy functionality of from greater than 1 to 4 and an average epoxy equivalent weight of between 70 and 6000 g/eq;
• and
• (ii) one or more amine-terminated polyalkylene glycol(s) selected from the group consisting of polyoxyalkylene monoamines and mixtures of polyoxyalkylene monoamines with polyoxyalkylene diamines, said amine-terminated polyalkylene glycol(s) having an average amino functionality of from 0.5 to 1.5, an average molecular weight of from 700 to 5000 and an ethyleneoxide content of at least 60% by weight based on the total amount of polyalkylene glycol(s);
• wherein the equivalent ratio of amine-terminated polyalkylene glycol(s) to epoxy compound(s) is from 0.01:1 to 0.9:1;
• the ratio of epoxy-amine adduct(s) (A-1) to epoxy-amine adduct(s) (A-2) being between 5:95 and 95:5;
• (B-1) polyglycidyl ethers of aromatic or cycloaliphatic polyols or novolac resins with an epoxy functionality of greater than 1 to 3.5 and an average epoxy equivalent weight of between 70 and 1000 g/eq;
• (B-2) optionally, polyglycidyl esters of aromatic or cycloaliphatic polycarboxylic acids with an epoxy functionality of greater than 1 to 3.5 and an average epoxy equivalent weight of between 70 and 1000 g/eq;
• and
• (C) optionally, at least one member selected from the group consisting of reactive thinners, pigments, fillers and additives other than reactive thinners, pigments and fillers.