Primer compositions for adhesive bonding systems and coatings

摘要

The present invention relates to aqueous-based primer composition, comprising at least one thermosetting, self-emulsifying epoxy resin composition; at least one thermosetting, non-self-emulsifying resin composition; water; and at least one curative.

主权项

1. An aqueous-based primer composition, comprising:
a. at least one thermosetting, self-emulsifying epoxy resin composition obtained by reaction of (a) epoxy resin, (b) polyhydric phenol, and (c) an amine-epoxy adduct, wherein the amine-epoxy adduct is a reaction product of an aromatic polyepoxide with a polyoxyalkyleneamine; b. at least one thermosetting, non-self-emulsifying resin composition comprising a thermosetting, non-self-emulsifying epoxy based resin composition wherein the epoxy resin is selected from polyglycidyl derivatives of phenol-formaldehyde novolacs; c. water; and d. at least one curative; wherein a and b are present in amounts such that a weight ratio of the least one thermosetting, self-emulsifying epoxy resin composition to the at least one thermosetting, non-self-emulsifying resin composition is in a range of 32:5.3 to 60:40.