Patent ID: 6376579
Filing Date: 2002-04-23
Classification: C04B,C08G,C09D

Abstract:
An epoxy primer for concrete, said primer being curable at a temperature below 55Â° F.; said primer comprising an admixture of two parts, Component A and Component B, wherein Component A comprises a crystallization resistant reactive epoxy resin mixture and Component B comprises a curing agent mixture; said primer bonding to concrete at 200 psi or greater, when measured by ASTM D 4541;wherein Component A comprises the following ingredients:(a) from 75 to 115 parts by weight of a compound containing at least one glycidyl ether epoxide group; (b) from 1 to 10 parts by weight of a Michael's Addition agent; (c) from 0 to 1 part by weight of a color concentrate; (d) from 0 to 10 parts by weight of filler and/or thickener materials; and (e) from 1 to 10 parts by weight of a diluent; and wherein Component B comprises the following ingredients:(aa) from 65 to 105 parts by weight of a Mannich Base curing agent; (bb) from 12 to 18 parts by weight of an amine-based hardener and accelerator; (cc) from 0 to 1 part by weight of a color concentrate; (dd) from 4 to 6 parts by weight of one or more filler and/or thickener materials; and (ee) from 4 to 6 parts by weight of a diluent.