C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 63/00 (2006.01)
Patent
CA 2155609
There is disclosed a water compatible polyamine-epoxy adduct formed by the reaction of a polyamine with a mixture of a monoepoxide and polyepoxides, the monoepoxide being added in an amount to react with about 10 to 50% of the primary amino groups in said polyamine and the polyepoxides being added in an amount to react with from about 35 to 65% of the remaining primary amino groups. This invention relates to a water dispersible blend resin as an amine salt and comprises a water compatible polyamine-epoxy adduct and a resin compatible polyamine-epoxy adduct wherein the water compatible polyamine-epoxy adduct is as described above and the resin compatible polyamine-epoxy adduct is formed by reacting a polyamine with an aromatic monoepoxide, said aromatic monoepoxide reacted in an amount to provide from about 0.4 to 1 equivalents epoxide per primary amino group. The invention also pertains to a two component water epoxy coating composition comprising anaqueous dispersion of a blend of a water compatible polyamine-epoxy adduct, a resin compatible-polyamine-epoxy adduct and a polyepoxide resin emulsified therewith wherein the amount of the polyepoxide resin in the coating composition is such that there is from about 0.5 to 1.5 equivalents epoxide per active hydrogen equivalent.
Cornforth David Arthur
Darwen Stuart Paul
Air Products And Chemicals Inc.
Mcfadden Fincham
LandOfFree
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