Water dispersible polyamine-epoxy adduct and epoxy coating compo

Details Water dispersible polyamine-epoxy adduct and epoxy coating compo Water dispersible polyamine-epoxy adduct and epoxy coating compo

1992-06-03

1993-09-21

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

528 93, C08K 320

Patent

active

052469840

ABSTRACT:
This invention relates to 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 also contemplates 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 an aqueous 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 polyepoxide resin in the coating composition is such that there is from about 0.5 to 1.5 equivalents epoxide per active hydrogen equivalent.

REFERENCES:
patent: 3449281 (1969-06-01), Sullivan et al.
patent: 4246148 (1981-01-01), Shimp et al.
patent: 4501832 (1985-02-01), Albers et al.
patent: 4992516 (1991-02-01), Schipfer et al.
patent: 5087647 (1992-02-01), Flakus

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