Water dilutable epoxy coating compositions

Details Water dilutable epoxy coating compositions Water dilutable epoxy coating compositions

1981-09-23

1983-05-10

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525107, C08L 6302

Patent

active

043830595

ABSTRACT:
A coating composition comprises a water dilutable dispersion of (a) the reaction product of an epoxy resin with a primary or secondary amine and (b) a polymer containing free carboxyl groups. The epoxy resin and amine are preferably reacted in an organic solvent and a solution of the reaction product is mixed with a solution of the carboxyl-containing polymer (b) in an amount sufficient to provide an excess of free carboxyl groups over the amine groups in the epoxy resin reaction product (a). The coating composition is preferably applied to a substrate in the form of an aqueous dispersion in which (a) and (b) are held in stable dispersion by a base such as ammonia or an amine.

REFERENCES:
patent: 3969300 (1976-07-01), Nagata et al.
patent: 4028294 (1977-06-01), Brown et al.
patent: 4212781 (1980-07-01), Evans et al.
patent: 4246148 (1981-01-01), Shimp et al.

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