Ether-ester water reducible coating compositions

A curable coating composition comprising

• (A) the reaction product of (i) about 55 to about 90 weight percent of a glycidyl polyether of a dihydric phenol having a molecular weight of about 800 to about 2500;
• (ii) about 8 to about 44.1 weight percent of a polyethylene glycol having a molecular weight of about 300 to about 2000;
• and (iii) about 0.9 to about 2 weight percent of ortho phosphoric acid;
• (B) an aminoplast resin;
• and
• (C) water,
• wherein (B) is present in the amount of about 5 to about 40 weight percent based on the total weight of (A) and (B).

A process for preparing a water reducible coating composition which comprises reacting

• (A) about 55 to about 90 weight percent of a glycidyl polyether of a dihydric phenol having a molecular weight of about 800 to about 2500;
• (B) about 8 to about 44.1 weight percent of a polyethylene glycol having a molecular weight of about 300 to about 2000;
• and
• (C) about 0.9 to about 2 weight percent of ortho phosphoric wherein the reaction is conducted at a temperature of about 100.degree. C. to about 150.degree. C. in the presence of at least 0.6 weight percent, based on total weight of the reactants, of water.

Ovenable coated paperboard comprising paperboard stock first coated with a sealer coating of a vinyl acetate homopolymer or copolymer, followed by two coats of a cured composition comprising

• (A) the reaction product of
• (a) about 55 to 90 weight percent of a glycidyl polyether of a dihydric phenol having a molecular weight of about 800 to about 2500;
• (b) about 8 to about 44.1 weight percent of a polyethylene glycol having a molecular weight of about 300 to about 2000;
• and
• (c) about 0.9 to about 2 weight percent of ortho phosphoric acid;
• and
• (B) aminoplast resin wherein the total coating has a thickness of about 0.5 to about 1.5 mils.