Water-thinnable mixtures of base-neutralized products of reaction of H.sub.3 PO.sub.4 with polyether epoxides and with other type epoxides

The process for preparing water-thinnable, base-salified reaction products of orthophosphoric acid and polyether epoxides which comprises:

• (I) reacting orthophosphoric acid with
• (1) a polyether epoxide resin E.sup.1 consisting essentially of molecules, each of which is of the formula ##STR47## wherein Q, independently, in each occurence, is ##STR48## n is an integer of from 0 to 40, r is zero, 1 or 2 and, independently in each occurrence;
• R.sup.1 is H, methyl or ethyl,
• R.sup.2 is --Br, --Cl or a C.sub.1 to C.sub.4 alkyl or alkenyl group,
• R.sup.3 is a C.sub.1 -C.sub.4 alkylene or alkenylene group, >C(CF.sub.3).sub.2, --CO, --SO.sub.2 --, --S--, --O-- or a valence bond, and
• R.sup.4 is --Br, --Cl or a C.sub.1 to C.sub.4 alkyl or alkenyl group,
• R.sup.20 is H or alkyl of 1 to 12 carbons;
• and
• (2) E.sup.2, a vicinal epoxide, other than one of formula (a) or (q), which has an EEW (epoxide equivalent weight) within the range of from about 90 to about 2000 and is convertible to a water-dispersible material by reaction with orthophosphoric acid and neutralization with a base,
• said reaction being carried out by contacting E.sup.1 and E.sup.2 with an orthophosphoric acid source material and from 0 to 25 molecular proportions of water per molecular proportion of H.sub.3 PO.sub.4 provided by said source material until the fraction of the oxirane groups in E.sup.1 and E.sup.2 converted is at least sufficient to render the resulting mixed product water-thinnable when contacted with a base, the amount of orthophosphoric acid included as such in said source material, or obtainable therefrom by hydrolysis, being such as to provide at least 0.3 P--OH groups per oxirane group, and the mole ratio of E.sup.1 to E.sup.2 epoxides being within the range of from about 0.1 to about 100, and
• (II) contacting the resulting mixed reaction product with at least enough of a base to render it water-thinnable.