Wet adhesion emulsions of polymer resins systems employed in water-based

Abstract

Improved wet adhesion properties of water-based paints and coating compositions are obtained by incorporating into the polymeric resin emulsion systems employed in the formulation of such paints or coating compositions a monomeric compound having a terminal ureido group at one end thereof and a vinyl terminal group at the opposite end. Such incorporated monomeric compounds correspond to the general formula ##STR1## wherein R is H or CH.sub.3, U designates a cyclic or acyclic ureido or thioureido group and L designates a selected linking structure. In the simplest of such monomeric compounds, L is --CH.sub.2 --, as specifically represented by allyl urea. In other representative compounds the linking group L may be a polymethylene group - (CH.sub.2).sub.n --or the chain may contain one or more oxy (ether), amino, amido or carbonyl groups, provided that any carbonyl group (CO) present is not directly attached to U or to an ethylenic carbon atom nor is such ethylenic carbon directly attached to a nitrogen atom. Among preferred monomeric compounds imparting such improved wet adhesion are: N-Beta-allylaminoethyl ethylene urea, allyloxy-N-B-(1-ethylene ureido) ethyl acetamide, and allyl ester of N-ethyl-B-(1-ethylene ureido)-N-methyl carbamate. The polymer resin in the emulsion is one formed from one or more ethylenically unsaturated monomer compounds, such as acrylates and methacrylates, vinyl esters, vinyl chloride, mono- or di-ethylenic hydrocarbons; or copolymers, interpolymers or blends of these.