Wet adhesion emulsions for paints and coating compositions

Details Wet adhesion emulsions for paints and coating compositions Wet adhesion emulsions for paints and coating compositions

C - Chemistry, Metallurgy

09

D

400/6408

C09D 5/02 (2006.01) C09D 131/04 (2006.01) C09D 133/00 (2006.01)

Patent

CA 1121077

WET ADHESIVE EMULSIONS FOR PAINTS AND COATING COMPOSITIONS ABSTRACT OF THE DISCLOSURE 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 Image wherein R is H or CH3, 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 -CH2-, as specifically represented by allyl urea. In other representative compounds the linking group L may be a polymethylene group -(CH2)n- or the chain may contain one or more oxy (ether), anino, 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-5eta-allylaminoethyl ethylene ures, allyloxy N-3-(1-ethylene ureido) ethyl acetamide, and allyl ester of N- ethyl-3-(l-ethylen 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.

320595

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