Suitable latex polymers in this invention include a wide range of homopolymers and copolymers of two or more ethylenically unsaturated monomers for example polymers containing units of vinyl acetate, C1-8 acrylates and methacrylates such as methyl methacrylate, ethyl acrylate and 2-ethylhexylacrylate, styrene, butadiene,ethylene, vinyl chloride, vinylidene chloride, and the vinyl alcohol ester of