Aqueous polymer emulsions useful as wallcovering prepaste adhesives

摘要

A stable aqueous emulsion comprising: (1) between about 20 and about 50% weight percent synthetic polymer solids, said solids comprising a copolymer or a terpolymer derived from: (a) between about 60 and about 90 mole percent of a vinyl ester, optionally including vinyl alcohol derived from said vinyl ester; (b) between about 10 and about 40 mole percent of one or more water soluble monomers; and (c) between about 0 and about 10 mole percent of an alkyl acrylate or alkyl methacrylate wherein alkyl represents an alkyl group containing between 1 and 20 carbon atoms; (2) between about 0.5 and about 5.0 weight percent of one or more surfactants or protective colloids; and (3) the balance water; wherein said aqueous emulsion has a viscosity of less than 1000 cps at 25 DEG C. and wherein said emulsion can provide adhesive properties and a process for producing the emulsion is provided. The emulsion is particularly suited for use as a wallpaper prepaste adhesive.