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Abstract

A waterborne precursor polymer dispersion composition comprising the reaction product obtained by free-radical emulsion polymerization of a monomer mixture comprising: (A) at least one alkyl (meth)acrylate; and (B) at least one ethylenically unsaturated compound comprising: (Bi) at least one first functional group; wherein the at least one first functional group comprises at least one ethylenically unsaturated group; and (Bii) at least one second functional group; wherein the at least one second functional group comprises at least one functional group different than the ethylenically unsaturated group; wherein the second functional group is capable of reacting with a crosslinker component; and wherein the crosslinker component is not reactive with component (A) in free-radical polymerization; in the presence of: (C) an aqueous medium; and (D) at least one acid surfactant salt with pKaH from 2.6 to 7; a waterborne contact adhesive polymer dispersion composition including a mixture of: (I) the above waterborne precursor polymer dispersion composition and (II) a crosslinker compound for crosslinking with the at least one second functional group, component (Bii); a bonded article including at least two substrates adhered together with the above waterborne contact adhesive polymer dispersion composition; a process for preparing the above waterborne precursor polymer dispersion composition; a process for preparing the above waterborne contact adhesive composition; and a process of bonding two substrates together using the above waterborne contact adhesive composition to form a bonded article.

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