Redispersible waterborne pressure sensitive adhesive polymer.

摘要

This invention is an emulsion polymer for use as a redispersible pressure sensitive adhesive and a process for making the emulsion polymer. The polymer is the emulsion polymerization reaction product of one or more neutralized ethylenically unsaturated carboxylic acid monomers, one or more alkyl acrylates or methacrylates, and optionally, one or more vinyl containing monomers. The carboxylic acid functionality is either neutralized before initiation of polymerization, concurrently with the polymerization, or partially before and partially during polymerization. The polymerization occurs in the presence of a polyalkylene oxide plasticizer, having a molecular weight greater than 3000. In other embodiments, the invention is the water redispersible pressure sensitive adhesive made with the polymer, and a repulpable substrate made with the polymer.