Pressure sensitive adhesive compositions

Abstract From the Canadian patent

Polymer emulsions useful as pressure-sensitive adhesives and having substantially Newtonian-like flow characteristics are disclosed. The emulsions may be prepared by a method that includes the steps of: combining, in an agitated reaction vessel an alkali-soluble or an alkali-, dispersible polymeric resin with water and an effective amount of an alkaline material for forming either a resin-containing alkaline solution or a resincontaining alkaline dispersion;, subjecting the agitated reaction vessel contents to an inert atmosphere and maintaining the agitated reaction vessel contents at a predetermined reaction temperature;, adding to the reaction agitated reaction vessel an emulsion …