C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/9046, 400/90
C08F 2/16 (2006.01) C08F 265/00 (2006.01) C08F 285/00 (2006.01) C09J 133/00 (2006.01) C09J 151/00 (2006.01)
Patent
CA 1338994
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 resin- containing 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 polymerization initiator and a predetermined time thereafter further adding to the agitated reaction vessel a first emulsion-polymerizable monomer mixture; a predetermined time thereafter adding a second emulsion- polymerization monomer mixture; thereafter, maintaining the agitated reaction vessel contents at the predetermined reaction temperature for a predetermined time period, for producing a polymer emulsion that can be utilized as a pressure-sensitive adhesive.
607956
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Johnson Polymer Llc
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