Acrylic emulsions modified with functional (meth)acrylates to enable crosslinking
AssigneeMiwon North America Incorporated
InventorsJames E. Goodrich, Juan G. Nunez
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Abstract
The present invention provides a method for crosslinking an acrylic emulsion with a (meth)acrylate monomer or a (meth)acrylate oligomer including adding a base acrylic emulsion to a vessel, adding at least one (meth)acrylate crosslinker to the vessel, incorporating the at least one (meth)acrylate crosslinker into the base acrylic emulsion to create a two-phase system including water and a phase including crosslinkers of the at least one (meth)acrylate crosslinker inside acrylic emulsion particles of the base acrylic emulsion, applying the two-phase system to a surface, and curing the two-phase system to create a final system including a continuous film and crosslinked crosslinkers.
Claims18
A method for crosslinking an acrylic emulsion with a (meth)acrylate monomer or a (meth)acrylate oligomer comprising:
- adding a base acrylic emulsion to a vessel wherein the base acrylic emulsion includes at least one permanent counterion;
- adding at least one (meth)acrylate crosslinker to the vessel;
- incorporating the at least one (meth)acrylate crosslinker into the base acrylic emulsion through low shear mixing at 100 rpm to create a two-phase system including water and a phase including the at least one (meth)acrylate crosslinker inside acrylic emulsion particles of the base acrylic emulsion;
- applying the two-phase system to a surface;
- removing the water from the two-phase system to create a dried system including a continuous film including uncrosslinked crosslinkers;
- and
- curing the dried system to create a final system including a continuous film including crosslinked crosslinkers;
- wherein the viscosity of the two-phase system is lower than the viscosity of the base acrylic emulsion;
- and
- wherein the pH of the two-phase system changes less than 0.6 over 60 days.
A method for crosslinking an acrylic emulsion with a (meth)acrylate monomer or a (meth)acrylate oligomer comprising:
- adding a base acrylic emulsion to a vessel, wherein the base acrylic emulsion includes at least one permanent counterion;
- adding at least one (meth)acrylate crosslinker to the vessel;
- incorporating at least one (meth)acrylate crosslinker into the base acrylic emulsion through low shear mixing at 100 rpm to create a two-phase system including water and a phase including the at least one (meth)acrylate crosslinker inside acrylic emulsion particles of the base acrylic emulsion;
- applying the two-phase system to a surface;
- removing the water from the two-phase system to create a dried system including a continuous film including uncrosslinked crosslinkers;
- and
- curing the dried system to create a final system including a continuous film including crosslinked crosslinkers using ultraviolet (UV) energy, Light Emitting Diode (LED) energy, electron beam (EB) energy, a thermal crosslinking mechanism, and/or an oxidative crosslinking mechanism;
- wherein the viscosity of the two-phase system is lower than the viscosity of the base acrylic emulsion;
- and
- wherein the pH of the two-phase system changes less than 0.6 over 60 days.
A method for crosslinking an acrylic emulsion with a (meth)acrylate monomer or a (meth)acrylate oligomer comprising:
- adding a base acrylic emulsion to a vessel, wherein the base acrylic emulsion is anionic or cationic;
- neutralizing the base acrylic emulsion using at least one acid or at least one base;
- adding at least one (meth)acrylate crosslinker to the vessel;
- incorporating at least one (meth)acrylate crosslinker into the base acrylic emulsion through low shear mixing at 100 rpm to create a two-phase system including water and a phase including the at least one (meth)acrylate crosslinker inside acrylic emulsion particles of the base acrylic emulsion;
- applying the two-phase system to a surface;
- removing the water from the two-phase system to create a dried system including a continuous film including uncrosslinked crosslinkers;
- and
- curing the dried system to create a final system including a continuous film including crosslinked crosslinkers;
- wherein the viscosity of the two-phase system is lower than the viscosity of the base acrylic emulsion;
- and
- wherein the pH of the two-phase system changes less than 0.6 over 60 days.
Dependencies are inferred from the claim text.