Adhesives for Wet or Dry Adhesion

An adhesive composition comprising:

• a packaging material;
• and
• a pressure sensitive adhesive, the pressure sensitive adhesive comprising a (meth)acrylate polymer comprising the cured reaction product of a mixture comprising:
• 89-99.49% by weight of at least one first (meth)acrylate monomer;
• 0.5-5.0% by weight of a non-acid-functional, ethylenically unsaturated polar monomer;
• an acid-functional ethylenically unsaturated monomer, wherein the acid-functional ethylenically unsaturated monomer is present in an amount of up to 1% by weight;
• 0.01-5% by weight of a crosslinking moiety;
• and
• 0.01-1.0 parts by weight of at least one initiator based upon the total weight of curable components,
• wherein the first (meth)acrylate monomer comprises a secondary branched (meth)acrylate with a total of 10-17 carbon atoms or a mixture of secondary alkyl (meth)acrylate isomers with a total of 8-18 carbon atoms, and the adhesion of the adhesive article to a wet PROTEIN LEATHER surface is at least 50% of its adhesion to the same dry PROTEIN LEATHER surface;
• wherein the pressure sensitive adhesive is contained within the packaging material, and wherein the packaged pressure sensitive adhesive is hot melt processable.

A method of forming an adhesive article comprising:

• providing a substrate with a first major surface and a second major surface;
• providing a packaged adhesive composition;
• disposing the packaged adhesive composition in a hot melt mixing apparatus;
• hot melt mixing the packaged adhesive composition;
• dispensing the hot melt mixed adhesive composition onto at least a portion of the second major surface of the substrate surface to form a pressure sensitive adhesive layer;
• wherein the packaged adhesive composition comprises a (meth)acrylate-based polymer comprising the cured reaction product of a mixture comprising:
• 89-99.49% by weight of at least one first (meth)acrylate monomer;
• 0.5-5.0% by weight of a non-acid-functional, ethylenically unsaturated polar monomer;
• an acid-functional ethylenically unsaturated monomer, wherein the acid-functional ethylenically unsaturated monomer is present in an amount of up to 1% by weight;
• 0.01-2% by weight of a crosslinking moiety;
• and
• 0.01-1.0 parts by weight of at least one initiator based upon the total weight of curable components,
• wherein the first (meth)acrylate monomer comprises a secondary branched (meth)acrylate with a total of 10-17 carbon atoms or a mixture of secondary alkyl (meth)acrylate isomers with a total of 8-18 carbon atoms;
• and
• wherein the adhesion of the adhesive article to a wet PROTEIN LEATHER surface is at least 50% of its adhesion to the same dry PROTEIN LEATHER surface.