Low outgassing clean adhesive

1. A solvent-based pressure sensitive adhesive formulation comprising:

a polymer having a glass transition temperature from −40° C. to −10° C. and comprising the polymerized residues of:

a. a vinyl acetate monomer, wherein the vinyl acetate monomer is present at a level of 10 to 15 wt. %, based on the total weight of the polymer;

b. an acrylic ester monomer; and

c. 5 wt % to 40 wt %, based on the total weight of the polymer, of a monomer having a hydroxyl or amine functionality;

a solvent, wherein the solvent comprising 14 wt. % of toluene and 56 wt. % of ethyl acetate, based on the total weight of the solvent-based pressure sensitive adhesive formulation; and

a crosslinker;

wherein the polymer is present at a level of 15 to 45 wt. %, based on the total weight of the solvent-based pressure sensitive adhesive formulation and wherein the polymer has a polydispersity index from 1 to 10;

wherein the crosslinker is present at a level of 0.05 to 0.17 wt. %, based on the total weight of the solvent-based pressure sensitive adhesive formulation;

wherein the pressure sensitive adhesive formulation releases less than 2000 ng/cm 2 outgas as measured according to ASTM E 595 (1993); and

wherein the acrylic ester monomer is present at a level of 10 to 40 wt. %, based on the total weight of the polymer.

2. The solvent-based pressure sensitive adhesive formulation of claim 1 , wherein the polymer has at least one of: a weight average molecular weight from 25,000 to 400,000 g/mol or a number average molecular weight from 25,000 to 400,000 g/mol.

3. The solvent-based pressure sensitive adhesive formulation of claim 1 , wherein the polymer comprises less than 5 wt. % methacrylate monomers.

4. A label comprising:

a film and

a pressure sensitive adhesive layer formed of the solvent-based pressure sensitive adhesive formulation of claim 1 .

5. The label of claim 4 , wherein the pressure sensitive adhesive layer has a coating weight from 5 to 60 gsm.