Removable pressure sensitive adhesives with plasticizer resistance properties

A removable, plasticizer resistant pressure sensitive adhesive comprising a crosslinked aqueous emulsion polymer comprising:

• (a) at least one hydrophobic monomer selected from an alkyl (meth)acrylate ester of an alcohol wherein the alkyl portion of the alcohol is linear or branched and contains at least 4 carbon atoms;
• (b) about 0.2 to about 10 wt. % of at least one hydrophilic monomer;
• and
• (c) about 1 to about 40 wt. % of one partially hydrophilic monomer selected from alkyl (meth)acrylate esters of an alcohol wherein the alkyl portion of the alcohol has 1 to 2 carbon atoms, N-vinyl-2-pyrrolidone, or mixtures thereof;
• and
• (d) an effective amount of a crosslinker selected from diallyl maleate or compounds represented by the formula:
• wherein R is selected from hydrogen, methyl, or ethyl, and R′ is selected from vinyl (—HC═CH2), allyl (—CH2—CH═CH2), or methallyl (—C(—CH2)═CH2);
• wherein said pressure sensitive adhesive does not contain a plasticizer.