A hot melt pressure sensitive adhesive that is ultra violet light curable and comprises: an acrylic polymer that is a reaction product of a plurality of one or more acrylic monomers and a plurality of one or more photoinitiators, having a structure according to Formula I or II, as depicted below, wherein said acrylic polymer is crosslinkable through said photoinitiator groups upon exposure to ultra violet light, and optionally a tackifier; wherein: Ar is an aryl ketone moiety; X 1 is optional, if present it is one of: CH 2; a linear alkyl group; a branched alkyl group; a cycloalkyl group; a linear alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a branched alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; or a cycloalkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; X 2 is one of: a linear alkyl group; a branched alkyl group; a cycloalkyl group; a linear alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a branched alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; or a cycloalkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; and R is H or CH 3; and R 1 is one of: a linear alkyl group; a branched alkyl group; a cycloalkyl group; a linear alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof in any position; a branched alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a cycloalkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a polyether; a polycaprolactone; or a polycarbonate. Ar is an aryl ketone moiety; X 1 is optional, if present it is one of: CH 2; a linear alkyl group; a branched alkyl group; a cycloalkyl group; a linear alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a branched alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; or a cycloalkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; X 2 is one of: a linear alkyl group; a branched alkyl group; a cycloalkyl group; a linear alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a branched alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; or a cycloalkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; and R is H or CH 3; and R 1 is one of: a linear alkyl group; a branched alkyl group; a cycloalkyl group; a linear alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof in any position; a branched alkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a cycloalkyl group containing at least one of heteroatoms, a carbonyl, an ester, a carbonate, and mixtures thereof at any position; a polyether; a polycaprolactone; or a polycarbonate.