the acrylic polymer is {HEAD ~ a copolymer} of a monomer mixture comprising {TAIL ~ an alkyl acrylate} having an alkyl group of 12 or more carbon atoms and a reactive acrylate having a functional group capable of reacting with an amino group, wherein the urethane group is introduced by a reaction between the functional group capable of reacting with an amino group, an amino alcohol and a polyvalent isocyanate compound, and 
comprising
the acrylic polymer is { HEAD ~ a copolymer } of a monomer mixture comprising { TAIL ~ an alkyl acrylate } having an alkyl group of 12 or more carbon atoms and a reactive acrylate having a functional group capable of reacting with an amino group , wherein the urethane group is introduced by a reaction between the functional group capable of reacting with an amino group , an amino alcohol and a polyvalent isocyanate compound , and
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH