The acrylic polymer is a copolymer of a monomer mixture comprising an alkyl acrylate having {TAIL ~ 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 {HEAD ~ 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 the mass ratio within the acrylic polymer between the copolymer portion and the introduced urethane group portions is within a range from 60:40 to 99:1 
The acrylic polymer is a copolymer of a monomer mixture comprising an alkyl acrylate having { TAIL ~ 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 { HEAD ~ 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 the mass ratio within the acrylic polymer between the copolymer portion and the introduced urethane group portions is within a range from 60:40 to 99:1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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