A composition 19, wherein said {HEAD ~ water soluble monomers} are {TAIL ~ hydroxyalkyl vinyl ethers}, wherein alkyl has 2 to 4 carbon atoms 
are
A composition 19 , wherein said { HEAD ~ water soluble monomers } are { TAIL ~ hydroxyalkyl vinyl ethers } , wherein alkyl has 2 to 4 carbon atoms
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH