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