A preferred base polymer is comprised of {HEAD ~ methacrylic acid} as {TAIL ~ the first comonomer and methyl methacrylate} as the second comonomer 
A preferred base polymer is comprised of { HEAD ~ methacrylic acid } as { TAIL ~ the first comonomer and methyl methacrylate } as the second comonomer
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH