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