NEW-TYPE OF POLYVINYLSACCHARIDES WITH N,N-DIMETHYLBARBITURIC ACID AS A LINKER BETWEEN SUGAR AND STYRENE RESIDUE

A new type of polyvinylsaccharide with a C-C bond between the pendent sugar and the backbone was prepared. Without use of protecting groups N,N-dimethylbarbituric acid was used to link sugars directly to a poly merizable group. Homo- as well as copolymers were prepared by radical initiation. The barbiturate ring of the polymer undergoes a specific b ase-catalyzed ring cleavage to give highly water-soluble polymers. Als o in copolymers with less than 32 mol-% styrene residues water solubil ity is attained due to the newly formed diamide groups.