Marked polymers and synthesis thereof by reacting (trans) amidation after polymerization.

PREPARE POLYMER GROUP MARKED BY FLUORESCENT PENDING derivatizing (TRANS) amidation POLYMER BEARING PENDING PRE-EXISTING TYPE carbonyl groups. DESCRIBED POLYMERS BEARING GROUPS amides SLOPES, where nitrogen AMIDO is substituted with fluorescent moieties prepared by derivatization of (trans) amidation, AND POLYMERS BEARING HALVES NAFTALINO (sulfonated) PENDING REPLACED A NITROGEN amide bond with mer units of the formula V wherein R SUB 4 GB CNH SUB 2N n is zero or an integer from 1 to about 10, R SUB 1, R SUB 2 YR SUB 3 are independently hydrogen or other SUBSTITUTE hYDROGEN, where one of X SUB 1 YX SUB 2 is hydrogen and The other is a naphthalene (alkylene) having from 0 to 2 substituents sulphonic acid or salts thereof, or wherein X 1 YX SUB SUB 2 contain, separately or together, AT LEAST ONE GROUP FLUORESCENT ORGANIC.