POLYMERIC MATERIALS

摘要

An oligomer or polymer of the formula (I): Q1 - X1 - Y1 - Z - W wherein Q1represents a hydrophobic moiety, -X1- and -Y1- are independently each absent or represent a suitable linking group, -Z- represents a hydrophilic chain; and -W represents hydrogen or a group of the formula -Y2-X2-Q2, each of -X2, -Y2 and -Q2 being independently selected from the values for X1, Y1 and Q1 as hereinbefore defined.