wherein each R of each R-X unit is independently selected from the group consisting of polyethers and carboxylic acids, X is selected from the group consisting of aromatic diisocyanates and aliphatic diisocyanates, Y is a terminal group selected from the group consisting of acrylates and methacrylates and m is an integer of from 2 to 20. (Note that as used herein and in the claims each P and/or R