Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 1,6-diisocyanatohexane, dimethyl carbonate, 1,2-ethanediamine, 1,6-hexanediol, hydrazine, α-hydro-ω-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and sodium 2-[(2-aminoethyl)amino]ethanesulfonate (1:1), polyethylene-polypropylene glycol mono-Bu ether-blocked