2-Propenoic acid, 2-hydroxyethyl ester, polymer with α-hydro-ω-hydroxypoly( oxy-1,4-butanediyl), α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)] ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1), 4-hydroxy-N-(2-hydroxyethyl)-N-methylbutanamide