2-Propenoic acid, polymer with butyl 2-propenoate, ethenylbenzene, 2-hydroxyethyl 2-propenoate and 2-propenenitrile 35769-72-3 Poly(acrylic acid, acrylic acid, butyl ester, acrylic acid, 2-hydroxyethyl ester, acrylonitrile, styrene)