2-Propenamide, N-(hydroxymethyl)-, polymer with butyl 2-propenoate, ethyl 2-propenoate and 2-propenoic acid 2-Propenoic acid, butyl ester, polymer with ethyl 2-propenoate, N-(hydroxymethyl)-2-propenamide and 2-propenoic acid 2-Propenoic acid, ethyl ester, polymer with butyl 2-propenoate, N-(hydroxymethyl)-2-propenamide and 2-propenoic acid 2-Propenoic acid, polymer with butyl 2-propenoate, ethyl 2-propenoate and N-(hydroxymethyl)-2-propenamide Acrylamide, N-(hydroxymethyl)-, polymer with acrylic acid, butyl acrylate and ethyl acrylate Acrylic acid butyl ester, polymer with acrylic acid, ethyl acrylate and N-(hydroxymethyl)acrylamide Acrylic acid ethyl ester, polymer with acrylic acid, butyl acrylate and N-(hydroxymethyl)acrylamide Acrylic acid-butyl acrylate-ethyl acrylate-N-methylolacrylamide copolymer Acrylic acid-n-butyl acrylate-ethyl acrylate-N-methylolacrylamide copolymer Acrylic acid, polymer with butyl acrylate, ethyl acrylate and N-(hydroxymethyl)acrylamide Butyl acrylate-ethyl acrylate-acrylic acid-N-methylolacrylamide copolymer Ethyl acrylate-butyl acrylate-acrylic acid-N-methylolacrylamide copolymer Ethyl acrylate-butyl acrylate-acrylic acid-N-methylolacrylamide polymer Ethyl acrylate-butyl acrylate-N-methylolacrylamide-acrylic acid copolymer Ethyl acrylate-n-butyl acrylate-N-methylolacrylamide-acrylic acid copolymer Romacril LN 1 Romacril LN 2 Romacril LN 3