2-Propenoic acid, polymer with 1-ethenyl-2-pyrrolidinone 2-Pyrrolidinone, 1-ethenyl-, polymer with 2-propenoic acid 28062-44-4 287399-96-6 Acrylic acid, polymer with 1-vinyl-2-pyrrolidinone (8CI) Acrylic acid, polymer with N-vinylpyrrolidone Acrylic acid-N-vinylpyrrolidone copolymer Acrylione NA 5 Vinylpyrrolidone-acrylic acid copolymer