2-Propenoic acid, polymer with 1-ethenyl-2-pyrrolidinone;acrylic acid-N-vinylpyrrolidone copolymer;VINYLPYRROLIDONE-ACRYLICACIDCOPOLYMER;1-ethenyl-2-pyrrolidinon polymer with 2-propenoic acid;1-vinylpyrrolidone/ acrylic acid copolymer
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