1-Eicosene, polymer with 1-ethenyl-2-pyrrolidinone 1-Ethenyl-2-pyrrolidinone, polymer with 1-eicosene 2-Pyrrolidinone, 1-ethenyl-, polymer with 1-eicosene 28211-18-9 53240-89-4 PVP/Eicosene copolymer