2-[Ethyl[4-[(4-nitrophenyl)azo]phenyl]amino]ethanol-methyl 2-methyl-2-propenoate copolymer 2-Propenoic acid, 2-methyl-, 2-[ethyl[4-[(4-nitrophenyl)azo]phenyl]amino]ethyl ester, polymer with methyl 2-methyl-2-propenoate 2-Propenoic acid, 2-methyl-, 2-[ethyl[4-[2-(4-nitrophenyl)diazenyl]phenyl]amino]ethyl ester, polymer with methyl 2-methyl-2-propenoate 2-Propenoic acid, 2-methyl-, methyl ester, polymer with 2-[ethyl[4-[(4-nitrophenyl)azo]phenyl]amino]ethyl 2-methyl-2-propenoate 4-(N-(2-Methacryloyloxyethyl)-N-ethylamino)-4′-nitroazobenzene-methyl methacrylate copolymer 4-[N-Ethyl-(2-methacryloyloxyethyl)amino]-4′-nitroazobenzene-methyl methacrylate copolymer 4′-[[2-(Methacryloyloxy)ethyl]ethylamino]-4-nitroazobenzene-methyl methacrylate copolymer 4′-[N-Ethyl-N-[(methacryloyloxy)ethyl]amino]-4-nitroazobenzene-methyl methacrylate copolymer Disperse Red 1 methacrylate-methyl methacrylate copolymer Disperse Red 1-methyl methacrylate copolymer copolymer Methyl 2-methyl-2-propenoate-2-[ethyl[4-[(4-nitrophenyl)azo]phenyl]amino]ethanol copolymer Methyl methacrylate-4-(N-(2-methacryloyloxyethyl)-N-ethylamino)-4′-nitroazobenzene copolymer Methyl methacrylate-4-[4-(nitrophenyl)azo]-N-ethyl-N-(2-methacryloyloxyethyl)aniline copolymer Methyl methacrylate-Disperse Red 1 copolymer Methyl methacrylate-Disperse Red 1 methacrylate copolymer Methyl methacrylate-Disperse Red 1 polymer Methyl methacrylate-N-ethyl-N-(methacryloxyethyl)-4′-amino-4-nitroazobenzene copolymer N-Ethyl-N-(methacryloxyethyl)-4′-amino-4-nitroazobenzene-methyl methacrylate copolymer PMD 36 PMMA-DR 1