102667-59-4 2-Propenamide, N-(1,1-dimethylethyl)-, polymer with N-(1-methylethyl)-2-propenamide Nipaam-ntbam copolymer Poly(N-isopropyl acrylamide-N-tert-butyl acrylamide) copolymer Poly(N-isopropylacrylamide-N-tert-butylacrylamide)copolymer