 polyether and polycarbonate, Pc, glycols, for 4th diphylmethane disocyanate, 1-1-methylenibus, for isocyanate benzene, 1-4th butanedial, and poly, oxytetramethylene, glycol, Ptmg, and Ptmg-incorporating dimethyl groups, Ptgx, and methyl-side groups, Ptgl, were used to create polyurethane elastomers, PUEs. Poly, oxytetramethylene, glycol, Ptmg, and Ptmg-incorporating dimethyl groups, Ptgx, and methyl-side groups, Ptgl, were also used to create polycarbonate glycol, Pc, glycol, random copolymers with hexamethylene, C6, and tetramethylene, C4, units between carbonate groups with various composition ratios, C4 slash C6 equals 0 slash 100, 50-50ths, 70-30ths, and this article was authored by Sadahara Nakamura, Matsuhisa Furukawa, Kankojo, and others. We are article.tv, links in the description below.