英文名称:2-Oxepanone polymer with 1,4-butanediol and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, 2-ethyl-1-hexanol-blocked; 2-Oxepanone, polymer with 1,4-butanediol and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, 2-ethyl-1-hexanol-blocked