二苯酮四酸二酐-二异氰酸甲苯酯-二异氰酸二苯甲烷酯
benzophenonetetracarboxylic dianhydride-tolyene diisocyanate-diphenylmethane diisocyanate
聚酯-二异氰酸酯预聚物
polyester-diisocynate prepolymer
己二酸己二胺盐
hexamethylene diamine adipate
聚己二酸己二醇脂
poly hexamethylene adipate
聚己二酸己二醇酯二醇
polyhexamethylene adipate glycol