| 摘要 |
FIELD: polymer production. ^ SUBSTANCE: liquid hardener for prepolymers with terminal isocyanate groups, used in molding-mediated manufacture of polyurethane elastomer products, is composed of, wt parts: 3,3'-dichloro-4.4'-diaminodiphenylmethane 3.2-13.2, polyetherpolyol having molecular weight 1000-2000 (as nonvolatile solvent) 84.8-95.9, N.N'-tetraoxypropylenediamine having molecular weight 290 - 0.7-2.9. ^ EFFECT: enabled manufacture of molded polyurethane elastomers with reduced rigidity level and high strength characteristics level. ^ 16 ex |
