| 摘要 |
A cellular polyurethane elastomer is produced by reacting: (a) an isocyanate component comprising methylenebis(phenyl isocyanate)(MDI), tolylene diisocyanate (TDI), or both thereof, with (b) compounds with at least two isocyanate-reactive hydrogen atoms and (c)4,4'-methylenebis (3-chloro-2,6- dialkylaniline)or a mixture of 4,4'-methylenebis (3-chloro-2,6- dialkylaniline)with one or more aromatic, aliphatic or cycloaliphatic diamines as chain extending agents, possibly together with an additional polyol and (d) a blowing agent, in the presence of usual catalysts and other optional additives. These cellular polyurethane elastomers are useful to produce moulded bodies which are subjected to high dynamic and thermal stresses.
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