| abstract |
If appropriate, isomeric mixtures and optionally in a mixture with up to 40% by weight, based on the total mixture, of other, optionally C 1 -C 12 -monoalkyl-substituted methylene bis (cyclohexyl isocyanate) isomers, in 2-, 4- or 6 Position C 1 -C 12 -alkyl-substituted 3,4'- and / or 3,2'-diaminodicyclohexylmethanes, a process for their preparation by known phosgenation of the diamines on which they are based, and their use as structural components in the production of polyurethane plastics the isocyanate polyaddition process. |