| abstract |
(57) [Summary]n(A) a relatively high molecular weight polyhydroxyl compound, and optionally further (b) a low molecular weight chain extender and / or a crosslinking agent, and (c) phenylene 1,4-diisocyanate (p-PDI), And at least one additional aromatic diisocyanate, i.e., an aromatic selected from toluene diisocyanate, diphenylmethane diisocyanate, 3,3'-dimethylbiphenyl diisocyanate, 1,2-diphenylethane diisocyanate. With an aliphatic diisocyanate and / or an aliphatic diisocyanate having 4 to 12 carbon atoms in the presence or absence of (d) a catalyst, (e) a blowing agent and (f) an additive ( Non-foamed and especially foamed polyurethane elastomers, characterized by the prepolymer method). |