Patent ID: 8648124

Claim:
Polyurethane casting compounds obtained by the reaction of 100 parts of at least one polyether polyol, 10-80 parts of at least one di- or polyisocyanate in the presence of 0.05-5 parts of the 0.5-10% solution of iron(III) acetylacetonate dissolved in at least one diamine selected from the group consisting of N,N′-bis(secbutylamino)diphenylmethane and those according to the formula NHR—R′—NHR″, where R and R″=methyl, ethyl, propyl; R and R″ can each be the same or different; and R′=C 1 -C 18 -alkylene-, C 6 -arylene-C 12 -arylene or C 7 -C 13 -alkyarylene, in the presence or absence of water and/or at least one chain-extending agent.