| http://www.w3.org/ns/prov#value | - , preferably from 2to 4 isocyanate-reactive hydrogen atoms.In this case, too, it is possible to use mixtures of different compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight in the range of from 32 to 400.Examples of compounds such as these are ethylene glycol, 1,2- and 1,3-propylene glycol, 1,4- and 2,3-butylene glycol, 1,5-pentane diol, 1,6-hexane d
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