prov:value
| - X in formula I as an aliphatic radical can also be a polysiloxane radical of the formula ##STR8## in which R18 and R17 are C1 -C6 -alkyl, in particular methyl, or phenyl, R19 is cycloalkylene, for example cyclohexylene, and in particular C1 -C12 -, especially C1 -C6 -alkylene, for example 1,3-propylene or 1,4-butylene, and x is a rational number of at least 1, for example 1 to 100, preferably 1 to
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