| http://www.w3.org/ns/prov#value | - where R1???H or CH3 and R2???H or linear, branched or cyclic, saturated or unsaturated alkyl radicals having from 1 to 30, in particular from 4 to 18, carbon atoms and from 0 to 25% by weight of vinyl compounds (VII) which in favorable cases contain functional groups.
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