| http://www.w3.org/ns/prov#value | - -hydrocarbonoxy radical, preferably a C.sub.4 -C.sub.20 -hydrocarbonoxy radical, such as a C.sub.8 -, C.sub.10 -, C.sub.12 -, C.sub.13 -(for example isotridecyl),C.sub.14 -,C.sub.16 -, C.sub.18 -, C.sub.20 -alkoxy radical, -alkenyloxy radical or
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