| http://www.w3.org/ns/prov#value | - For some compositions, it is preferred that the majority of the particles of the particulate filler, i.e., at least 50%, preferably at least 60%, particularly at least 70%, especially at least 80%, have an average particle size of 0.01 to 0.09 ??m, preferably 0.02 to 0.08 ??m, particularly 0.03 to 0.07 ??m.
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