| http://www.w3.org/ns/prov#value | - y to ensure that the silane in question and/or the material of the external protective layer is permissible under cosmetics regulations.In addition to the mentioned silanes and silane mixtures, further organic-chemical modifying agents, such as for example substituted or unsubstituted alkyl radicals, polyethers, thioethers, siloxanes, etc. and mixtures thereof, can also be arranged at or on the su
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