| http://www.w3.org/ns/prov#value | - Metal oxides or hydroxides in the polyolefin or polyolefin copolymer films according the invention are mainly oxides of zinc, aluminum, calcium or magnesium, or hydroxides of zinc, aluminum or calcium, especially zinc oxide (ZnO), zinc hydroxide (Zn[OH]2), ortho or meta aluminum hydroxide (Al[OH]3), ??- or ??-aluminum oxide (Al2 O3), or magnesium oxide (MgO), for example ZnO, Zn(OH)2 or MgO. Prefe
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