| http://www.w3.org/ns/prov#value | - silicon dioxide, alumosilicates, polysaccharides and derivatives thereof, e.g. hyaluronic acid, xanthan gum, hydroxypropylmethylcellulose, particularly advantageously from the group of polyacrylates, preferably a polyacrylate from the group of so-called Carbopols [from Noveon, formerly Goodrich], for example Carbopol grades 980, 981, 1382, 2984, 5984, ETD 2020, ETD 2050, Ultrez 10, in each case i
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