Transparent beads and their production method

Details Transparent beads and their production method Transparent beads and their production method

C - Chemistry, Metallurgy

03

C

49/14, 240/150

C03C 12/02 (2006.01)

Patent

CA 2285271

Transparent solid, fused microspheres are provided. In one embodiment, the microspheres contain alumina, zirconia, and silica in a total content of at least about 70 % by weight, based on the total weight of the solid, fused microspheres, wherein the total content of alumina and zirconia is greater than the content of silica, and further wherein the microspheres have an index of refraction of at least about 1.6 and are useful as lens elements.

On décrit des microsphères transparentes, pleines, noyées dans la masse. Dans une forme de réalisation, lesdites microsphères contiennent de l'alumine, du zirconium et de la silice pour une teneur totale d'au moins 70 % en poids relativement au poids total desdites microsphères. Ces microsphères présentent une teneur totale en alumine et en zirconium supérieure à leur teneur en silice. Elles présentent en outre un indice de réfraction au moins égal à environ 1,6 et conviennent comme éléments de lentilles.

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