Product containing silicon dioxide and a method for its preparation
AssigneeKemira Fibres Oy
InventorsAarto Paren, Pekka Vapaaoksa
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Abstract
A product contains silicon dioxide in the form of polysilicic acid in a supporting structure of cellulose. The polysilicic acid contains aluminum silicate sites. In the preparation of the product the cellulose and the silicon dioxide in the form of polysilicic acid are blended to obtain the product in solid form. The obtained blended product is modified with a compound containing aluminum, such as a solution aluminate, which causes the formation of aluminum silicate sites on the polysilicic acid. The cellulose used is viscose cellulose.
Claims8
A product containing silicon dioxide in the form of polysilicic acid in a cellulosic supporting structure, wherein the polysilicic acid contains aluminum silicate sites.
A method for the preparation of a product containing silicon dioxide in which the cellulose and the silicon dioxide in the form of polysilicic acid are blended to obtain a solid blended product, wherein the blended product obtained is modified with a compound containing aluminum which causes aluminum silicate sites to be formed on the polysilicic acid.
Dependencies are inferred from the claim text.