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US 2019/0375643 A1Published application
Increased particle loading by surface modification with polyethersilane
AssigneesEvonik Degussa GmbH, Evonik Corporation
InventorsZhifeng LI, Helmut Mack
Life of this patent
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Abstract
A modified colloidal silica is produced by mixing an effective amount of an alkyl silicate to form a colloidal silica, followed by treating the colloidal silica with an effective amount of a polyethersilane to form a modified colloidal silica.
Claims16
A modified colloidal silica produced by a process comprising:
- mixing an alkyl silicate to form a colloidal silica and
- treating the colloidal silica with an amount of a polyethersilane to form a modified colloidal silica.
A method for producing a modified colloidal silica, comprising:
- 1) preparing a mother liquid comprising an alkali catalyst and water;
- 2) adding an amount of a hydrolyzed liquid obtained by hydrolyzing an alkyl silicate to the mother liquid forming a colloidal silica;
- and
- 3) treating the colloidal silica with an amount of polyethersilane to form a modified colloidal silica.
1 more element
Dependencies are inferred from the claim text.