Patent · US Active

Cationically stabilized aqueous silica dispersion, method for its production and its use

US7938902B2 · kind B2 · utility

2Cited by

3References

19Claims

0Family size

Assignee

Buhler Partec GmbH · DE

Inventors

Klaus Steingrover · Saarburg, DE
Frank Tabellion · Saarburg, DE
Steffen Pilotek · Saarburg, DE

Key dates

Filing date	Aug 30, 2007
Grant date	May 10, 2011
Priority date	—
Expiry date	Sep 17, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/40
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Cationically stablished aqueous silica dispersion, method for its production and its use. A method is described for the production of cationically stabilised silica in which silica is cationically stabilised in the form of an aqueous dispersion or a powder by mixing with an acid aminosilane solution. A cationically stabilised silica powder may be obtained by removing the solvent. The cationically stabilised silica dispersion obtained is highly storage stable. Mixing with organic binding agents such as PVA is possible without a significant increase in viscosity. The dispersions are particularly suitable for coating slips for printing media, such as inkjet paper, but also for the surface treatment of substrates, e.g. for the hard coating of plastics, or in parting compounds or abrasives and polishing agents.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.