Patent · US Active

Process for the preparation of aqueous suspensions of anionic colloidal silica having a neutral pH and applications thereof

US7651719B2 · kind B2 · utility

0Cited by

17References

11Claims

0Family size

Assignee

AZ Electronic Materials USA Corp. · US

Inventors

Eric Jacquinot · Compiègne, FR
Marie-Laure Perard · Compiègne, FR
Uwe Falk · Könnern, DE
Torsten Henning · Bad Soden, DE

Key dates

Filing date	Oct 16, 2007
Grant date	Jan 26, 2010
Priority date	—
Expiry date	Oct 16, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12H1/0408
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The instant invention relates to a process for the preparation of an aqueous suspension of anionic colloidal silica having a neutral pH which is stable over time and comprises individualized particles of colloidal silica which are not bound to one another by siloxane bonds. The instant suspensions show high storage stability and are particularly useful for the clarification of beer, for the preparation of cosmetic formulations, for the production of ink for printers, for paints and for anticorrosive treatments.

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