C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/148 (2006.01) A61K 8/25 (2006.01) A61K 8/35 (2006.01) A61Q 17/04 (2006.01) C01B 33/141 (2006.01) C09D 11/00 (2006.01) C09D 17/00 (2006.01) C12H 1/044 (2006.01)
Patent
CA 2429821
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.
Cette invention concerne un procédé de préparation d'une suspension aqueuse de silice colloïdale anionique à pH neutre, qui est stable dans le temps et comporte des particules individualisées de silice colloïdale n'étant pas liées les unes aux autres par des liaisons de siloxane. Ces suspensions, qui présentent une stabilité au stockage élevée, sont particulièrement utiles pour la clarification de la bière, pour la préparation de formules cosmétiques, pour la production d'encre pour imprimantes, pour des peintures et pour des traitements anticorrosion.
Falk Uwe
Henning Torsten
Jacquinot Eric
Perard Marie-Laure
Az Electronic Materials Usa Corp.
Clariant Finance (bvi) Limited
Kirby Eades Gale Baker
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