Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1973-03-08
1976-05-04
Dean, R.
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
423339, C01B 3312
Patent
active
039549445
ABSTRACT:
This invention discloses a new form of wet precipitated silica which is characterised in terms of energy required to breakdown particles and a defined thickening effect. A multistage precipitation and flocculation production process is also disclosed in which primary silica particles are prepared and flocculated using an alkali metal salt solution and further silica precipitated in the presence of the salt, the pH of the mixture reduced and the silica isolated, purified carefully dried and optionally milled.
REFERENCES:
patent: 3325249 (1967-06-01), Burke, Jr.
patent: 3574135 (1971-04-01), Sampson et al.
patent: 3798174 (1974-03-01), Acker et al.
Aldcroft Derek
Barby Donald
Lovell Anthony Leonard
Quinn James Philip
Dean R.
Joseph Crosfield & Sons, Ltd.
Lewis Michael L.
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