Process for the preparation of precipitated silicas having morph

Details Process for the preparation of precipitated silicas having morph Process for the preparation of precipitated silicas having morph

1977-06-22

1978-11-28

Cooper, Jack

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

106288B, C01B 3318

Patent

active

041276418

ABSTRACT:
A multistage precipitation and flocculation production process is disclosed in which primary silica particles are prepared and flocculated useing 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: 3235331 (1966-02-01), Nauroth et al.
patent: 3325249 (1967-06-01), Burke
patent: 3787561 (1974-01-01), Acker et al.
patent: 3859420 (1975-01-01), Laufer et al.
patent: 3977893 (1976-08-01), Wason

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