METHOD OF PRODUCTION OF PRECIPITATED SILICEOUS FILLING AGENT Russian patent published in 2000 - IPC

Abstract RU 2156733 C1

FIELD: inorganic materials, chemical technology. SUBSTANCE: invention relates to methods of production of highly dispersed silicon dioxide by carbonic acid method. Sodium silicate solution is carbonized with carbon dioxide, suspension is neutralized with sulfuric acid, subjected for ion-exchange purification, filtrated, washed out, treated possibly with modifying reagent and dried. EFFECT: high quality of filling agent. 5 cl, 1 tbl, 2 ex

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RU 2 156 733 C1

Authors

Druzhbin G.A.

Karapira N.I.

Kuznetsov I.O.

Chudnovtsev V.I.

Dates

2000-09-27—Published

2000-03-30—Filed