A PROCESS FOR PREPARING PRECIPITATED SILICA

A process of preparing precipitated silica is disclosed. Said process comprises of reacting an aqueous solution of a metal silicate with a mineral acid in the presence of a surfactant solution comprising gelatin and C8-C20 sulfosuccinate blend, at a reaction temperature in a range of about 70 to 100...

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Bibliographic Details
Main Authors DEBABRATA, RAUTARAY, SUMANT, PHADTARE, PRABHAT KUMAR, PARIDA, MAYURA, LOLAGE
Format Patent
LanguageEnglish
Polish
Published 07.03.2022
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:A process of preparing precipitated silica is disclosed. Said process comprises of reacting an aqueous solution of a metal silicate with a mineral acid in the presence of a surfactant solution comprising gelatin and C8-C20 sulfosuccinate blend, at a reaction temperature in a range of about 70 to 100° C. with constant stirring such that a reaction mixture having a pH of about 10·0.3 is obtained; optionally, allowing the reaction mixture to age at a temperature in a range of about 70 to 100° C. for a time period in range of 10 to 100 minutes; adjusting the pH of the reaction mixture to about 4, followed by aging said mixture at a temperature in a range of about 70 to 100° C. for a time period in a range of 10 minutes to 2 hours; and recovering the precipitated silica from the reaction mixture.
Bibliography:Application Number: PL20160877883T