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US 11,958,980 B2Granted
Precipitated silica and process for its manufacture
AssigneeRhodia Operations
InventorsEmmanuelle Allain Najman, Pascaline Garbey, Cédric Feral-Martin, Laure Bertry, Laurent Guy, Thomas Chaussee, Stéphanie Croyeau
Life of this patent
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Abstract
A chemically modified precipitated silica characterised by the presence of alkyl moieties chemically bound to the silica and a process for its manufacture.
Claims21
A precipitated silica comprising alkyl moieties chemically bound to at least a portion of the Si atoms in the silica structure, characterised in that the resonance assigned to the methyl groups in said alkyl moieties in the 13C NMR spectrum of the precipitated silica is between −2.5 and −4.5 ppm.
Dependencies are inferred from the claim text.