Silica obtained by precipitation, absorbing little water,...

C - Chemistry – Metallurgy – 09 – C

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Details

23/192, 400/7224

C09C 1/30 (2006.01) C01B 33/193 (2006.01) C08K 3/36 (2006.01)

Patent

CA 1311573

PRECIS DE LA DIVULGATION: L'invention concerne un procédé de préparation d'une silice à reprise en eau inférieure à 4,5%, caractérisé en ce qu'on fait subir à une première silice de précipitation un traitement thermique à une température comprise entre 700°C et 950°C pendant un temps compris entre une et quinze minutes. L'invention concerne également les silices obtenues de ce procédé. Ces silices sont particulièrement aptes à être utilisées comme charges renforçantes dans les silicones.

559720

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