Modification of silica surfaces with phosphonic acids for use as fillers.

P. Hubert Mutin (1) , Dominique Labarre (2) , Stéphanie Lassiaz (1) , Anne Galarneau (1) , Daniel Brunel (1)

1 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 Centre de Recherches Rhodia

Silica surfaces are hydrophobized for use as fillers in silicones by treatment with a salt of metals having cations of at least divalent oxidn. state such as Al3+ in water and then treatment with RPO(OH)2 (R = hydrophobic chain) in the aq. medium.

Mots clés: silica hydrophobation; alumina deposit; alkyl-phosphonic acids

Domaines: Matériaux

P. Hubert Mutin, Dominique Labarre, Stéphanie Lassiaz, Anne Galarneau, Daniel Brunel. Modification of silica surfaces with phosphonic acids for use as fillers.. France, N° de brevet: FR 2891836. 2007. ⟨hal-00186531⟩