C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 83/00 (2006.01) C08G 77/02 (2006.01) C08K 9/06 (2006.01) C09C 1/00 (2006.01) C09C 1/30 (2006.01) C09C 1/36 (2006.01) C09C 1/40 (2006.01) C09C 3/08 (2006.01)
Patent
CA 2227557
A hydroxylated inorganic oxide carrier is functionalised by grafting one or more types of polyhydrogenosiloxane oils with 10 - 200 siloxane units, said grafting being provided by the covalent bonds formed by a dehydrogenocondensation reaction between Si-H groupings of the polyhydrogenosiloxane oil and free hydroxyls of the hydroxylated carrier, and by the hydrogen bonds between the hydroxyls of the hydroxylated carrier and oxygen atoms of the polyhydrogenosiloxane oil, which has free Si-H groupings.
Le support d'oxyde inorganique hydroxylé est fonctionnalisé par greffage d'au moins un type d'huile polyhydrogénosiloxanique ayant de 10 à 200 motifs siloxaniques, le greffage étant assuré d'une part par des liaisons covalentes formées à partir d'une réaction de déshydrogénocondensation entre des groupements Si-H de l'huile polyhydrogénosiloxanique et des hydroxyles libres du support hydroxylé et d'autre part par des liaisons hydrogènes entre hydroxyles du support hydroxylé et atomes d'oxygène de l'huile polyhydrogénosiloxanique, qui présente des groupements Si-H libres.
Fischer Christian
Mignani Gerard
Priou Christian
Rhodia Chimie
Robic
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