B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
B01F 17/00 (2006.01) B01F 17/54 (2006.01)
Patent
CA 2408123
The invention concerns a surfactant formed by at least a particle with nanometric dimensions based on a metal oxide, hydroxide and/or oxy hydroxide, at the surface of which are bound hydrophobic organic chains, the bonds between said chains and said particle surface being non-homogeneously distributed on said surface, such that the resulting modified surface particle has an actual amphiphilic character. The invention also concerns emulsifying compositions comprising surface-modified particles with nanometric dimensions which can be said type of surfactants, and methods for preparing said emulsifying compositions.
La présente invention concerne un agent tensioactif formé d'au moins une particule de dimensions nanométriques à base d'un oxyde, hydroxyde et/ou oxy- hydroxyde métallique, à la surface de laquelle sont liées des chaînes organiques à caractère hydrophobe, les liaisons entre lesdites chaîne et la surface de ladite particule étant reparties de façon non homogène sur ladite surface, de telle sorte que la particule de surface ainsi modifiée possède un caractère amphiphile effectif. L'invention concerne également des compositions émulsifiantes comprenant des particules de dimensions nanométriques de surface modifiée qui peuvent être des agents tensioactifs du type précité, ainsi que le procédé de préparation de telles compositions émulsifiantes.
Rhodia Chimie
Robic
LandOfFree
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