Treatment of minerals with alkylsilanes and alkylsilane...

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 9/06 (2006.01)

Patent

CA 2410242

The present invention relates to the silanization or surface treatment of minerals with alkylsilanes and alkylsilane copolymers. More specifically, the present invention relates to alkylsilane copolymers useful for surface treating pigments or fillers. The alkylsilane copolymers comprise at least two different monomers. The copolymers find particular utility for the surface treatment of white pigments, such as titanium dioxide, for improving the dispersibility and processibility of the pigments when compounded with a polymeric material, in particular, when compounded with polyolefins.

La présente invention concerne la silanisation ou le traitement de surface de substances minérales au moyen d'alkylsilanes et de copolymères d'alkylsilane. Plus spécifiquement, l'invention a pour objet des copolymères d'alkylsilane qui s'avèrent utiles pour le traitement de surface de pigments ou de substances de charge. Les copolymères d'alkylsilane comprennent au moins deux monomères différents. Les copolymères trouvent des applications notamment pour le traitement de surface de pigments blancs tels que le dioxyde de titane, afin d'améliorer la dispersibilité et l'aptitude au traitement des pigments lorsqu'ils sont mélangés à une substance polymère, en particulier lorsqu'ils sont mélangés à des polyoléfines.

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