Method for treating surfaces containing si-h groups

Details Method for treating surfaces containing si-h groups Method for treating surfaces containing si-h groups

C - Chemistry, Metallurgy

08

G

C08G 77/12 (2006.01)

Patent

CA 2666919

The present invention relates to method for treating a substrate or a surface thereof bearing Si-H groups to confer to it a physical and/or biochemical surface-modified property, wherein it comprises at least a step consisting of exposing, within a liquid medium, said substrate or a surface thereof with at least a polymer, said polymer containing: at least three reactive sites able to attach to said substrate or said surface by reacting with Si-H groups and further creating covalent bonds, and at least a molecule or a part thereof able to confer said modified property to said substrate or said surface thereof, said step being carried out in efficient conditions to promote the covalent grafting of said polymer to said substrate or surface thereof and the molecular weight of said polymer being greater than 1000 g/mol.

La présente invention concerne un procédé de traitement d'un substrat, ou d'une surface de celui-ci, portant des groupes Si-H pour lui conférer une propriété physique et/ou biochimique modifiée en surface. Le procédé comporte au moins une étape consistant à exposer, dans un milieu liquide, ledit substrat, ou une surface de celui-ci, à au moins un polymère. Ledit polymère contient : au moins trois sites réactifs aptes à se fixer audit substrat ou à ladite surface par réaction avec des groupes Si-H et également par création de liaisons covalentes, et au moins une molécule, ou une partie de celle-ci, capable de conférer ladite propriété modifiée audit substrat ou à ladite surface de celui-ci. Ladite étape est exécutée dans des conditions efficaces pour favoriser le greffage covalent dudit polymère audit substrat ou à ladite surface de celui-ci et la masse moléculaire dudit polymère est supérieure à 1 000 g/mole.

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