Graft copolymers, method for preparing same, compositions...

C - Chemistry – Metallurgy – 08 – F

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C08F 290/04 (2006.01) C08G 81/02 (2006.01) C09D 151/00 (2006.01)

Patent

CA 2243847

Graft copolymers with at least three chemically different blocks including one or more solid particle anchoring blocks, one or more hydrophobic blocks and one or more hydrophilic blocks, are disclosed. A method for preparing said copolymers, compositions containing same, the use thereof as a dispersant, as a stabilising agent for solid particles and/or as an emulsifier in an aqueous and/or organic medium, as well as the use of said copolymers for preparing pigment dispersions in aqueous and/or organic media.

L'invention concerne des copolymères greffés comprenant au moins trois séquences de nature chimique distincte, parmi lesquelles une ou plusieurs séquence(s) d'ancrage sur des particules solides, une ou plusieurs séquence(s) à caractère hydrophobe et une ou plusieurs séquence(s) à caractère hydrophile. L'invention concerne également leur procédé de préparation, les compositions les contenant, leur utilisation en tant qu'agent dispersant, stabilisant de particules solides et/ou émulsifiant dans un milieu aqueux et/ou organique, ainsi que leur utilisation pour la préparation de dispersions pigmentaires en milieu aqueux et/ou organique.

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