Aqueous solution containing copolymers with polyether side...

Details Aqueous solution containing copolymers with polyether side... Aqueous solution containing copolymers with polyether side...

C - Chemistry, Metallurgy

08

F

C08F 220/06 (2006.01) C08F 290/06 (2006.01)

Patent

CA 2715108

The invention relates to a process for the preparation of an aqueous solution comprising 30 to 95% by weight of water and 5 to 70% by weight of a copolymer dissolved in the water by free radical solution polymerizations of an isoprenol polyether derivative with an acrylic acid derivative, so that the copolymer has 20 to 45 mol% of an isoprenol polyether derivative structural unit and 55 to 80 mol% of an acrylic acid derivative structural unit. The aqueous solution is suitable as a superplasticizer for hydraulic binders.

L'invention concerne un procédé utilisé pour produire une solution aqueuse contenant entre 30 et 95% en poids d'eau et entre 5 et 70% en poids d'un copolymère dissous dans l'eau, par polymérisation en solution par voie radicalaire d'un dérivé d'isoprénolpolyéther avec un dérivé d'acide acrylique, de sorte que le copolymère présente entre 20 et 45 % mole d'une unité structurale de dérivé d'isoprénolpolyéther et entre 55 et 80% mole d'une unité structurale de dérivé d'acide acrylique. La solution aqueuse se prête à s'utiliser comme solvant pour des liants hydrauliques.

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