Emulsion polymers, aqueous dispersions and processes for...

C - Chemistry – Metallurgy – 08 – F

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C08F 220/18 (2006.01)

Patent

CA 2701988

The present invention relates to an emulsion polymer comprising at least one (meth)acrylate segment which comprises 1% to 30% by weight of units derived from (meth)acrylates which in the alkyl radical have at least one double bond and 8 to 40 carbon atoms, 0.1 % to 10% by weight of units derived from monomers containing acid groups, and 50% to 98.9% by weight of units derived from (meth)acrylates having 1 to 6 carbon atoms in the alkyl radical, based in each case on the weight of the (meth)acrylate segment, the emulsion polymer having a particle radius of at least 50 nm.

La présente invention concerne un polymère en émulsion comprenant au moins un segment de (méth)acrylate qui comprend 1 à 30 % en poids d'unités qui sont dérivées de (méth)acrylates présentant au moins une liaison double et 8 à 40 atomes de carbone dans le groupe alkyle, 0,1 à 10 % en poids d'unités qui sont dérivées de monomères contenant des groupes acide et 50 à 98,9 % en poids d'unités qui sont dérivées de (méth)acrylates comportant 1 à 6 atomes de carbone dans le groupe alkyle, par rapport au poids du segment de (méth)acrylate. Ce polymère en émulsion présente un rayon de particule supérieur ou égal à 50 nm.

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