Polymer mixture containing at least two different comb polymers

摘要

The present invention is a method for preparing a polymer mixture containing at least two different comb polymers each having a polymer backbone with side chains linked via ester groups and / or amide groups, comprising a) Providing and / or preparing a reaction mixture containing at least a first base polymer having acid groups and a second base polymer having acid groups, wherein the two base polymers are chemically different; b ) At least two different comb polymers by esterifying and / or amidating the two base polymers together with at least one single-sided hydroxyl-terminated side-chain compound and / or at least one single-sided amino-terminated side-chain compound. A method comprising the steps of: The invention further relates to polymer blends obtained by the process of the invention, to mineral binder compositions and to molded articles obtained therefrom. A further aspect relates to the use of the polymer mixture in a mineral binder composition.