A copolymer as dispersant in a binder composition comprising an alkaline activating agent, wherein the activating agent is especially suitable for activation of a latently hydraulic and/or pozzolanic binder, wherein the copolymer has a polymer backbone and side chains bonded thereto and comprises at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, and wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.

A copolymer as dispersant in a binder composition comprising an alkaline activating agent, wherein the activating agent is especially suitable for activation of a latently hydraulic and/or pozzolanic binder, wherein the copolymer has a polymer backbone and side chains bonded thereto and comprises at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, and wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.

A copolymer, in particular a dispersant for hydraulically setting binder compositions, including a specific dicarboxylic acid based subunit and a specific polyalkylene glycol based subunit wherein the molar ratio of the dicarboxylic acid based subunit to the polyalkylene glycol based subunit is from 1.5-4.

A copolymer, in particular a dispersant for hydraulically setting binder compositions, including a specific dicarboxylic acid based subunit and a specific polyalkylene glycol based subunit wherein the molar ratio of the dicarboxylic acid based subunit to the polyalkylene glycol based subunit is from 1.5-4.

The invention relates to an aqueous composition comprising a copolymer obtained by a particular polymerization reaction using an anionic monomer comprising a polymerizable olefinic unsaturation and a carboxylic acid function and a monomer of formula (I):

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the invention also relates to this copolymer per se, and to a method for the preparation thereof and to the use thereof as a superplasticizer.

The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.

The present invention relates to an additive for hydraulically setting compositions comprising a colloidally disperse preparation comprising at least one salt of a polyvalent metal cation with at least one organic phosphonate and/or phosphate compound as anion and at least one polymeric dispersant comprising anionic and/or anionogenic groups and polyether side chains. The additive is especially suitable as slump retainer and for improving early strength.

The present invention relates to an additive for hydraulically setting compositions comprising a colloidally disperse preparation comprising at least one salt of a polyvalent metal cation with at least one organic phosphonate and/or phosphate compound as anion and at least one polymeric dispersant comprising anionic and/or anionogenic groups and polyether side chains. The additive is especially suitable as slump retainer and for improving early strength.

The present invention relates to copolymers that comprise salicylic acid derivative structural units and structural units having free polyether side chains. The copolymers are suitable to plasticize inorganic binder systems, construction chemical compositions comprising said copolymers and the use of said copolymers as a plasticizer for inorganic binder systems. Binder systems with a reduced amount of Portland cement comprising at least one copolymer of the invention provide a better liquefaction and processability as compared to said binder systems without a copolymer of the invention.

The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.