| 摘要 |
Powdery composition producible by contacting a powder containing at least one inorganic binder (0.01-10 wt.%) and a liquid component comprising at least one copolymer obtainable by polymerizing a monomer mixture, comprises: at least one ethylenically unsaturated monomer comprising carboxylic acid, carboxylic acid salt, carboxylic acid ester, carboxamide, carboxylic acid anhydride or carboxylic acid imide; and at least one ethylenically unsaturated monomer having a polyalkylene oxide residue. The liquid component comprises the copolymer (at least 1 wt.%) and organic solvent (at least 30 wt.%). Powdery composition producible by contacting a powder containing at least one inorganic binder (0.01-10 wt.%, based on the total mass of the composition) and a liquid component comprising at least one copolymer obtainable by polymerizing a monomer mixture, comprises (a) at least one ethylenically unsaturated monomer comprising carboxylic acid, carboxylic acid salt, carboxylic acid ester, carboxamide, carboxylic acid anhydride or carboxylic acid imide, and (b) at least one ethylenically unsaturated monomer having a polyalkylene oxide residue. The liquid component comprises (in wt.%): at least one copolymer (at least 1) and the organic solvent (at least 30). Independent claims are also included for: (1) the copolymer, which is obtainable by polymerizing the mixture of monomers comprising (in mole%): (i) at least one ethylenically unsaturated monomer (50-95), which comprises at least one carboxylic acid function and/or a carboxylic acid salt, and (ii) at least one monomer of formula (R 9>-C(H)=C(R 1> 0>)-(CH 2) 4-O-(C 2H 4O) h-(C eH 2eO) f-R 1> 1>) (III) (5-50); and (2) preparing the liquid component comprising the organic solvent, water (maximum of 30 wt.%), and the above obtained copolymer, comprising carrying out the polymerization of the monomers in an aqueous solvent to obtain a polymerization product, where the water content of the entire reaction mixture is greater than 10 wt.%, and removing the polymerization product using the organic solvent and water. R 9>-R 1> 1> : H or 1-5C aliphatic hydrocarbon; h : 0-150; C eH 2eO f : a random ethylene oxide- or propylene copolymer, where the molar proportion of propylene oxide-units is 10-30%, based on the sum of the ethylene oxide- and propylene oxide-units; f : 10-150; and e : 2 or 3. |
