| 摘要 |
The present invention relates to the use, in a method for producing a composition containing water and a hydraulic binder, of a rheologic additive characterised in that it comprises an emulsion of at least one non cross-linked copolymer containing: a) (meth)acrylic acid; b) alkyl (meth)acrylate with 1 to 25 carbon atoms; c) a monomer of the formula Ri-(R2O)1n-R3, in which R1 is a radical containing un unsaturated polymerisable function, R2O is an alkylene oxide group with 1 to 6 carbon atoms; m is an interger between 20 and 33, preferably 23 and 27, and most preferably equal to 25; R3 is a linear or branched alkyl chain with 28 to 33, preferably 30 to 33 and most preferably 32 carbon atoms. The invention also relates to the formulations thus obtained. |
