Patent ID: 8703846
Filing Date: 2014-04-22
Classification: C04B,C08F

Abstract:
1. An aqueous formulation, comprising a hydraulic binder base and a) at least one comb-branched (meth)acrylic copolymer having at least one side-chain bearing at least one alkoxy- or hydroxy-polyalkylene glycol hydrophilic group, b) at least one comb-branched (meth)acrylic copolymer having at least one side-chain bearing at least one alkoxy- or hydroxy-polyalkylene glycol hydrophobic group, wherein said comb-branched copolymer a) comprises, expressed as a percentage by weight of each of its monomers, the sum of those percentages being equal to 100%: a1) 5% to 30% of (meth)acrylic acid, a2) 70% to 95% of at least one monomer having the formula (I): a3) 0% to 50% of at least one monomer different from monomers a1) and a2), and which is selected from the group consisting of an ester, an amide, an ether, a styrenic monomer, a cationic monomer, a sulfonated monomer, and a phosphated monomer.