Patent ID: 9163103
Filing Date: 2015-10-20
Classification: C04B,C08F,C09K,E21B

Abstract:
1. An additive for aqueous construction systems which comprise a water-soluble, hydrophobically associating copolymer comprising at least (a) 0.1 to 20% by weight of at least one monoethylenically unsaturated, hydrophobically associating monomer (a), and (b) 25% by weight to 99.9% by weight of at least one monoethylenically unsaturated hydrophilic monomer (b) different therefrom, where the quantitative data are based in each case on the total amount of all of the monomers in the copolymer, wherein at least one of the monomers (a) is a monomer of the general formula (I) where the units —(—CH k: a number from 10 to 150, l: a number from 5 to 25, R R R R R