Additive for hydraulically setting systems having improved processability

摘要

The invention relates to the use of a comb polymer for improving the processability of hydraulically setting compositions, wherein the comb polymer has ester, amide and/or ether groups on side chains bound to a main chain and the main chain has at least one acrylic acid unit A or a salt thereof and at least one methacrylic acid unit M or a salt thereof. The invention also provides processes for producing a hydraulically setting composition having longer processability.