| abstract |
The invention relates to a polymer which can be obtained by the radical emulsion polymerization of at least one acid vinyl monomer or the salt thereof, at least one non-ionic vinyl monomer, in particular preferably a hydrophobic non-ionic vinyl monomer, at least one monomer containing an unsaturated terminal group and a polyoxyalkyene portion, at least one crosslinking monomer, optionally a protective colloid, and is characterized in that the polymerization is controlled such that the gelling effect occurs at least at intervals, which is achieved by the monomer addition (dosing time) taking place for 40 minutes, particularly preferably for 30 minutes. |