comb-type polymer, aqueous solution containing the same, use of a comb-type polymer, coating paste, and process for coating a sheet of paper

摘要

comb-type polymer, aqueous solution containing the same, use of a comb-type polymer, coating paste, and process for coating a sheet of paper. The present invention relates to comb-type polymers having a (meth) acrylic structure with hydroxy-polyalkylene glycol-type side chains, and which are used in papermaking coating paste compositions. These polymers lead to maintenance of water retention and viscosity under low shear gradient and very significantly decrease viscosity under high stress, which coatings with dry extract and / or high deposition velocity. The invention also relates to the coating pastes thus formulated and their use on the surface of a sheet of paper.