POLYMERIC COMPOSITION FOR RETENTION OF WATER AND ACTIVATION OF OPTICAL BRIGHTENER USED IN PAPER COLOUR COATING AND COATED PAPER AHEET OBTAINED BY USE OF SUCH COMPOSITION

摘要

Aqueous compositions liquid polymer ensuring the activation function of optical brighteners, the function of retention of water as well as the regulation function of the viscosity of the coating colours of paper containing a selection of at least one polyvinyl alcohol and a water-soluble thickener. Aqueous suspensions of mineral fillers, containing the said polymer compositions, as well as the coating colours of sleeps and the sheets of paper coated obtained.