Aqueous dispersion of sizing agent for paper and cardboard production contains amphiphilic copolymer of hydrophobic monomers and hydrophilic monomers with anionic groups

摘要

Aqueous size dispersions contains a dispersed reactive sizing agent and an anionic dispersant, in which the dispersant is an amphiphilic copolymer (I) with a mol. wt. (Mw) of 800-250,000 consisting of (a) 20-65 wt% hydrophobic monomers and (b) 35-80 wt% hydrophilic monomers with anionic groups.