methods for preparing mineral matter particles, for preparing an aqueous suspension of mineral matter particles, aqueous composition, method for preparing a paper coating, use and method of preparing paper

摘要

The present invention relates to a method for producing mineral particles by grinding a mineral material in the presence of a specific anionic polymer. The polymer used is obtained by polymerization in the presence of sodium hypophosphite, dipropionate trithiocarbonate disodium and at least one radical generating compound. The invention also relates to an aqueous composition comprising particles of crushed mineral material and such a polymer, in particular a paper coating composition.