DISPERSIONS, PROCESS FOR PREPARING DISPERSIONS, INKS AND USES

摘要

A process for the preparation of a dispersion, comprising: dispersing a composition comprising a particulate solid, a liquid medium and a dispersant; wherein the dispersant is obtained by a process comprising at least the steps a) and b): a)co-polymerising a monomer composition comprising at least the components i) and ii) so as to form a phospho-ester functional polymer: i)a monomer having at least one phospho-ester group and two groups independently selected from hydroxyl, amino, thiol and hydrazo groups. ii)a diisocyanate; and b) hydrolysing at least some of the phospho-ester groups in the phospho- ester functional polymer so as to result in a dispersant having phosphorus containing anionic groups.