| abstract |
Aqueous dispersions of particles of non-polymeric hydrophobic solids are stabilised against flocculation by means of a block or graft copolymer containing in the molecule a component which is solvated by the aqueous medium and another component of a specified degree of hydrophobicity which is associated with the solid particles. A limited degree of controlled and reversible flocculation of the particles can be introduced by the additional presence of a polymer which is soluble in the aqueous medium. |