Patent ID: 9731321
Date: 2017-08-15
CPC Classifications: B05D,C08F,C08L,C09D,C09J,Y10T

Claim:
1. A method of polymerising one or more ethylenically unsaturated monomers to form polymer at the surface of solid particulate material selected from inorganic pigments, organic pigments, magnetic material, waxes, bioactive agents, and combinations thereof, said method comprising: (a) providing a dispersion of said solid particulate material stabilised in a continuous liquid phase, wherein the dispersion is substantially absent of said one or more ethylenically unsaturated monomers, and wherein a RAFT agent is adsorbed onto the outermost surface of the particulate material and functions as a stabiliser for said solid particulate material; (b) thereafter adding to the dispersion said one or more ethylenically unsaturated monomers to be polymerised; and (c) polymerising said one or more ethylenically unsaturated monomers under the control of said RAFT agent to thereby form polymer at the surface of said solid particulate material.