Patent ID: 8796359
Filing Date: 2014-08-05
Classification: B82Y,C01P,C08F,C09B,C09C,Y10T

Abstract:
1. Polymer encapsulated solid particulate material that is 100 microns or less in size, said solid particulate material being encapsulated in a substantially uniform and continuous coating of polymer that has at least in part been formed under the control of a hydrophilic RAFT agent of general formula (4) and thereby has a reaction residue of the agent covalently bound thereto: where each X is independently a polymerised residue of a hydrophilic ethylenically unsaturated monomer selected from acrylic acid, methacrylic acid, hydroxyethyl methacrylate, hydroxypropyl methacrylate, acrylamide, methacrylamide, hydroxyethyl acrylate, N-methylacrylamide, dimethylaminoethyl methacrylate, itaconic acid, p-styrene carboxylic acids, p-styrene sulfonic acids, vinyl sulfonic acid, vinyl phosphonic acid, ethacrylic acid, alpha-chloroacrylic acid, crotonic acid, fumaric acid, citraconic acid, mesaconic acid and maleic acid, 2-(dimethyl amino) ethyl and propyl acrylates and methacrylates, and corresponding 3-(diethylamino) ethyl and propyl acrylates and methacrylates, n is an integer ranging from 1 to 100, R wherein Z, X, n and R