PARTICLES CONTAINING REVERSIBLE COVALENT BONDS WHICH MAY BE SEQUENTIALLY FORMED AND BROKEN MULTIPLE TIMES

摘要

The present invention is directed to a particle-containing entity P-(A-- B-M)x wherein P is a solid particle attached to at least one polymer M through one or several reversible covalent bonds −A---B−, wherein A and B are functional groups respectively grafted to P and M thus forming the P-(A---B-M)x particle-containing entity with x being greater than or equal to 1, M has a degree of polymerization comprised between 5 and 1000, preferably ranging from 5 to 500, and wherein the reversible covalent bond −A---B− is chosen among an imine, a disulfide, a boronic ester or an acetal. The invention is also directed to a method for preparing this particle-containing entity, a method for sequentially forming and breaking the a reversible covalent bond −A---B− in said particle-containing entity P-(A--- B-M)x and dispersions comprising the same.