PROCESS FOR CHEMICAL MODIFICATION OF A POLYMERIC PART WITH A VIEW TO PROVIDING IT WITH OR IMPROVING ANTISTATIC PROPERTIES

摘要

The invention relates to a process for chemically modifying a polymeric part in order to give it antistatic properties or to improve them, comprising the following steps: a step of reaction of a polymeric part comprising at least one polymer comprising, as reactive groups, amine groups and / or hydroxyl groups, with a functional compound, also called the first compound, comprising at least one isocyanate group and at least a polymerizable group of the heterocyclic type, the isocyanate groups reacting covalently with all or part of the amine groups and / or hydroxyl groups of the polymer (s), whereby a polymeric part covalently bonded to residues of the polymer results. functional compound; - from the polymerizable groups of the heterocyclic type of the residues of the functional compound, a step of polymerization of a second compound comprising at least one polymerizable group of the heterocyclic type in the presence of a metal complex, said reaction step and said polymerization step being carried out in the presence of at least one supercritical fluid.