Abstract: The present invention relates to a method for the production of an isotropic polymeric network comprising multifunctional molecules with a functionality of at least 5 by reacting in a solvent the multifunctional molecules with a coupling agent, wherein the coupling agent is present in an amount which is sufficient to couple the multifunctional molecules to at least 5 other multifunctional molecules and wherein the sum, ?, of the amounts of the multifunctional molecules and coupling agent per unit of volume, in kg/m3, is at least equal to the value as given by expression (I) in which a=0.2 d=the diameter of the multifunctional molecule, including the length of the bonds to the middle of atoms of the coupling agent to which it is attached. L=the length of the coupling agent, measured between the middle of the atoms that are connected to the multifunctional molecule.