Abstract: The present invention relates to a stable storable composition for the chemical grafting of at least one filler comprising a hydroxyl group, onto a polymer. The composition according to the invention comprises at least one organic carboxylic acid comprising a carbon/carbon double bond that forms a resonance structure with the carbon/oxygen double bond of the carboxyl group, said composition being characterized in that it comprises a dispersing agent of the polyethylene oxide-based block polymer or copolymer type. The invention also relates to a process for chemical grafting of an organic acid onto a filler comprising at least one hydroxyl group, using said composition, so as to obtain a polymerizable liquid mixture.

Abstract: The invention concerns a method for polymerising vinyl monomers and/or oligomers comprising at least a vinyl radical, which consists in mixing the vinyl monomer or the oligomer comprising at least a vinyl radical with: at least dioxygen supplying agent, at least a aldehyde representing for example between 1% and 15% of the weight of the mixture, at least an accelerator which may for example of consist in a metallic salt.