Abstract: The invention relates to a purification method for purifying a vinylidene fluoride polymer comprising at least one impurity, the method comprising the following steps: washing of the vinylidene fluoride polymer with a stream of supercritical fluid; and extraction of residual supercritical fluid from the vinylidene fluoride polymer. The invention also relates to a vinylidene fluoride polymer, a fluid conveyance part comprising or consisting of said polymer; as well as the use of said fluid conveyance part.

Abstract: The present invention relates to a method for preparing a fatty-chain high-molecular-weight alkoxylate, comprising treating the reaction medium with an acid having a pKa of 3.5 or less.

Abstract: The invention relates to a process for producing at least one grafted polyphenol, comprising at least the step of reacting, in the presence of at least one catalyst, at least one polyphenol with at least one compound of formula (I) below: wherein: R1 is a linear or branched, saturated or unsaturated, C3-C30, preferably C3-C20, more preferentially C8-C20, even more preferentially C8-C18, hydrocarbon-based chain, optionally comprising one or more saturated or unsaturated rings, said chain being optionally interrupted by one or more heteroatoms chosen from O, S and N, preferably chosen from O and S, more preferably O; R2 is chosen from a hydrogen atom and a linear or branched, saturated or unsaturated, C1-C60 hydrocarbon-based chain, optionally comprising one or more saturated or unsaturated rings, said chain being optionally interrupted by one or more heteroatoms chosen from O, S and N, preferably chosen from O and S, more preferably O, the number of moles of said compound of formula (I) being greater th