POWDER COMPOSITION BASED ON AT LEAST ONE FLUOROPOLYMER AND AT LEAST ONE HYDROPHILIC POLYMER FOR A SEPARATOR COATING

The present invention relates to a composition comprising a polymer P1 comprising monomer units derived from vinylidene fluoride and optionally a comonomer M1 compatible with vinylidene fluoride and a polymer P2 comprising monomer units derived from a monomer M2 of formula RRC═C(R)C(O)R, in which the substituents R, Rand Rare independently selected from the group consisting of H and a C-Calkyl; R is selected from the group consisting of —NHC(CH)CHC(O)CHor —OR′, where R′ is selected from the group consisting of H and a C-Calkyl optionally substituted by one or more —OH groups or a five- or six-membered heterocycle comprising at least one nitrogen atom in its cyclic chain, characterised in that the crystallisation temperature of the composition is Tc