Abstract: The present invention relates to a hot-melt self-adhesive composition comprising: i) from 40% to 80% by weight of at least one but-1-ene-ethylene copolymer A, said copolymer comprising more than 80% by weight of units derived from but-1-ene; ii) from 1.5% to 4.5% by weight of at least one propylene-ethylene-butene copolymer T, said copolymer T comprising more than 50% by weight of units derived from propylene; iii) at least one nonhydrogenated tackifying resin obtained by polymerization, or copolymerization with an aromatic hydrocarbon, of mixtures of unsaturated aliphatic hydrocarbons having from 4 to 6 carbon atoms resulting from petroleum cuts.

Abstract: The invention relates to a composition comprising: a homopolymer polyvinylidene fluoride; a copolymer of vinylidene fluoride and of at least one other fluorinated comonomer copolymerizable with vinylidene fluoride (VDF), the weight proportion of the copolymer in the composition being between 10 to 35%; and a plasticizer, the weight proportion of the plasticizer in the composition being between 1 and 5%. The invention also relates to a method for producing the composition and the use thereof for producing various items.