An object of the invention is to provide vinylidene fluoride copolymers exhibiting higher adhesion with respect to metal foils than do conventional vinylidene fluoride copolymers, and to provide uses of the vinylidene fluoride copolymers. The vinylidene fluoride copolymers of the invention are obtained by copolymerizing vinylidene fluoride with a compound represented by Formula (A). In Formula (A), R1, R2 and R3 are each independently a hydrogen atom, a chlorine atom or an alkyl group; and X is an atomic group with a molecular weight of not more than 500 containing a heteroatom and having a main chain composed of 1 to 20 atoms, or is a heteroatom.
本发明的目的是提供与传统的
偏氟乙烯共聚物相比在
金属箔上具有更高附着力的
偏氟乙烯共聚物,并提供
偏氟乙烯共聚物的用途。本发明的
偏氟乙烯共聚物是通过将
偏氟乙烯与由式(A)表示的化合物共聚而得。在式(A)中,R1、R2 和 R3 各自独立地为
氢原子、
氯原子或烷基;X 是分子量不超过 500 的原子团,含有一个杂原子,主链由 1 至 20 个原子组成,或者是一个杂原子。