| abstract |
One embodiment of the present invention provides a separator for non-aqueous secondary batteries, which is provided with a porous base member and an adhesive porous layer arranged on one surface or both surfaces of the porous base member and containing a poly(vinylidene fluoride) resin, wherein the poly(vinylidene fluoride) resin has vinylidene fluoride and a monomer represented by formula (1) as monomer components and contains a copolymer A (a poly(vinylidene fluoride resin A) having a melting point of 130 to 148°C inclusive. R 1 to R 3 : a hydrogen atom, a halogen atom, a carboxyl group or a derivative thereof, or an alkyl group having 1 to 5 carbon atoms; X: a single bond, an alkylene group having 1 to 5 carbon atoms, or an alkylene group having 1 to 5 carbon atoms and having a substituent; and Y: a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or an alkyl group having 1 to 5 carbon atoms and having at least one hydroxy group. |