Composition for non-aqueous secondary battery adhesive layer, non-aqueous secondary battery adhesive layer, laminate, and non-aqueous secondary battery

A composition for a non-aqueous secondary battery adhesive layer, comprising a particulate polymer and a binder,

• wherein the particulate polymer consists of 5% to 50% by mass of a (meth)acrylonitrile monomer unit, 15% to 60% by mass of a (meth)acrylate monomer unit, 0.1% to 20% by mass of a (meth)acrylic acid monomer unit, 1% to 35% by mass of an aromatic vinyl monomer unit and 0.1% to 3.5% by mass of a cross-linkable monomer unit,
• the particulate polymer has a core-shell structure having a core and a shell that at least partially covers an outer surface of the core;
• wherein the particulate polymer has a volume-average particle diameter of 400 to 800 nm;
• wherein a glass transition temperature of the core is 0° C. or above or 150° C. or below and a diameter of the core is 50% or more or 99% or less of the volume-average particle diameter (100%) of the particulate polymer;
• wherein a glass transition temperature of the shell is 50° C. or above or 200° C. or below and the shell coverage on the core outer surface is 10% or more or 99% or less;
• and
• an amount of elution of the particulate polymer into electrolysis solution is 0.1% to 10%, wherein the amount of elution of the particulate polymer into the electrolysis solution is calculated by using equation (1):
• Elution
• ⁢
• ⁢
• Amount
• ⁢
• ⁢
• (
• %
• )
• =
• 1
• ⁢
• 00
• -
• [
• (
• W
• 1
• W
• 0
• )
• ×
• 100
• ]
• (
• 1
• )
• where aqueous dispersions containing the particulate polymer are dried to prepare a film piece, W0 is a mass of the film piece measured before an immersion process, W1 is a mass of the film piece measured after the immersion process, a composition of the electrolysis solution is ethylene carbonate/ethyl methyl carbonate/diethyl carbonate=30/20/50 (by volume), and the immersion process comprises immersing 1 g of the film piece in 100 g of the electrolysis solution at 60° C. for 24 hours.