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

1. 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, W 0 is a mass of the film piece measured before an immersion process, W 1 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.

2. A non-aqueous secondary battery adhesive layer prepared by using the composition for non-aqueous secondary battery adhesive layer according to claim 1 .

3. A laminate comprising a substrate and the non-aqueous secondary battery adhesive layer according to claim 2 disposed on at least one side of the substrate either directly or indirectly through one or more other layers.

4. A non-aqueous secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolysis solution,

wherein at least one of the positive electrode, the negative electrode, and the separator comprises the non-aqueous secondary battery adhesive layer according to claim 2 .

5. The non-aqueous secondary battery according to claim 4 , wherein the non-aqueous secondary battery is of spirally wound or laminate type.