Nonaqueous electrolyte secondary battery insulating porous layer
AssigneeSumitomo Chemical Company, Limited
InventorsHiroki Hashiwaki, Junji Suzuki, Syuichi Nakamoto
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Abstract
The present invention has an object to provide (i) a nonaqueous electrolyte secondary battery separator having excellent ion permeability and (ii) an insulating porous layer by which to achieve the nonaqueous electrolyte secondary battery separator. The insulating porous layer is a nonaqueous electrolyte secondary battery insulating porous layer containing: a resin A; and a resin B, the resin A and the resin B having therebetween a Hansen solubility parameter distance (HSP distance) (Ra) of not more than 10 MPa1/2.
Claims7
A nonaqueous electrolyte secondary battery insulating porous layer comprising:
- a resin A;
- and
- a resin B,
- the resin A and the resin B being a combination of two kinds of resins that have the greatest total weight of resins contained in the nonaqueous electrolyte secondary battery insulating porous layer,
- wherein the resin A and the resin B are each an aromatic polymer;
- and
- the resin A and the resin B having therebetween a Hansen solubility parameter distance (HSP distance) (Ra) of not more than 10 MPa1/2.
Dependencies are inferred from the claim text.