	US 12,394,827 B2
	Binder composition for non-aqueous secondary battery heat-resistant layer, slurry composition for non-aqueous secondary battery heat-resistant layer, heat-resistant layer for non-aqueous secondary battery, and non-aqueous secondary battery
Yuzo Kitazawa, Tokyo (JP); and Kazuki Asai, Tokyo (JP)
Assigned to ZEON CORPORATION, Tokyo (JP)
Appl. No. 17/635,766
Filed by ZEON CORPORATION, Tokyo (JP)
PCT Filed Aug. 21, 2020, PCT No. PCT/JP2020/031739 § 371(c)(1), (2) Date Feb. 16, 2022, PCT Pub. No. WO2021/039673, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 2019-158926 (JP), filed on Aug. 30, 2019.
Prior Publication US 2022/0320605 A1, Oct. 6, 2022
Int. Cl. H01M 10/42 (2006.01); C08K 3/22 (2006.01); C08K 3/30 (2006.01); C08L 33/20 (2006.01)

CPC H01M 10/4235 (2013.01) [C08K 3/22 (2013.01); C08K 3/30 (2013.01); C08L 33/20 (2013.01); C08K 2003/2227 (2013.01); C08K 2003/3045 (2013.01)]

7 Claims

1. A binder composition for a non-aqueous secondary battery heat-resistant layer comprising a particulate polymer, wherein

the particulate polymer includes a cyano group-containing monomer unit, a hydroxyl group-containing monomer unit, and a (meth)acrylic acid ester monomer unit,

a value M^OH/S obtained by dividing a value M^OHof a mole fraction of the hydroxyl group-containing monomer unit in the particulate polymer by a value S of surface area of the particulate polymer in units of μm²is 0.40 or more and 1.51 or less,

a mole fraction of the (meth)acrylic acid ester monomer unit in the particulate polymer is more than 0.5, and

a mole fraction of the cyano group-containing monomer unit in the particulate polymer is 0.07 or less.