	US 11,929,507 B2
	Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode and method of producing same, electrode for non-aqueous secondary battery, and non-aqueous secondary battery
Yukie Ito, Tokyo (JP); Kenya Sonobe, Tokyo (JP); and Maki Mesuda, Tokyo (JP)
Assigned to ZEON CORPORATION, Tokyo (JP)
Appl. No. 17/251,814
Filed by ZEON CORPORATION, Tokyo (JP)
PCT Filed Jun. 27, 2019, PCT No. PCT/JP2019/025534 § 371(c)(1), (2) Date Dec. 14, 2020, PCT Pub. No. WO2020/004526, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018-124649 (JP), filed on Jun. 29, 2018.
Prior Publication US 2021/0119215 A1, Apr. 22, 2021
Int. Cl. H01M 4/62 (2006.01); C08F 220/14 (2006.01); C08L 25/12 (2006.01); C08L 33/20 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/622 (2013.01) [C08F 220/14 (2013.01); C08L 25/12 (2013.01); C08L 33/20 (2013.01); H01M 10/0525 (2013.01); C08F 2800/20 (2013.01); H01M 2004/021 (2013.01)]

8 Claims

1. A binder composition for a non-aqueous secondary battery electrode comprising a binder and an organic solvent, wherein

the binder includes a particulate polymer A and a polymer B,

the polymer B has N-methyl-2-pyrrolidone insoluble content of 50 mass % or less,

the particulate polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.0 mass % and not more than 10.0 mass % and includes a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.0 mass % and not more than 98.0 mass %, and

the particulate polymer A includes a particulate polymer A1 having a volume-average particle diameter of D50_A1and a particulate polymer A2 having a volume-average particle diameter of D50_A2, where D50_A1and D50_A2satisfy a formula: 550 nm≥D50_A2≥300 nm , 300 nm >D50_A1≥50 nm.