US 12,230,770 B2
Slurry composition for non-aqueous secondary battery heat-resistant layer, heat-resistant layer for non-aqueous secondary battery, and non-aqueous secondary battery
Kazuki Asai, Tokyo (JP)
Assigned to ZEON CORPORATION, Tokyo (JP)
Appl. No. 17/753,559
Filed by ZEON CORPORATION, Tokyo (JP)
PCT Filed Aug. 31, 2020, PCT No. PCT/JP2020/032950
§ 371(c)(1), (2) Date Mar. 8, 2022,
PCT Pub. No. WO2021/059880, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-177716 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0336868 A1, Oct. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/42 (2006.01); C08F 220/56 (2006.01); C08F 265/06 (2006.01); C08L 33/26 (2006.01); C08L 51/00 (2006.01); H01M 10/0525 (2010.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01)
CPC H01M 10/4235 (2013.01) [C08F 220/56 (2013.01); C08F 265/06 (2013.01); C08L 33/26 (2013.01); C08L 51/003 (2013.01); H01M 10/0525 (2013.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01); C08L 2201/08 (2013.01); C08L 2201/54 (2013.01)] 6 Claims
 
1. A slurry composition for a non-aqueous secondary battery heat-resistant layer comprising a water-soluble polymer, non-conductive organic particles, and water, wherein
the water-soluble polymer includes an amide group-containing monomer unit, an acid group-containing monomer unit, and a hydroxyl group-containing monomer unit,
the amide group-containing monomer unit, the acid group-containing monomer unit, and the hydroxyl group-containing monomer unit are repeating units derived from an amide group-containing monomer, an acid group-containing monomer, and a hydroxyl group-containing monomer, respectively, used to obtain the water-soluble polymer,
proportional content of the amide group-containing monomer unit in the water-soluble polymer is not less than 63 mass % and not more than 98 mass % and proportional content of the acid group-containing monomer unit in the water-soluble polymer is not less than 1 mass % and not more than 20 mass %,
a molar ratio of proportional content of the hydroxyl group-containing monomer unit in the water-soluble polymer relative to proportional content of the acid group-containing monomer unit in the water-soluble polymer is 0.70 or more and 1.16 or less,
the non-conductive organic particles include a cross-linkable monomer unit, and
proportional content of the cross-linkable monomer unit in the non-conductive organic particles is not less than 20 mass % and not more than 95 mass %.