	US 11,883,790 B2
	Hollow particles, method for producing same, and usage of same
Takuto Ouchi, Osaka (JP); Momoka Noda, Osaka (JP); Yugo Katayama, Osaka (JP); and Haruhiko Matsuura, Osaka (JP)
Assigned to SEKISUI KASEI CO., LTD., Osaka (JP)
Appl. No. 16/979,389
Filed by SEKISUI KASEI CO., LTD., Osaka (JP)
PCT Filed Mar. 13, 2019, PCT No. PCT/JP2019/010223 § 371(c)(1), (2) Date Sep. 9, 2020, PCT Pub. No. WO2019/177006, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 2018-047048 (JP), filed on Mar. 14, 2018; and application No. 2018-163459 (JP), filed on Aug. 31, 2018.
Prior Publication US 2021/0001300 A1, Jan. 7, 2021
Int. Cl. B01J 13/18 (2006.01); G02B 1/18 (2015.01); C09D 5/00 (2006.01); C08F 220/32 (2006.01); C09D 7/40 (2018.01); C09D 133/14 (2006.01); F16L 59/02 (2006.01)

CPC B01J 13/185 (2013.01) [C08F 220/325 (2020.02); C09D 5/006 (2013.01); C09D 7/70 (2018.01); C09D 133/14 (2013.01); F16L 59/028 (2013.01); G02B 1/18 (2015.01); C08F 2800/20 (2013.01)]

16 Claims

1. Hollow particles having a shell containing at least one layer and having an average particle diameter of 10 to 150 nm,

wherein a ratio β between absorbance at 908 cm⁻¹(A908) and absorbance at 1722 cm⁻¹(A1722) in an infrared absorption spectrum obtained by measuring the hollow particles by ATR-FTIR (absorbance ratio (3: A908/A1722) is 0.02 or less.