US 12,139,622 B2
Hollow resin particles for thermosensitive recording media
Koichi Sakabe, Yao (JP); and Katsushi Miki, Yao (JP)
Assigned to MATSUMOTO YUSHI-SEIYAKU CO., LTD., Osaka (JP)
Appl. No. 17/437,923
Filed by MATSUMOTO YUSHI-SEIYAKU CO., LTD., Yao (JP)
PCT Filed Mar. 17, 2020, PCT No. PCT/JP2020/011586
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/189653, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-053535 (JP), filed on Mar. 20, 2019.
Prior Publication US 2022/0127478 A1, Apr. 28, 2022
Int. Cl. C09D 11/107 (2014.01); B41M 5/42 (2006.01); B41M 5/44 (2006.01); C08J 9/14 (2006.01); C08J 9/20 (2006.01); C08J 9/232 (2006.01)
CPC C09D 11/107 (2013.01) [B41M 5/423 (2013.01); B41M 5/44 (2013.01); C08J 9/141 (2013.01); C08J 9/20 (2013.01); C08J 9/232 (2013.01); C08J 2203/22 (2013.01); C08J 2333/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. Hollow resin particles for thermosensitive recording media, the particles comprising a thermoplastic resin shell and a hollow part surrounded by the shell,
wherein the hollow resin particles contain a thermally-vaporizable hydrocarbon in an encapsulation ratio of at least 0.2 wt %,
a mean volume particle size of the hollow resin particles ranges from 0.1 to 10 μm,
a hollow ratio of the hollow resin particles ranges from 71 to 95%, and
a compression recovery rate of the hollow resin particles is at least 70%.