US 11,912,878 B2
Method of producing organic-inorganic hybrid infrared absorbing particles and organic-inorganic hybrid infrared absorbing particles
Hirofumi Tsunematsu, Kagoshima (JP); Takeshi Chonan, Kagoshima (JP); Atsushi Tofuku, Tokyo (JP); Seigou Kawaguchi, Yamagata (JP); and Naohiro Kobayashi, Yamagata (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP); and NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY, Yamagata (JP)
Appl. No. 17/413,653
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP); and NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY, Yamagata (JP)
PCT Filed Dec. 16, 2019, PCT No. PCT/JP2019/049252
§ 371(c)(1), (2) Date Jun. 14, 2021,
PCT Pub. No. WO2020/129919, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-236796 (JP), filed on Dec. 18, 2018; and application No. 2019-094032 (JP), filed on May 17, 2019.
Prior Publication US 2022/0049105 A1, Feb. 17, 2022
Int. Cl. C09C 3/10 (2006.01); C01G 41/02 (2006.01); C08F 2/08 (2006.01); C08F 2/46 (2006.01); C08F 112/08 (2006.01)
CPC C09C 3/10 (2013.01) [C01G 41/02 (2013.01); C08F 2/08 (2013.01); C08F 2/46 (2013.01); C08F 112/08 (2013.01); C01P 2006/60 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of producing organic-inorganic hybrid infrared absorbing particles comprising:
preparing a dispersion liquid containing infrared absorbing particles, a dispersant, and a dispersion medium;
removing the dispersion medium from the dispersion liquid by an evaporation;
preparing a raw material mixture liquid containing the infrared absorbing particles collected after the dispersion medium removing step, a coating resin material, an organic solvent, an emulsifying agent, water, and a polymerization initiator;
stirring the raw material mixture liquid while cooling; and
polymerizing the coating resin material after deoxygenation treatment which reduces an amount of oxygen in the raw material mixture liquid.