US 12,479,991 B2
Particle and method for producing particle
Kengo Kanazaki, Kanagawa (JP); Fumio Yamauchi, Kanagawa (JP); Motokazu Kobayashi, Kanagawa (JP); Norishige Kakegawa, Tokyo (JP); Ryo Natori, Tokyo (JP); and Tetsushi Yamamoto, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Apr. 6, 2022, as Appl. No. 17/714,402.
Application 17/714,402 is a continuation of application No. PCT/JP2020/038636, filed on Oct. 13, 2020.
Claims priority of application No. 2019-188848 (JP), filed on Oct. 15, 2019.
Prior Publication US 2022/0227984 A1, Jul. 21, 2022
Int. Cl. C08L 25/14 (2006.01); C08F 212/08 (2006.01); G01N 33/545 (2006.01)
CPC C08L 25/14 (2013.01) [C08F 212/08 (2013.01); G01N 33/545 (2013.01)] 3 Claims
 
1. A particle comprising:
a copolymer comprising a repeating unit represented by formula (I) and a repeating unit represented by formula (II); and
a structural unit represented by formula (III):

OG Complex Work Unit Chemistry
wherein, in the formula (II), A1 to A3 are each independently any of —H, —CH3, —CH2CH3, a bond that bonds to Si in the formula (II) via —O—, and a bond to Si in the formula (III),
wherein, in the formula (III), X1 to X4 each independently represent a bond including —O— binding to Si of an adjacent structure represented by the formula (III), a bond with O bonded to Si in the formula (II), a hydroxy group, or a bond with the copolymer,
wherein at least one of structural units represented by the formula (III) has a bond with the copolymer, and R3 and R4 each independently represent a linear or branched alkyl group having 1 to 30 carbon atoms that optionally includes —NH—CO—, —NH—, —O—, —S—, or —CO—, and substituted with at least one carboxy group or at least one amino group, and
wherein the copolymer further comprises a repeating unit represented by formula (IV):

OG Complex Work Unit Chemistry
wherein Y is any of H, Na, and K.