US 12,265,356 B2
Photoresponsive polymer, photoresponsive adhesive, toner, and image forming method
Haruo Horiguchi, Koganei (JP); Kouji Sugama, Musashino (JP); Kazuaki Nakamura, Hino (JP); Yukiko Nakai, Toyohashi (JP); and Toyoko Shibata, Tokyo (JP)
Assigned to KONICA MINOLTA, INC., Tokyo (JP)
Filed by Konica Minolta, Inc., Tokyo (JP)
Filed on Aug. 18, 2021, as Appl. No. 17/406,047.
Claims priority of application No. 2020-145015 (JP), filed on Aug. 28, 2020.
Prior Publication US 2022/0066345 A1, Mar. 3, 2022
Int. Cl. G03G 9/097 (2006.01); C08F 20/36 (2006.01); G03G 15/20 (2006.01)
CPC G03G 9/09775 (2013.01) [C08F 20/36 (2013.01); G03G 15/2098 (2021.01)] 23 Claims
OG exemplary drawing
 
1. A photoresponsive polymer that is fluidized by light irradiation and reversibly non-fluidized and contains a structural unit represented by a general formula (1) shown below:

OG Complex Work Unit Chemistry
wherein r1 is a hydrogen atom or a methyl group, and
A is a propenimine structure-containing group represented by a general formula (2-a), (2-b), or (2-c) shown below:

OG Complex Work Unit Chemistry
wherein Z1 and Z2 are each independently N or CX, and Z1≠Z2,
B1 is each independently a substituted or unsubstituted divalent aromatic hydrocarbon group or a substituted or unsubstituted divalent aromatic heterocyclic group,
B2 is each independently a substituted or unsubstituted monovalent aromatic hydrocarbon group or a substituted or unsubstituted monovalent aromatic heterocyclic group,
X, r2, and r3 are each independently a hydrogen atom or an alkyl group having 1 to 2 carbon atoms, and
r4 is each independently an alkylene group having 1 to 18 carbon atoms.