US 12,410,281 B2
Diamine compound, polyimide precursor and polyimide film using the same, and use thereof
Joo Hyun Lee, Daejeon (KR); Sang Yoon Park, Daejeon (KR); and So Young Lee, Daejeon (KR)
Assigned to SK Innovation Co., Ltd., Seoul (KR); and SK ie technology Co., Ltd., Seoul (KR)
Filed by SK Innovation Co., Ltd., Seoul (KR); and SK ie technology Co., Ltd., Seoul (KR)
Filed on May 3, 2022, as Appl. No. 17/735,811.
Claims priority of application No. 10-2021-0057925 (KR), filed on May 4, 2021; and application No. 10-2022-0041615 (KR), filed on Apr. 4, 2022.
Prior Publication US 2022/0389165 A1, Dec. 8, 2022
Int. Cl. C07D 241/04 (2006.01); C07D 295/16 (2006.01); C07D 498/08 (2006.01); C08G 73/10 (2006.01); C08J 5/18 (2006.01)
CPC C08G 73/1007 (2013.01) [C07D 295/16 (2013.01); C07D 498/08 (2013.01); C08G 73/1067 (2013.01); C08J 5/18 (2013.01); C08J 2379/08 (2013.01)] 8 Claims
 
1. A diamine compound represented by the following Chemical Formula 1:

OG Complex Work Unit Chemistry
wherein
L1 to L4 are independently of one another a single bond or C1-C10 alkylene;
R1 to R4 are independently of one another hydrogen, halogen, C1-C10 alkyl, haloC1-C10 alkyl, C1-C10 alkoxy, C3-C10 cycloalkyl, or C6-C20 aryl, or R1 and R3 may be linked to each other by —NR′—, —O—, or —S— to form a ring;
R′ is hydrogen, C1-C10 alkyl, C3-C10 cycloalkyl, or C6-C20 aryl;
ring A and ring B are independently of each other a C6-C20 aromatic ring;
Ra and Rb are independently of each other halogen, C1-C10 alkyl, haloC1-C10 alkyl, C1-C10 alkoxy, C3-C10 cycloalkyl, or C6-C20 aryl;
a and b are independently of each other an integer of 0 to 3; and
m and n are independently of each other an integer of 1 to 10.