US 7,585,551 B2
Polyimide resin polymer and alignment film materials containing same for liquid crystal display
Ming-Ruei Tsai, Kaohsiung (Taiwan); Wen-Chung C Chu, Kaohsiung (Taiwan); Chang Chia-Wen, Kaohsiung (Taiwan); and Lai Ming-Chih, Kaohsiung (Taiwan)
Assigned to Daxin Materials Corporation, Hsinchu County (Taiwan)
Filed on Jun. 29, 2007, as Appl. No. 11/824,205.
Claims priority of application No. 95124014 A (TW), filed on Jun. 30, 2006.
Prior Publication US 2008/0020149 A1, Jan. 24, 2008
Int. Cl. C09K 19/00 (2006.01)
U.S. Cl. 428—1.26  [528/310] 13 Claims
 
1. A polyimide resin polymer, containing at least one repeating unit selected from those of formula (A-1) and formula (A-2),

OG Complex Work Unit Drawing
wherein, P1 is a tetravalent organic radical, and Q1 is a group of formula (Q-1) or formula (Q-2);

OG Complex Work Unit Drawing
wherein, P2 is a tetravalent organic radical, and Q2 is a group of formula (Q-1) or formula (Q-2);

OG Complex Work Unit Drawing
wherein R1, R2, and R3 independently represent hydrogen, halogen, C1-C10 alkyl, or a monovalent, fluorine-containing C1-C10 organic radical, with the proviso that R1, R2, and R3 can not all be hydrogen;
X1 is —COO—, —CO—, —OCO—, —NHCO—, —CONH—, or —S—;
R4 is a monovalent C1-C40 organic radical with an aliphatic or an aromatic or both skeletons; and

OG Complex Work Unit Drawing
wherein R5 and R7 independently represent hydrogen, halogen, C1-C10 alkyl or a monovalent, fluorine-containing C1-C10 organic radical;
R6 is C1-C10 alkyl or a monovalent, fluorine-containing C1-C10 organic radical;
X2 is O or S; and
X1 and R4 are as defined above.