US 12,460,039 B2
Block copolymer intermediate, block copolymer, and methods for producing same
Youki Kou, Sakura (JP); and Hisakazu Tanaka, Sakura (JP)
Assigned to DIC CORPORATION, Tokyo (JP)
Appl. No. 17/788,049
Filed by DIC Corporation, Tokyo (JP)
PCT Filed Dec. 17, 2020, PCT No. PCT/JP2020/047077
§ 371(c)(1), (2) Date Jun. 22, 2022,
PCT Pub. No. WO2021/140860, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 2020-000856 (JP), filed on Jan. 7, 2020.
Prior Publication US 2023/0093202 A1, Mar. 23, 2023
Int. Cl. C08F 297/02 (2006.01); B01J 19/00 (2006.01); C08F 212/32 (2006.01); C08F 220/14 (2006.01); C08F 265/06 (2006.01)
CPC C08F 297/026 (2013.01) [B01J 19/0093 (2013.01); C08F 212/32 (2013.01); C08F 220/14 (2013.01); C08F 265/06 (2013.01); B01J 2219/00889 (2013.01); C08F 2438/00 (2013.01); C08F 2800/20 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A block copolymer represented by general formula (4):

OG Complex Work Unit Chemistry
(wherein R1 and R7 each independently represent a polymerization initiator residue, R2 and R8 each independently represent an aromatic group or an alkyl group, Y1 represents a polymer block of (meth)acrylic ester, Y2 represents a polymer block of styrene or a derivative of styrene, R3 represents an alkylene group having 1 to 6 carbon atoms, L represents a linking group, m and n each independently represent an integer from 1 to 5, R4 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an aromatic group, and R5 and R6 each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms).