US 12,187,855 B2
Intermediate for block copolymer, block copolymer, and methods for producing same
Yukie Uemura, Takaishi (JP); Youki Kou, Takaishi (JP); and Hisakazu Tanaka, Takaishi (JP)
Assigned to DIC Corporation, Tokyo (JP)
Appl. No. 17/617,109
Filed by DIC Corporation, Tokyo (JP)
PCT Filed Jun. 4, 2020, PCT No. PCT/JP2020/022041
§ 371(c)(1), (2) Date Dec. 7, 2021,
PCT Pub. No. WO2020/255726, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 2019-114712 (JP), filed on Jun. 20, 2019.
Prior Publication US 2022/0227945 A1, Jul. 21, 2022
Int. Cl. C08G 81/02 (2006.01); C08F 8/20 (2006.01)
CPC C08G 81/021 (2013.01) [C08F 8/20 (2013.01)] 6 Claims
 
1. A block copolymer intermediate represented by the following general formula (1) or (2):

OG Complex Work Unit Chemistry
wherein, in the general formulae (1) and (2),
each of R1 and R3 independently represents a polymerization initiator residue,
each of R2 and R4 independently represents an aromatic group or an alkyl group,
Y1 represents a polymer block of (a)an (meth)acrylic acid ester,
Y2 represents a polymer block of styrene or a derivative thereof,
L represents an alkylene group, a phenylene group, or a single bond,
X represents a halogen atom, and
each of m and n independently represents an integer of 1 to 5.