公开(公告)号：US20210230338A1

公开(公告)日：2021-07-29

申请号：US17259548

申请日：2019-06-10

Applicant: ZEON CORPORATION

Inventor： Yusuke YASU

IPC: C08F297/04

Abstract: Provided is a block copolymer that can serve as a precursor of a hydrogenated block copolymer. The block copolymer includes polymer blocks [A] and [B]. The polymer block [A] includes a polycyclic aromatic vinyl monomer unit including at least two monocycles selected from the group consisting of aromatic hydrocarbon monocycles and aromatic heteromonocycles. A mass ratio of proportional content of 1,2-vinyl bonds and proportional content of 1,4-vinyl bonds in the block copolymer is not less than 5/95 and not more than 90/10.

公开(公告)号：US20220033328A1

公开(公告)日：2022-02-03

申请号：US17276516

申请日：2019-06-25

Applicant: ZEON CORPORATION

Inventor： Yusuke YASU ,  Kensaku FUJII

IPC: C07C7/12 ,  B01J20/08 ,  B01J20/28 ,  C08F212/32 ,  C08F297/02 ,  C08F236/10

Abstract: Provided is a method of purifying a monomer composition that contains a polycyclic aromatic vinyl compound including at least two monocycles selected from the group consisting of aromatic hydrocarbon monocycles and aromatic heteromonocycles. The purification method includes an impurity removal step of removing at least sulfur from the monomer composition.

公开(公告)号：US20210032396A1

公开(公告)日：2021-02-04

申请号：US16981693

申请日：2019-03-18

Applicant: ZEON CORPORATION

Inventor： Takeshi ASADA ,  Hironari SUDEJI ,  Kensaku FUJII ,  Yusuke YASU ,  Hiroya NISHIOKA

IPC: C08F297/04 ,  C08J5/18 ,  B29C55/06 ,  G02B1/04 ,  G02B5/30 ,  B29C48/88 ,  B29C48/00 ,  B29K25/00 ,  B29K96/04 ,  B29K105/00

Abstract: A phase difference film composed of a resin C containing a copolymer P including a polymerization unit A and a polymerization unit B, the phase difference film including a lamellar phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the formulae (1A): f(A)>0.5 and (2):D(A)>D(B), or the formulae (1B): f(B)>0.5 and (2). f(A) represents a total weight ratio of the polymerization unit A in the copolymer P, f(B) represents a total weight ratio of the polymerization unit B in the copolymer P, D(A)=ReA(450)/ReA(550), D(B)=ReB(450)/ReB(550), and ReA(450), ReA(550), ReB(450) and ReB(550) are as defined in the description.

公开(公告)号：US20210054130A1

公开(公告)日：2021-02-25

申请号：US17049336

申请日：2019-04-18

Applicant: ZEON CORPORATION

Inventor： Yusuke YASU

IPC: C08F279/02

Abstract: A cyano group-containing polymer is produced using a polymer composition including an olefinic double bond-containing polymer, cyano group-containing compound represented by the following Formula (1): R—C2H4—CN  (1) [in the Formula (1), R represents a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aromatic ring group, a cyano group, a hydroxy group, or a cycloalkyl group], and a hydrocyanation catalyst.

公开(公告)号：US20210009744A1

公开(公告)日：2021-01-14

申请号：US16981694

申请日：2019-03-18

Applicant: ZEON CORPORATION

Inventor： Takeshi ASADA ,  Hironari SUDEJI ,  Kensaku FUJII ,  Yusuke YASU ,  Hiroya NISHIOKA

IPC: C08F297/04 ,  C08J5/18 ,  B29C48/08 ,  B29C48/88 ,  B29C55/06 ,  G02B1/04 ,  G02B5/30

Abstract: A phase difference film composed of a resin containing a copolymer including polymerization units A and B, the phase difference film including a cylindrical phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the following condition (1) or (2). Condition (1): D(A)>D(B) and f(B)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are parallel to each other. Condition (2): D(A)>D(B) and f(A)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are orthogonal to each other.