公开(公告)号：US20200223961A1

公开(公告)日：2020-07-16

申请号：US16633671

申请日：2018-07-27

Applicant: DENKA COMPANY LIMITED

Inventor： Kosuke FUJIMOTO ,  Uichiro YAMAGISHI ,  Shogo HAGIWARA

IPC: C08F36/18

Abstract: Provide is a polymer having a narrow molecular weight distribution by living radical polymerization.A polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.

公开(公告)号：US20200165421A1

公开(公告)日：2020-05-28

申请号：US16631594

申请日：2018-07-20

Applicant: DENKA COMPANY LIMITED

Inventor： Yuhei ISHIGAKI ,  Shogo HAGIWARA ,  Uichiro YAMAGISHI ,  Suguru ONUKI ,  Kosuke FUJIMOTO ,  Wataru NISHINO

IPC: C08L15/02 ,  C08F36/18 ,  C09J115/02

Abstract: Provided is a chloroprene-based polymer having an industrially applicable sufficient molecular weight and capable of obtaining a vulcanized rubber excellent in durability and fatigue endurance and an adhesive excellent in layer separation resistance. A chloroprene-based polymer having a number average molecular weight Mn of 150000 to 300000 and comprising a functional group of a structure represented by the general formula (1) or (2) below: (wherein in the general formula (1), R1 shows hydrogen, chlorine, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclyl group.)