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：US20200207900A1

公开(公告)日：2020-07-02

申请号：US16634685

申请日：2018-07-31

Applicant: DENKA COMPANY LIMITED

Inventor： Yuhei ISHIGAKI ,  Suguru ONUKI ,  Shogo HAGIWARA ,  Uichiro YAMAGISHI

IPC: C08F293/00 ,  C08F20/06 ,  C08L53/00 ,  C08F2/38 ,  C08F36/18 ,  B60S1/38

Abstract: Disclosed is a block copolymer including one or more blocks of an acrylate polymer and one or more blocks of a chloroprene polymer, wherein the number average molecular weight of the block copolymer is 110,000 or more, the number average molecular weight of the block of a chloroprene polymer is 80,000 or more in total, and the block copolymer has a functional group with a structure represented by the following chemical formula (1) or (2): wherein in the chemical formula (1), R1 represents 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.

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.)

公开(公告)号：US20190389994A1

公开(公告)日：2019-12-26

申请号：US16481752

申请日：2018-03-29

Applicant: DENKA COMPANY LIMITED

Inventor： Wataru NISHINO ,  Yuhei ISHIGAKI ,  Takashi AIZAWA ,  Shogo HAGIWARA ,  Uichiro YAMAGISHI

IPC: C08F293/00 ,  C09J153/02

Abstract: To provide a block copolymer that includes an aromatic vinyl compound polymer and a chloroprene polymer, has a number average molecular weight of 100,000 or more, is preferred for a rubber composition and an adhesive composition, and is suitable for industrial production. A block copolymer includes at least one aromatic vinyl compound polymer block and at least one chloroprene polymer block, has a functional group with a structure represented by Chemical Formula (1) or (2), and has a number average molecular weight of 100,000 or more. The chloroprene polymer block has a number average molecular weight of 80,000 or more in total. (In Chemical Formula (1), R1 is 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)