公开(公告)号：US20190309195A1

公开(公告)日：2019-10-10

申请号：US16315414

申请日：2017-06-29

Applicant: DENKA COMPANY LIMITED

Inventor： Gaito KIYOFUJI ,  Masao ONOZUKA ,  Manabu MIZUSHIMA ,  Shogo HAGIWARA ,  Hironori KONISHI ,  Daisuke SHIMIYA ,  Kazuhiro KOTE

IPC: C09J111/02 ,  C09J11/04 ,  C09J11/06

Abstract: A latex composition gives favorable initial adhesive strength after short drying period, shows storage stability and spray coating characteristics and gives a soft adhesive layer after drying and a one-pack type aqueous adhesive. The latex composition includes a chloroprene-based polymer latex (A) containing a chloroprene-based polymer in an amount of 50 to 85 mass % as solid matter and an acrylic polymer latex (B) having a glass transition temperature of −52 to −9° C. and containing an acrylic polymer containing a sodium alkylbenzenesulfonate having a structure represented by the Chemical Formula (1) in an amount of 15 to 50 mass % as solid matter, in a total amount of 100 parts by mass, and additionally at least one pH regulator (C) selected from boric acid, ammonium sulfate, and amino acids having an isoelectric point of 5.5 to 6.5 in an amount of 3 to 13 parts by mass as solid matter.

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)