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：US20230275233A1

公开(公告)日：2023-08-31

申请号：US18017474

申请日：2021-08-11

Applicant: DENKA COMPANY LIMITED

Inventor： Ryosuke KANTO ,  Yuhei ISHIGAKI ,  Jun WATANABE

IPC: H01M4/62 ,  H01M10/0569 ,  H01M4/04 ,  H01M4/66 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M10/0569 ,  H01M4/625 ,  H01M4/0404 ,  H01M4/661 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M2300/0051 ,  H01M2300/0037 ,  H01M2004/028

Abstract: A composition including a graft copolymer, wherein the graft copolymer has a stem polymer and a branch polymer; the stem polymer contains a polyvinyl alcohol structure, the branch polymer contains a first monomer unit containing a (meth)acrylonitrile monomer unit and/or a (meth)acrylic acid monomer; the composition has a gel fraction of 30% or more; the gel fraction is represented by following formula: the gel fraction %=A×100/1; A g is an insoluble content left on a filter pater when 1 g of the composition is added to 300 ml of dimethyl sulfoxide to obtain a mixture and the mixture is stirred at 60° C. for 15 hours and then filtered through the filter paper, which is a No. 5C filter paper as specified in JIS P 380.

公开(公告)号：US20220010097A1

公开(公告)日：2022-01-13

申请号：US17291367

申请日：2019-11-06

Applicant: DENKA COMPANY LIMITED

Inventor： Suguru ONUKI ,  Wataru NISHINO ,  Atsunori KONDO ,  Yuhei ISHIGAKI ,  Naoki KOBAYASHI

IPC: C08K5/38 ,  C08F236/12

Abstract: A chloroprene-unsaturated nitrile copolymer composition containing 100 parts by mass of a chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, and 0.05 to 2.0 parts by mass of a xanthogen compound.

公开(公告)号：US20210395422A1

公开(公告)日：2021-12-23

申请号：US17291347

申请日：2019-11-06

Applicant: DENKA COMPANY LIMITED

Inventor： Wataru NISHINO ,  Suguru ONUKI ,  Atsunori KONDO ,  Yuhei ISHIGAKI ,  Naoki KOBAYASHI

IPC: C08F236/18 ,  C08F220/44

Abstract: A chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, in which the chloroprene-unsaturated nitrile copolymer has a peak at 5.80 to 6.00 ppm in a 1H-NMR spectrum as measured in a deuterochloroform solvent, and a ratio (A/B) of a peak area (A) at 5.80 to 6.00 ppm and a peak area (B) at 4.05 to 6.20 ppm is 0.6/100 to 1.1/100.

公开(公告)号：US20230348646A1

公开(公告)日：2023-11-02

申请号：US18018060

申请日：2021-08-11

Applicant: DENKA COMPANY LIMITED

Inventor： Yuhei ISHIGAKI ,  Ryosuke KANTO ,  Jun WATANABE

IPC: C08F261/04 ,  C08L51/06 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

CPC classification number: C08F261/04 ,  C08L51/06 ,  H01M4/622 ,  H01M4/625 ,  H01M4/0404 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M2004/028

Abstract: A composition that serves as a binder for a positive electrode with a good balance between suppression of battery performance degradation at a high-capacity electrode, high-temperature storage property, and DC resistance, a slurry for a positive electrode using the composition, a positive electrode, and a secondary battery. A free induction decay curve of the composition obtained by measuring at 180° C. by Solid Echo method using pulse NMR is separated into three components, component S180, component M180, and component H180, a component ratio of the component S180 is 10% or more and 80% or less, and a relaxation time of the component S180 is 500 μs or more.

公开(公告)号：US20230317951A1

公开(公告)日：2023-10-05

申请号：US18017529

申请日：2021-08-11

Applicant: DENKA COMPANY LIMITED

Inventor： Ryosuke KANTO ,  Yuhei ISHIGAKI ,  Jun WATANABE

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485

CPC classification number: H01M4/622 ,  H01M4/625 ,  H01M4/0404 ,  H01M4/661 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M2004/028

Abstract: A composition, serving as a binder with a good balance between suppression of battery performance degradation at a high-capacity electrode, high-temperature storage property, and DC resistance, a slurry for a positive electrode using the composition, a positive electrode, and a secondary battery. The composition includes a graft copolymer, wherein: the graft copolymer has a stem polymer and a branch polymer; the stem polymer contains a polyvinyl alcohol structure, the branch polymer contains a first monomer unit containing a (meth)acrylonitrile monomer unit and/or a (meth)acrylic acid monomer; the composition has a swelling rate to an electrolytic solution of 105 to 200% at 25° C. for 15 days; the swelling rate is a swelling rate after immersing the composition in the electrolytic solution at 25° C. for 15 days; and the electrolytic solution is obtained by mixing ethylene carbonate and diethyl carbonate at a volume ratio of 1:2.

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)