公开(公告)号：US11084918B2

公开(公告)日：2021-08-10

申请号：US16346857

申请日：2017-11-02

Applicant: ZEON CORPORATION

Inventor： Junji Kodemura ,  Shunjin Aihara ,  Yoshitaka Satoh

IPC: C08C2/06 ,  C08C3/00 ,  C08C19/00 ,  C08L9/10 ,  B29C41/00 ,  B29C41/14 ,  B65D65/42 ,  C09D109/10 ,  B29K105/00

Abstract: A method for producing a synthetic polyisoprene latex, including a step of mixing a latex of synthetic polyisoprene (A) synthesized by use of a Ziegler type catalyst and a latex of synthetic polyisoprene (B) synthesized by use of an organic alkali metal catalyst at a weight ratio of “synthetic polyisoprene (A): synthetic polyisoprene (B)=10:90 to 90:10”. In the method, preferably, the weight average molecular weight of the synthetic polyisoprene (A) is 100,000 to 3,000,000 and the weight average molecular weight of the synthetic polyisoprene (B) is 1,000,000 to 5,000,000.

公开(公告)号：US11898024B2

公开(公告)日：2024-02-13

申请号：US16482069

申请日：2018-02-09

Applicant: ZEON CORPORATION

Inventor： Shunjin Aihara ,  Junji Kodemura

IPC: C08L15/00 ,  C08K5/38 ,  C08J5/18 ,  C09J115/00 ,  C08K3/22

CPC classification number: C08L15/00 ,  C08J5/18 ,  C09J115/00 ,  C08J2315/00 ,  C08K2003/2296 ,  C08L2201/52 ,  C08L2203/16

Abstract: A latex composition contains a carboxy-modified conjugated diene polymer latex, a xanthogen compound, and a metal oxide.

公开(公告)号：US11034799B2

公开(公告)日：2021-06-15

申请号：US16077612

申请日：2017-02-16

Applicant: ZEON CORPORATION

Inventor： Masatoshi Ishiba ,  Shunjin Aihara ,  Junji Kodemura

IPC: C08J3/07 ,  C08J5/02 ,  C08C1/15 ,  C08C1/10 ,  C08C2/00 ,  B29C41/00 ,  B29C41/14 ,  C09J109/00 ,  C09J153/02 ,  C08L9/10 ,  C08L53/02 ,  B29K105/00

Abstract: A method for producing a polymer latex, including an emulsification step of mixing a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer in an organic solvent, with an aqueous solution including 0.1 to 30 parts by weight of a rosinate based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer, and emulsifying the resultant in water to thereby obtain an emulsified liquid, a solvent removal step of removing the organic solvent in the emulsified liquid, and a concentration step of concentrating the emulsified liquid from which the organic solvent is removed, and also adjusting the content rate of the rosinate in the emulsified liquid after concentration, in the range of 0.1 to 3 parts by weight based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer in the emulsified liquid.

公开(公告)号：US12110358B2

公开(公告)日：2024-10-08

申请号：US16346864

申请日：2017-11-02

Applicant: ZEON CORPORATION

Inventor： Junji Kodemura ,  Shunjin Aihara ,  Yoshitaka Satoh

IPC: C08F36/08 ,  B29C41/00 ,  B29K105/00 ,  B32B7/12 ,  C08C2/06 ,  C08C19/00 ,  C08F4/46 ,  C08F136/08 ,  C08J5/02 ,  C08J5/18 ,  C08L9/10 ,  C08L47/00 ,  C09J5/00 ,  C09J109/10

CPC classification number: C08F36/08 ,  B29C41/003 ,  B32B7/12 ,  C08C2/06 ,  C08C19/00 ,  C08F4/461 ,  C08F136/08 ,  C08J5/02 ,  C08J5/18 ,  C08L9/10 ,  C08L47/00 ,  C09J5/00 ,  C09J109/10 ,  B29K2105/0064 ,  B32B2553/00 ,  C08J2309/10 ,  C09J2409/00 ,  C08F136/08 ,  C08F2/06 ,  C08F36/08 ,  C08F2/06 ,  C08F136/08 ,  C08F4/48 ,  C08F36/08 ,  C08F4/48

Abstract: A synthetic polyisoprene latex containing synthetic polyisoprene, wherein the synthetic polyisoprene constituting the synthetic polyisoprene latex includes a low-molecular weight synthetic isoprene chain having a molecular weight of less than 1,000,000 at a content rate of 10 to 70% by weight and a high-molecular weight synthetic isoprene chain having a molecular weight of 1,000,000 or more at a content rate of 30 to 90% by weight. Also, a method for producing the synthetic polyisoprene latex, wherein the synthetic polyisoprene containing the low-molecular weight synthetic isoprene chain and the high-molecular weight synthetic isoprene chain is obtained by polymerizing a monomer containing isoprene in an organic solvent by use of an organic alkali metal catalyst.

公开(公告)号：US11374224B2

公开(公告)日：2022-06-28

申请号：US16633784

申请日：2018-08-23

Applicant: ZEON CORPORATION

Inventor： Norikazu Yamamoto ,  Yusaku Matsuo ,  Hidetake Ishii ,  Shunjin Aihara

IPC: H01M4/62 ,  C08F297/04 ,  H01M4/13 ,  H01M10/0525 ,  H01M50/411

Abstract: Provided is a binder composition for a non-aqueous secondary battery with which it is possible to form a functional layer that can provide a battery component such as an electrode or a separator with a balance of excellent handleability and process adhesiveness. The binder composition for a non-aqueous secondary battery contains: polymer particles containing a block polymer including a block region composed of an aromatic vinyl monomer unit; a water-soluble polymer including a hydrophilic group; and water. The block polymer has a diblock content of not less than 0 mass % and not more than 60 mass %. The water-soluble polymer has a weight-average molecular weight of not less than 15,000 and not more than 500,000.

公开(公告)号：US11482707B2

公开(公告)日：2022-10-25

申请号：US16766291

申请日：2018-11-20

Applicant: ZEON CORPORATION

Inventor： Norikazu Yamamoto ,  Shunjin Aihara

IPC: H01M4/62 ,  H01M4/36 ,  H01M10/0525

Abstract: Provided is a binder composition for a non-aqueous secondary battery with which it is possible to form a slurry composition for a non-aqueous secondary battery functional layer having excellent viscosity stability and a functional layer for a non-aqueous secondary battery having excellent pressability. The binder composition for a non-aqueous secondary battery contains water and a particulate polymer formed by a polymer including a block region composed of an aromatic vinyl monomer unit. The particulate polymer has a surface acid content of not less than 0.05 mmol/g and not more than 0.9 mmol/g.

公开(公告)号：US11174376B2

公开(公告)日：2021-11-16

申请号：US16465226

申请日：2017-11-02

Applicant: ZEON CORPORATION

Inventor： Shunjin Aihara ,  Junji Kodemura ,  Yoshitaka Satoh

IPC: C08L9/10 ,  B29C41/00 ,  B29C41/14 ,  C09J5/00 ,  C09J11/08 ,  C09J109/10 ,  B29K105/00

Abstract: A method for producing a polymer latex, includes a step of emulsifying a polymer solution of a synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer, in water in the presence of a rosin and/or a rosin metal salt, thereby obtaining an emulsified liquid, wherein the rosin and/or the rosin metal salt to be used have/has a total content rate of abietic acid, neoabietic acid and palustric acid, and salts thereof, of 5% by weight or less.

公开(公告)号：US09637621B2

公开(公告)日：2017-05-02

申请号：US14909616

申请日：2014-09-26

Applicant: ZEON CORPORATION

Inventor： Shunjin Aihara ,  Yoshiyuki Nakamura

IPC: C08L9/10 ,  C08K3/22 ,  C08L33/02

CPC classification number: C08L9/10 ,  C08K3/06 ,  C08K3/22 ,  C08K5/36 ,  C08K5/375 ,  C08K5/39 ,  C08L33/02 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2312/00

Abstract: A dip-forming composition which contains a weight average molecular weight 10,000 to 5,000,000 synthetic polyisoprene latex, a polycarboxylic acid and/or salt of a polycarboxylic acid, a sulfur-based vulcanizer, and a vulcanization accelerator is provided. According to the invention, a dip-forming composition which can suppress formation of coarse coagulum during aging and which can give a dip-formed article which is excellent in tensile strength and elongation even when the aging temperature is relatively low and the aging time is relatively short and, further, has excellent safety even when used in contact with the human body can be provided.

公开(公告)号：US11098136B2

公开(公告)日：2021-08-24

申请号：US16485343

申请日：2018-01-31

Applicant: ZEON CORPORATION

Inventor： Shunjin Aihara

IPC: C08C19/36 ,  C08L51/04

Abstract: A method for producing a modified polymer latex includes: adding a carboxyl group-containing compound, an anionic surfactant having a weight-average molecular weight of less than 500, and an anionic surfactant having a weight-average molecular weight of 500 or more to a polyisoprene latex; and reacting the polyisoprene with the carboxyl group-containing compound in a presence of the anionic surfactant having a weight-average molecular weight of less than 500 and the anionic surfactant having a weight-average molecular weight of 500 or more.

公开(公告)号：US09546239B2

公开(公告)日：2017-01-17

申请号：US14768675

申请日：2014-02-20

Applicant: ZEON CORPORATION

Inventor： Yoshiyuki Nakamura ,  Osamu Ishizu ,  Shunjin Aihara

IPC: C08K5/42 ,  C08F279/02 ,  C08K5/41 ,  C08L51/04 ,  C08K5/47 ,  C08K5/09

CPC classification number: C08F279/02 ,  C08K5/09 ,  C08K5/41 ,  C08K5/42 ,  C08K5/47 ,  C08L51/04

Abstract: Provided is a carboxy-modified synthetic isoprene polymer latex for dip molding use, which is produced by the graft polymerization of a synthetic isoprene polymer with a monomer having a carboxyl group in an aqueous phase and contains at least one anionic surfactant, wherein a carboxy-modified synthetic isoprene polymer that constitutes the carboxy-modified synthetic isoprene polymer latex has a tetrahydrofuran-insoluble content of 30 wt % or more.

Abstract translation: 本发明提供一种用于浸渍模塑用途的羧基改性的合成异戊二烯聚合物胶乳，其通过在水相中具有羧基的单体的合成异戊二烯聚合物接枝聚合并含有至少一种阴离子表面活性剂而制备， 构成羧基改性的合成异戊二烯聚合物胶乳的改性合成异戊二烯聚合物的四氢呋喃不溶物含量为30重量％以上。