公开(公告)号：US11174376B2

公开(公告)日：2021-11-16

申请号：US16465226

申请日：2017-11-02

申请人： ZEON CORPORATION

发明人： Shunjin Aihara ,  Junji Kodemura ,  Yoshitaka Satoh

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

摘要： 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：US20150087761A1

公开(公告)日：2015-03-26

申请号：US14361393

申请日：2012-11-28

申请人： ZEON CORPORATION

发明人： Yoshitaka Satoh ,  Osamu Ishidu ,  Yuki Emori ,  Yoshiyuki Nakamura

IPC分类号： C08J3/07

CPC分类号： C08J3/07 ,  B29C41/14 ,  B29K2009/00 ,  B29K2105/0064 ,  B29K2296/04 ,  C08J5/02 ,  C08J2309/10 ,  C08J2347/00 ,  C08J2353/02 ,  C08L9/10 ,  C08L53/02

摘要： A latex of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer with a weight average molecular weight of 10,000 to 5,000,000, a volume average particle size of 0.5 to 10 μm, and a content of a total of an alicyclic hydrocarbon solvent and aromatic hydrocarbon solvent of 500 weight ppm or less are provided.

摘要翻译： 合成聚异戊二烯和/或苯乙烯 - 异戊二烯 - 苯乙烯嵌段共聚物的胶乳，其重均分子量为10,000〜5,000,000，体积平均粒径为0.5〜10μm，脂环烃溶剂和 提供500重量ppm以下的芳烃溶剂。

公开(公告)号：US11466129B2

公开(公告)日：2022-10-11

申请号：US16486347

申请日：2018-02-09

申请人： ZEON CORPORATION

发明人： Junji Kodemura ,  Yoshitaka Satoh

IPC分类号： C08J3/09 ,  B01F23/80 ,  B01F23/41 ,  C08J3/07 ,  B01F23/40

摘要： A method for producing a synthetic rubber, the method including: an emulsification step of continuously feeding a solution or a dispersion of a synthetic rubber obtained by dissolving or dispersing the synthetic rubber in an organic solvent and an aqueous solution of an emulsifier to a mixer and mixing to continuously obtain an emulsion; a first removal step of removing the organic solvent from the emulsion continuously obtained in the emulsification step in a container while the emulsion is continuously transferred to the container regulated to a pressure condition of 700 to 760 mmHg; and a second removal step of removing the organic solvent from the emulsion that has undergone the first removal step under a pressure of less than 700 mmHg.

公开(公告)号：US11084918B2

公开(公告)日：2021-08-10

申请号：US16346857

申请日：2017-11-02

申请人： ZEON CORPORATION

发明人： Junji Kodemura ,  Shunjin Aihara ,  Yoshitaka Satoh

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

摘要： 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：US11958969B2

公开(公告)日：2024-04-16

申请号：US17271273

申请日：2019-08-15

申请人： ZEON CORPORATION

发明人： Junji Kodemura ,  Yoshitaka Satoh

IPC分类号： C08L53/02 ,  B29C41/00 ,  B29C41/14 ,  B29L31/00 ,  C08F236/08 ,  C08J5/18 ,  C08K5/14 ,  C09J153/02

CPC分类号： C08L53/02 ,  B29C41/003 ,  B29C41/14 ,  C08F236/08 ,  C08J5/18 ,  C08K5/14 ,  C09J153/02 ,  B29L2031/712 ,  C08L2201/52 ,  C08L2203/16

摘要： A latex of a styrene-based block copolymer includes a styrene-based block copolymer and water. The styrene-based block copolymer includes a toluene insoluble content of 30 to 95 wt %. The latex of the styrene-based block copolymer is superior in the processability and can provide a molded film such as a dip-molded product having the high tear strength, the high stress retention and the soft texture.

公开(公告)号：US11466106B2

公开(公告)日：2022-10-11

申请号：US16975967

申请日：2019-02-22

申请人： ZEON CORPORATION

发明人： Yoshitaka Satoh ,  Hidetake Ishii ,  Junji Kodemura

IPC分类号： C08F255/10 ,  C08F8/46 ,  C08F236/08 ,  C08F297/04 ,  C08F220/06 ,  C08F222/02 ,  C08F36/08 ,  C08J5/18 ,  C09J147/00 ,  C09J153/02 ,  C08F220/04

摘要： A latex of an acid-modified conjugated diene polymer including the acid-modified conjugated diene polymer obtained by modifying a conjugated diene polymer with an acid group-containing compound, in which a content of a structural unit derived from the acid group-containing compound is 0.2 to 0.7 parts by weight with respect to 100 parts by weight of the acid-modified conjugated diene polymer; a content of a water-soluble polymer in the latex is 2 parts by weight or less with respect to 100 parts by weight of the acid-modified conjugated diene polymer; when a solids content of the latex is adjusted to 60 wt %, a viscosity at 25° C. is 800 mPa·s or less; and when the solids content of the latex is adjusted to 50 wt %, the viscosity at 25° C. is 300 mPa·s or less.

公开(公告)号：US11465788B2

公开(公告)日：2022-10-11

申请号：US16335375

申请日：2017-09-19

申请人： ZEON CORPORATION

发明人： Yoshitaka Satoh

IPC分类号： B65B11/50 ,  A61F13/00 ,  B65B55/02 ,  A61F15/00 ,  B65B55/08 ,  C08J3/09 ,  C08L9/10 ,  A61F13/02 ,  C09J109/00 ,  C09J193/04 ,  C09J109/08 ,  A61B50/30

摘要： A method of producing a packaging structure, including the steps: coating at least one surface of a first sheet base material and/or a second sheet base material with a synthetic polyisoprene latex having a weight average molecular weight of 500,000 -5,000,000 and/or a styrene-isoprene-styrene block copolymer having a weight average molecular weight of 100,000-300,000, sandwiching an article to be packaged in a state wherein the first and second sheet base material are in contact with each other via a latex coated surface formed on the first and/or second sheet base material to thereby obtain a laminated body, pressing a portion where at least the first and second sheet base material of the laminated body are in contact with each other via the latex coated surface at a temperature of 100° C. or less to thereby obtain a pressed laminated body, and performing a sterilization treatment on the pressed laminated body.

公开(公告)号：US11192983B2

公开(公告)日：2021-12-07

申请号：US16753578

申请日：2018-10-04

申请人： ZEON CORPORATION

发明人： Junji Kodemura ,  Yoshitaka Satoh

IPC分类号： C08C19/08 ,  C08J3/07 ,  B29C41/00 ,  B29C41/14 ,  C08F236/08 ,  B29K105/00

摘要： A method for producing a polymer latex includes: a preparation step of reducing the weight average molecular weight of a conjugated diene polymer (A) by 20 to 70 mass %, thereby obtaining an organic solvent solution containing a conjugated diene polymer (B) having a weight average molecular weight lower than that of the conjugated diene polymer (A); and an emulsification step of emulsifying the organic solvent solution in water in the presence of a surfactant, thereby obtaining a polymer latex.

公开(公告)号：US10774201B2

公开(公告)日：2020-09-15

申请号：US16077567

申请日：2017-03-02

申请人： ZEON CORPORATION

发明人： Yoshitaka Satoh ,  Junji Kodemura

IPC分类号： C08L9/00 ,  C08J3/07 ,  C08L53/02 ,  C08L9/10 ,  C09J109/10 ,  C08L9/08 ,  B01F3/08 ,  C08K5/00 ,  B01F7/00 ,  A41D19/00 ,  A41D13/08

摘要： A latex of a synthetic rubber, wherein the content rate of a particle having a particle size of 5 μm or more in a particle size distribution of a synthetic rubber particle included in the latex, as determined on a number basis, is less than 3,000 ppm by weight. A latex of a synthetic rubber is excellent in mechanical stability and can provide a film molded article such as a dip molded article excellent in tensile strength and elongation.

公开(公告)号：US12110358B2

公开(公告)日：2024-10-08

申请号：US16346864

申请日：2017-11-02

申请人： ZEON CORPORATION

发明人： Junji Kodemura ,  Shunjin Aihara ,  Yoshitaka Satoh

IPC分类号： 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分类号： 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

摘要： 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.