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：US11118038B2

公开(公告)日：2021-09-14

申请号：US16337244

申请日：2017-09-19

申请人： ZEON CORPORATION

发明人： Masatoshi Ishiba ,  Takashi Iga ,  Junji Kodemura

IPC分类号： C08L9/10 ,  C08J5/02 ,  C08K5/103 ,  C08L21/02 ,  D21H17/35

摘要： A latex composition containing a conjugated diene polymer latex and a medium-chain fatty acid glyceride, wherein a content proportion of the medium-chain fatty acid glyceride is 1 to 40 parts by weight with respect to 100 parts by weight of the conjugated diene polymer. In the present invention, a medium-chain fatty acid forming the medium-chain fatty acid glyceride is preferably a fatty acid having 6 to 18 carbon atoms. In the present invention, the medium-chain fatty acid glyceride is preferably a medium-chain fatty acid triglyceride. The latex composition preferably further contains a crosslinking agent.

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.

公开(公告)号：US11898024B2

公开(公告)日：2024-02-13

申请号：US16482069

申请日：2018-02-09

申请人： ZEON CORPORATION

发明人： Shunjin Aihara ,  Junji Kodemura

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

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

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

公开(公告)号：US11884761B2

公开(公告)日：2024-01-30

申请号：US16639259

申请日：2018-08-22

申请人： ZEON CORPORATION

发明人： Junji Kodemura ,  Misa Hayashi

IPC分类号： C08K5/38 ,  C08L15/00 ,  C08F279/02 ,  C09J147/00 ,  C08K3/105 ,  C08K3/26 ,  C08K3/30

CPC分类号： C08F279/02 ,  C08K5/38 ,  C08L15/00 ,  C09J147/00 ,  C08K3/105 ,  C08K3/26 ,  C08K3/30 ,  C08K2003/309

摘要： A latex composition containing a carboxy-modified polymer latex, a xanthogen compound, and a typical metal compound in a form other than an oxide. This latex composition has excellent stability, can avoid delayed (Type IV) allergic reactions in addition to immediate (Type I) allergic reactions, and can provide a molded film, such as a dip-molded product, having excellent tear strength and tensile strength. Also a molded film and a substrate with an adhesive layer which are obtained using the latex composition.

公开(公告)号：US11034799B2

公开(公告)日：2021-06-15

申请号：US16077612

申请日：2017-02-16

申请人： ZEON CORPORATION

发明人： Masatoshi Ishiba ,  Shunjin Aihara ,  Junji Kodemura

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

摘要： 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：US10934399B2

公开(公告)日：2021-03-02

申请号：US16071997

申请日：2017-01-26

申请人： ZEON CORPORATION

发明人： Hidetake Ishii ,  Junji Kodemura

IPC分类号： C08J3/07 ,  C08L53/02 ,  B29C41/00 ,  C08J5/02 ,  C08F36/08 ,  C08C1/075 ,  B60C1/00 ,  C08F297/04 ,  C08F6/20 ,  C08J3/05 ,  C08K5/098 ,  B29C41/14

摘要： A method for producing a polymer latex, including an emulsification step of emulsifying a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer having a molecular weight distribution of 1.0 to 2.6 in an organic solvent, in water in the presence of a surfactant, to thereby obtain an emulsified liquid, wherein as the synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer, used are/is synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer which, when dissolved in an organic solvent to thereby be formed into a polymer solution having a viscosity at a temperature of 60° C. of 20,000 cps, have/has a solid content concentration in the range of 10 to 60% by weight.

公开(公告)号：US10759926B2

公开(公告)日：2020-09-01

申请号：US16071921

申请日：2017-01-26

申请人： ZEON CORPORATION

发明人： Hidetake Ishii ,  Junji Kodemura

IPC分类号： C08L9/10 ,  B29C41/14 ,  C08J3/07 ,  C08K5/375 ,  C08F236/10 ,  C08J5/02 ,  C08F297/04 ,  C08L9/00 ,  C08K3/30 ,  C08F136/08 ,  C08K5/13 ,  C08L53/00 ,  C08K5/00 ,  B29C41/00 ,  C08L53/02 ,  B29K105/00

摘要： A polymer latex, including a polymerization step of polymerizing a monomer in organic solvent to thereby obtain polymer solution of synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer, antioxidant addition step of adding antioxidant to the polymer solution of synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer at proportion of 0.01-1.00 parts by weight per 100 parts by weight of the synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer, and emulsification step of emulsifying the polymer solution which the antioxidant is added, in water in the presence of a surfactant, to thereby obtain polymer latex, wherein the emulsification performs in the emulsification step so the ratio D75/D25 of the volume particle size D75 at a cumulative frequency of 75% to the volume particle size D25 at a cumulative frequency of 25% of a particle of the synthetic polyisoprene and/or styrene-isoprene-styrene block copolymer included in the polymer latex is 1.90 or more and 2.30 or less.

公开(公告)号：US11976180B2

公开(公告)日：2024-05-07

申请号：US17274277

申请日：2019-08-01

申请人： ZEON CORPORATION

发明人： Misa Hayashi ,  Junji Kodemura

IPC分类号： C08C19/36 ,  C08K5/38 ,  C08L15/00 ,  C08L71/02

CPC分类号： C08L15/00 ,  C08C19/36 ,  C08K5/38 ,  C08K2201/005 ,  C08L71/02 ,  C08L2201/54 ,  C08L2203/16 ,  C08L2203/30

摘要： A xanthogen compound dispersion is formed by dispersing a xanthogen compound in water or alcohol, wherein a volume average particle size of the xanthogen compound is 0.001 to 9 μm.

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.