公开(公告)号：US20200255607A1

公开(公告)日：2020-08-13

申请号：US16642897

申请日：2018-08-23

申请人： ZEON CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Kousuke ISOBE ,  Sadaharu HASHIMOTO ,  Atsushi NOZAWA ,  Atsushi NORO ,  Takato KAJITA ,  Yushu MATSUSHITA

IPC分类号： C08J5/18 ,  C08F297/08

摘要： A main purpose of the present invention is to provide a multi-block copolymer composition having good elasticity and excellent stress relaxation properties, as well as small tension set. The present invention achieves the purpose by providing a multi-block copolymer composition obtained by a modification treatment, the composition including a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond to a block copolymer A; wherein the block copolymer A includes a block copolymer A1 having a specific primary structure and a block copolymer A2 having a specific primary structure, and the mass ratio (A1/A2) of the block copolymer A1 and the block copolymer A2 is 100/0 to 50/50.

公开(公告)号：US20200062948A1

公开(公告)日：2020-02-27

申请号：US16609836

申请日：2018-05-01

申请人： ZEON CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Kousuke ISOBE ,  Sadaharu HASHIMOTO ,  Atsushi NOZAWA ,  Ryoji KAMEYAMA ,  Atsushi NORO ,  Takato KAJITA ,  Yushu MATSUSHITA

IPC分类号： C08L53/02

摘要： A main object of the present invention is to provide a block copolymer composition which has good elasticity, while having excellent stress relaxation properties. The object is achieved by providing a block copolymer composition obtained by a modification treatment, the block copolymer composition comprising a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond into a block copolymer A including at least one aromatic vinyl polymer block and at least one conjugated diene polymer block.

公开(公告)号：US20230111050A1

公开(公告)日：2023-04-13

申请号：US17904593

申请日：2021-02-17

申请人： ZEON CORPORATION

发明人： Yuta ISHII ,  Atsushi NOZAWA

IPC分类号： C08L53/02 ,  C08L23/06 ,  C09J7/30 ,  C08J3/12

摘要： A block-copolymer pellet having 100 parts by weight of a pellet-shaped article of a block copolymer (A) and 0.01 to 5 parts by weight of a hydrocarbon-based dusting agent (B) is provided, wherein the block copolymer (A) has at least one aromatic vinyl polymer block and at least one conjugated diene polymer block, the hydrocarbon-based dusting agent (B) has a BET specific surface area of 0.50 to 3.00 m2/g, a volume average particle size of 2.0 to 20 μm, a bulk density of 0.10 to 0.34 g/cm3, and a melting point of 75° C. or higher, and the block-copolymer pellet has a Shore A hardness of 10 to 80, and a BET specific surface area of 0.001 to 0.05 m2/g measured by a Kr adsorption method.

公开(公告)号：US20210403631A1

公开(公告)日：2021-12-30

申请号：US17292964

申请日：2019-11-20

申请人： ZEON CORPORATION

发明人： Atsushi NOZAWA

IPC分类号： C08F297/04 ,  C08L53/02 ,  C09J153/02

摘要： There is provided a block copolymer A which is represented by a following general formula (I), wherein a ratio ((Ar1-D1)/D2) of a mass of a branched chain represented by Ar1-D1 to a mass of a branched chain represented by D2 is 1.0/0.15 to 1.0/1.75, (Ar1-D1)mX(D2)n  (I) where, in the formula (I), Ar1-D1 and D2 are each a branched chain bonded to X, Ar1 is an aromatic monovinyl polymer block, D1 and D2 are each a conjugated diene polymer block, “m” is an integer of 1 or more, “n” is an integer of 1 or more, “m”+“n” is an integer of 3 or more, and X is a residue of a polyfunctional coupling agent.

公开(公告)号：US20180258328A1

公开(公告)日：2018-09-13

申请号：US15761233

申请日：2016-09-16

申请人： ZEON CORPORATION

发明人： Atsushi NOZAWA ,  Sadaharu HASHIMOTO

IPC分类号： C09J153/02 ,  C08L53/02 ,  C08F297/04

摘要： A main object of the present disclosure is to provide a block copolymer composition that allows a hot melt adhesive composition having excellent hot melt properties and heat resistance stability to be obtained. The object is achieved by providing a block copolymer composition comprising a block copolymer A including an Ar1-D1 diblock as a branched chain, the block copolymer A represented by the following general formula (I), characterized in that: a molecular weight distribution (Mw/Mn) of the block copolymer A is 1.20 or less; a content of the block copolymer A in the block copolymer composition is 10% by mass or more; a content of a block copolymer B corresponding to an Ar2-D2 diblock represented by the following general formula (II), in the block copolymer composition is 60% by mass or less, and a molecular weight distribution (Mw/Mn) of the block copolymer B is 1.15 or less; a content of an aromatic monovinyl monomer unit in the block copolymer composition is in a range of 12% by mass to 30% by mass; a weight average molecular weight (Mw) of the entire block copolymer composition is in a range of 300000 to 800000; and a melt index (G condition) of the entire block copolymer composition is in a range of 2 g/10 min to 20 g/10 min.

公开(公告)号：US20230060226A1

公开(公告)日：2023-03-02

申请号：US17759298

申请日：2021-01-21

申请人： ZEON CORPORATION

发明人： Takuro SAKURAI ,  Atsushi NOZAWA

IPC分类号： C09J123/08 ,  C09J11/06 ,  C09J11/08

摘要： Provided is an adhesive composition having high holding power. Provided is an adhesive composition comprising a ring-opened copolymer containing a structural unit derived from a monocyclic olefin and a structural unit derived from a polycyclic olefin; and a tackifying resin.

公开(公告)号：US20200255650A1

公开(公告)日：2020-08-13

申请号：US16649663

申请日：2018-09-27

申请人： ZEON CORPORATION

发明人： Atsushi NOZAWA ,  Sadaharu HASHIMOTO

IPC分类号： C08L53/02 ,  C08F230/08 ,  C09J7/35 ,  C08K5/00 ,  C08F236/10

摘要： The present invention provides a modified block copolymer composition comprising a modified block copolymer containing at least one aromatic vinyl polymer block and at least one conjugated diene polymer block, and having at least one modified terminal modified with a compound having a silicon atom and an acrylic group and/or a methacrylic group.