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1. 发明申请

US20230111050A1 BLOCK-COPOLYMER PELLETS, TACKY ADHESIVE COMPOSITION, AND STRETCH FILM 有权
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.

2. 发明申请

US20210403631A1 BLOCK COPOLYMER, BLOCK COPOLYMER COMPOSITION, HOT MELT PRESSURE-SENSITIVE ADHESIVE COMPOSITION, AND PRESSURE-SENSITIVE ADHESIVE COMPOSITION 有权
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.

3. 发明申请

US20200255607A1 MULTI-BLOCK COPOLYMER COMPOSITION OBTAINED BY MODIFICATION TREATMENT, AND FILM 审中-公开
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.

4. 发明申请

US20180258328A1 BLOCK COPOLYMER COMPOSITION AND HOT MELT ADHESIVE COMPOSITION 审中-公开
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.

5. 发明申请

US20230060226A1 PRESSURE-SENSITIVE ADHESIVE COMPOSITION 有权
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.

6. 发明申请

US20200255650A1 MODIFIED BLOCK COPOLYMER COMPOSITION 审中-公开
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.

7. 发明申请

US20200062948A1 BLOCK COPOLYMER COMPOSITION OBTAINED BY MODIFICATION TREATMENT, METHOD FOR PRODUCING SAME, MODIFIED BLOCK COPOLYMER COMPOSITION USED FOR SAME, AND METHOD FOR PRODUCING SAID MODIFIED BLOCK COPOLYMER COMPOSITION 审中-公开
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.

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