公开(公告)号：US20230331894A1

公开(公告)日：2023-10-19

申请号：US18028843

申请日：2021-09-28

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Takanobu Ishizaka ,  Yoshifumi Araki ,  Shinichi Sekikawa ,  Shogo Sumitani ,  Hideki Yamasaki ,  Atsushi Yasumoto

IPC分类号： C08F297/04 ,  C08K3/36

CPC分类号： C08F297/048 ,  C08K3/36

摘要： The present invention provides a molded bale of a rubber-like block copolymer, satisfying the following requirements 1 to 6: Requirement 1: a content of a vinyl aromatic monomer unit is 9% by mass or more and 50% by mass or less; Requirement 2: a proportion of a vinyl aromatic monomer block is 3% by mass or more and less than 30% by mass; Requirement 3: an iodine value is 3 to 250; Requirement 4: a proportion of an ethylene structure is 3% by mass or more; Requirement 5: a weight average molecular weight is in a range of 80,000 to 1,000,000; and Requirement 6: at least one block at a molecular end is a specific block I or block II.

公开(公告)号：US10519254B2

公开(公告)日：2019-12-31

申请号：US15551711

申请日：2016-02-18

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Miki Kyo ,  Shinichi Sekikawa ,  Hiromi Nakafutami

IPC分类号： C08F36/14 ,  C08C19/25 ,  C08L15/00 ,  C08K3/013 ,  B60C1/00

摘要： The present invention provides a modified conjugated diene-based polymer having a weight-average molecular weight of 20×104 or more and 300×104 or less, in which the modified conjugated diene-based polymer having a molecular weight of 200×104 or more and 500×104 or less is comprised in an amount of 0.25% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer, and a shrinking factor (g′) is less than 0.64.

公开(公告)号：US20180066076A1

公开(公告)日：2018-03-08

申请号：US15551711

申请日：2016-02-18

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Miki Kyo ,  Shinichi Sekikawa ,  Hiromi Nakafutami

IPC分类号： C08C19/25 ,  B60C1/00 ,  C08K3/00

摘要： The present invention provides a modified conjugated diene-based polymer having a weight-average molecular weight of 20×104 or more and 300×104 or less, in which the modified conjugated diene-based polymer having a molecular weight of 200×104 or more and 500×104 or less is comprised in an amount of 0.25% by mass or more and 30% by mass or less based on a total amount of the modified conjugated diene-based polymer, and a shrinking factor (g′) is less than 0.64.

公开(公告)号：US10434821B2

公开(公告)日：2019-10-08

申请号：US15580927

申请日：2016-06-07

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Miki Kyo ,  Shinichi Sekikawa

IPC分类号： B60C1/00 ,  C08C19/22 ,  C08C19/25 ,  C08F36/06 ,  C08C19/44 ,  C08F236/10 ,  C08L9/00 ,  C08F4/48

摘要： In a modified conjugated diene-based polymer, a ratio of a coupling polymer, obtained by gel permeation chromatography (GPC), is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and when Mooney viscosity ML1+4 (100° C.) measured at 100° C. is represented by ML and a weight average molecular weight obtained by GPC is represented by Mw, ML≤1.8 (Mw×10−4)−31.5, and Mooney viscosity ML1+4 (100° C.) measured at 100° C. is 30 to 150.

公开(公告)号：US20190184747A1

公开(公告)日：2019-06-20

申请号：US16326523

申请日：2017-08-07

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Miki Kyo ,  Shinichi Sekikawa

IPC分类号： B60C1/00 ,  C08F236/10 ,  C08G83/00 ,  C08C19/25 ,  C08L9/06 ,  C08K3/36 ,  B60C11/00

CPC分类号： B60C1/0016 ,  B60C1/0025 ,  B60C1/0041 ,  B60C11/0008 ,  B60C2001/005 ,  C08C19/25 ,  C08F236/10 ,  C08G83/004 ,  C08K3/36 ,  C08L9/00 ,  C08L9/06 ,  C08L91/00

摘要： A modified conjugated diene-based polymer containing: having a weight average molecular weight of 20×104 or more and 300×104 or less, having a star-branched structure with a conjugated diene-based polymer chain bonded to a modifier residue, wherein the modifier residue has at least 4 silicon atoms, and alkoxy groups and/or hydroxyl groups and the conjugated diene-based polymer chain is bonded to the silicon atom, wherein the number of alkoxy groups and/or hydroxyl groups in the modifier residue is larger than the number of the silicon atoms on average.

公开(公告)号：US20220372197A1

公开(公告)日：2022-11-24

申请号：US17640906

申请日：2020-08-26

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Shinichi Sekikawa ,  Kenta Hisamura ,  Shuri Tobo ,  Shogo Sumitani ,  Miki Kyo

IPC分类号： C08F297/04 ,  C08L9/06 ,  C08K3/013

摘要： The conjugated diene-based polymer has a Mooney viscosity measured at 100° C. of 40 or more and 170 or less, has Mooney stress relaxation measured at 100° C. of 0.35 or less, and has a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more.

公开(公告)号：US20220275130A1

公开(公告)日：2022-09-01

申请号：US17632873

申请日：2020-07-22

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Shogo Sumitani ,  Kenta Hisamura ,  Shinichi Sekikawa ,  Miki Kyo ,  Shuri Tobo

IPC分类号： C08F236/10 ,  C08C19/25 ,  B60C1/00

摘要： A conjugated diene-based polymer of the present invention has a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more, has a change (ΔT) of an oxidation onset temperature caused through application of a thermal load of 11.9° C. or less, and contains an aromatic vinyl compound monomer unit.

公开(公告)号：US20180162167A1

公开(公告)日：2018-06-14

申请号：US15580927

申请日：2016-06-07

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Miki Kyo ,  Shinichi Sekikawa

IPC分类号： B60C1/00 ,  C08C19/22 ,  C08C19/25 ,  C08F36/06

CPC分类号： B60C1/0016 ,  B60C1/00 ,  B60C1/0041 ,  C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  C08F36/06 ,  C08F236/10 ,  C08F2500/04 ,  C08F2500/05 ,  C08F2500/17 ,  C08L9/00

摘要： In a modified conjugated diene-based polymer, a ratio of a coupling polymer, obtained by gel permeation chromatography (GPC), is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 70% by mass or more based on a total amount of the modified conjugated diene-based polymer, and when Mooney viscosity ML1+4 (100° C.) measured at 100° C. is represented by ML and a weight average molecular weight obtained by GPC is represented by Mw, ML 1.8 (Mw×10−4)−31.5, and Mooney viscosity ML1+4 (100° C.) measured at 100° C. is 30 to 150.

公开(公告)号：US11414503B2

公开(公告)日：2022-08-16

申请号：US16326581

申请日：2017-08-07

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Shinichi Sekikawa ,  Miki Kyo

IPC分类号： C08F36/06 ,  C08K3/36 ,  C08L9/00 ,  C08C19/25 ,  C08C19/22 ,  B60C1/00

摘要： A modified conjugated diene-based polymer, including a coupling polymer, wherein a ratio of the coupling polymer, obtained by gel permeation chromatography (GPC), is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, and a modification ratio obtained by adsorption GPC is 30% by mass or more and less than 70% by mass in the entire modified conjugated diene-based polymer, when a peak top molecular weight, obtained by the GPC, of the coupling polymer of the modified conjugated diene-based polymer is represented by Mp1 and a peak top molecular weight of a non-coupling polymer is represented by Mp2, (Mp1/Mp2)≥3.4, and a shrinking factor (g′) is less than 0.60.

公开(公告)号：US11207918B2

公开(公告)日：2021-12-28

申请号：US16326523

申请日：2017-08-07

申请人： Asahi Kasei Kabushiki Kaisha ,  Bridgestone Corporation

发明人： Miki Kyo ,  Shinichi Sekikawa

IPC分类号： C08C19/25 ,  C08L9/00 ,  C08L91/00 ,  B60C1/00 ,  C08C19/22 ,  C08C19/44 ,  C08L15/00 ,  C08L19/00 ,  B60C11/00 ,  C08F236/10 ,  C08G83/00 ,  C08K3/36 ,  C08L9/06

摘要： A modified conjugated diene-based polymer containing: having a weight average molecular weight of 20×104 or more and 300×104 or less, having a star-branched structure with a conjugated diene-based polymer chain bonded to a modifier residue, wherein the modifier residue has at least 4 silicon atoms, and alkoxy groups and/or hydroxyl groups and the conjugated diene-based polymer chain is bonded to the silicon atom, wherein the number of alkoxy groups and/or hydroxyl groups in the modifier residue is larger than the number of the silicon atoms on average.