公开(公告)号：US11292862B2

公开(公告)日：2022-04-05

申请号：US16491306

申请日：2018-03-05

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Koichi Hasebe ,  Ryo Suzuki ,  Hiromi Nakafutami

IPC分类号： C08F236/10 ,  C08L21/00

摘要： A modified conjugated diene-based polymer having a weight average molecular weight of 20×104 or more and 300×104 or less, and having a molecular weight distribution Mw/Mn of 1.6 or more and 4.0 or less, wherein a modification ratio with respect to a total amount of the conjugated diene-based polymer is 50% by mass or more, a modification ratio of a component having a molecular weight which is ½ of a molecular weight at a peak top, or a peak top of the minimum molecular weight when a plurality of the peak tops of molecular weights is present, in a gel permeation chromatography curve is ½ or more of the modification ratio with respect to the total amount of the conjugated diene-based polymer, and a content of nitrogen contained in the modified conjugated diene-based polymer is 3 mass ppm or more and 70 mass ppm or less.

公开(公告)号：US20200031975A1

公开(公告)日：2020-01-30

申请号：US16491306

申请日：2018-03-05

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Koichi Hasebe ,  Ryo Suzuki ,  Hiromi Nakafutami

IPC分类号： C08F236/10 ,  C08L21/00

摘要： A modified conjugated diene-based polymer having a weight average molecular weight of 20×104 or more and 300×104 or less, and having a molecular weight distribution Mw/Mn of 1.6 or more and 4.0 or less, wherein a modification ratio with respect to a total amount of the conjugated diene-based polymer is 50% by mass or more, a modification ratio of a component having a molecular weight which is ½ of a molecular weight at a peak top, or a peak top of the minimum molecular weight when a plurality of the peak tops of molecular weights is present, in a gel permeation chromatography curve is ½ or more of the modification ratio with respect to the total amount of the conjugated diene-based polymer, and a content of nitrogen contained in the modified conjugated diene-based polymer is 3 mass ppm or more and 70 mass ppm or less.

公开(公告)号：US11225534B2

公开(公告)日：2022-01-18

申请号：US16608449

申请日：2018-04-26

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Koichi Hasebe ,  Ryo Suzuki ,  Hiromi Nakafutami

IPC分类号： C08C19/25 ,  C08K3/013 ,  C08F236/10

摘要： A modified conjugated diene-based polymer according to the present invention has a weight average molecular weight of 20×104 or more and 300×104 or less, has a molecular weight distribution Mw/Mn of 1.6 or more and 4.0 or less, has a modification ratio of 30% by mass or more and 80% by mass or less with respect to a total amount of the conjugated diene-based polymer, and includes 5% by mass or more and 50% by mass or less of a component having a molecular weight of 1,000,000 or more and 5,000,000 or less in GPC (gel permeation chromatography), wherein a modification ratio of the component having a molecular weight of 1,000,000 or more and 5,000,000 or less is 90% by mass or more and 100% by mass or less.

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.