公开(公告)号：US09676881B2

公开(公告)日：2017-06-13

申请号：US15300766

申请日：2015-02-19

申请人： UBE INDUSTRIES, LTD.

发明人： Mitsuharu Ambe ,  Yuuto Kanou ,  Takeshi Shoda

IPC分类号： C08F136/06 ,  C08F4/602 ,  C08F4/70 ,  C08F36/06

CPC分类号： C08F136/06 ,  C08F4/6022 ,  C08F4/70 ,  C08F36/06 ,  C08F4/7096

摘要： The present invention provides a polybutadiene having improved workability and abrasion resistance. A polybutadiene according to the present invention has: (A) a Mooney viscosity (ML1+4,100° C.) being 43 or more; (B) a ratio (Tcp/ML1+4,100° C.) of 5 wt % toluene solution viscosity (Tcp) to Mooney viscosity (ML1+4,100° C.) being 0.9 to 2.3; (C) a stress relaxation time (T80) being 10.0 to 40.0 seconds, which is a time until a torque is attenuated by 80% when the torque at the end of ML1+4,100° C.measurement is 100%; and (D) a molecular weight distribution (Mw/Mn) being 2.50 to 4.00.

公开(公告)号：US10377883B2

公开(公告)日：2019-08-13

申请号：US15128406

申请日：2015-02-19

申请人： UBE INDUSTRIES, LTD. ,  SUMITOMO RUBBER INDUSTRIES, LTD.

发明人： Mitsuharu Ambe ,  Yuuto Kanou ,  Takeshi Shoda ,  Takahiro Mabuchi ,  Toshifumi Haba

IPC分类号： C08L9/06 ,  B60C1/00 ,  C08F36/06 ,  C08L7/00 ,  C08L9/00 ,  C08F4/70

摘要： The present invention provides a rubber composition for a tire having improved workability and abrasion resistance. A rubber composition for a tire according to the present invention comprises: a polybutadiene which has: (A) a Mooney viscosity (ML1+4,100° C.) being 43 or more; (B) a ratio (Tcp/ML1+4,100° C.) of 5 wt % toluene solution viscosity (Tcp) to Mooney viscosity (ML1+4,100° C.) being 0.9 to 2.3; (C) a stress relaxation time (T80) being 10.0 to 40.0 seconds, which is a time until a torque is attenuated by 80% when the torque at the end of ML1+4,100° C. measurement is 100%; and (D) a molecular weight distribution (Mw/Mn) being 2.50 to 4.00; another rubber (ii); and a rubber reinforcing material (iii).

公开(公告)号：US20160009834A1

公开(公告)日：2016-01-14

申请号：US14772163

申请日：2014-03-07

申请人： UBE INDUSTRIES, LTD.

发明人： Michinori Suzuki ,  Yuuki Takahashi ,  Masato Murakami ,  Masanobu Kimura ,  Naomi Okamoto ,  Yuuto Kanou

IPC分类号： C08F136/06 ,  C08K3/36

CPC分类号： C08F136/06 ,  C08C19/44 ,  C08F8/00 ,  C08K3/36 ,  C08F4/545

摘要： A modified conjugated diene polymer and a method for producing the same. A rubber composition using the same. A modified conjugated diene polymer obtained by polymerizing a conjugated diene compound using a catalyst including from (A) an yttrium compound having a bulky ligand represented by general formula (1), (B) an ionic compound formed of a non-coordinating anion and a cation, and (C) an organic metal compound of an element selected from the group consisting of group 2, group 12 and group 13 of the periodic table and modifying the conjugated diene polymer with a carbonyl compound, a method for producing the same, and a rubber composition using the same.

摘要翻译： 改性共轭二烯聚合物及其制造方法。 使用其的橡胶组合物。 通过使用包含（A）具有由通式（1）表示的大体积配体的钇化合物的催化剂，（B）由非配位阴离子形成的离子性化合物和 阳离子，和（C）选自元素周期表的第2族，第12族和第13族的元素的有机金属化合物，并用羰基化合物改性共轭二烯聚合物，其制备方法和 使用其的橡胶组合物。