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1. 发明申请

US20180118898A1 METHOD FOR PRODUCING MASTERBATCH 有权
公开(公告)号：US20180118898A1
公开(公告)日：2018-05-03
申请号：US15787160
申请日：2017-10-18
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Sumiko MIYAZAKI
IPC分类号： C08J3/22 , C08K3/00 , C08J5/04 , C08L9/00 , B60C1/00
CPC分类号： C08J3/226 , B60C1/00 , C08J3/203 , C08J3/22 , C08J5/02 , C08J5/045 , C08J2307/02 , C08K3/013 , C08L9/00 , C08L21/02
摘要： The present invention provides a method for producing a masterbatch and related products which enhance the dispersibility of fillers in rubber to improve the balance of tensile strength, rigidity, and fuel economy. Provided is a method for producing a masterbatch, including a step of mixing a rubber latex having a zeta potential of −100 to −20 mV with a filler dispersion having a zeta potential of 10 to 90 mV, and preparing a latex compound having a zeta potential of −20 to 0 mV.

2. 发明申请

US20140213700A1 RUBBER COMPOSITION AND PNEUMATIC TIRE 有权
标题翻译：橡胶组合物和气动轮胎
公开(公告)号：US20140213700A1
公开(公告)日：2014-07-31
申请号：US14148427
申请日：2014-01-06
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Tatsuya MIYAZAKI , Sumiko MIYAZAKI
IPC分类号： C08L15/00
CPC分类号： C08L7/02 , B60C1/00 , C08K7/02 , C08L9/00 , C08L33/00 , C08L2205/16 , C08L2310/00
摘要： Provided are a rubber composition in which microfibrillated plant fibers are sufficiently uniformly dispersed to improve tire performance requirements in a balanced manner, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition formed from a masterbatch containing a rubber latex and microfibrillated plant fibers, the masterbatch being obtained by stirring the microfibrillated plant fibers in a solvent with a circulation type or continuous homogenizer and mixing the resulting microfibrillated plant fiber solution with the rubber latex and a cationic polymer, the microfibrillated plant fibers having a mean fiber length of 10 to 150 μm, the microfibrillated plant fiber solution containing 0.1 to 2.0% by mass of the microfibrillated plant fibers, and the amount of the cationic polymer being 0.01 to 5 parts by mass per 100 parts by mass of the rubber component of the rubber latex.
摘要翻译：提供了一种橡胶组合物，其中微纤化植物纤维被充分均匀地分散以平衡地提高轮胎性能要求，以及由橡胶组合物形成的充气轮胎。本发明涉及由含有橡胶胶乳和微纤化植物纤维的母料形成的橡胶组合物，母料通过在循环型或连续均化器中将溶剂中的微纤化植物纤维搅拌并将所得微纤化植物纤维溶液与橡胶胶乳和阳离子聚合物，平均纤维长度为10〜150μm的微纤化植物纤维，含有0.1〜2.0质量％的微纤化植物纤维的微纤化植物纤维溶液，阳离子聚合物的量为0.01 至每100质量份橡胶胶乳的橡胶组分为5质量份。

3. 发明申请

US20220380578A1 NANOCELLULOSE/SURFACTANT COMPOSITE 有权
公开(公告)号：US20220380578A1
公开(公告)日：2022-12-01
申请号：US17881852
申请日：2022-08-05
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Sumiko MIYAZAKI , Daisuke SATO
IPC分类号： C08L1/02 , C08L7/00
摘要： The present invention provides nanocellulose/surfactant composites having excellent redispersibility in water and related compositions and methods, including methods for producing the composites. Included is a nanocellulose/surfactant composite containing a nanocellulose and a surfactant, the nanocellulose/surfactant composite having a moisture content of lower than 10%, the surfactant including an ionic surfactant having a weight average molecular weight of 3000 or more.

4. 发明申请

US20190002671A1 RUBBER COMPOSITION AND PNEUMATIC TIRE 审中-公开
公开(公告)号：US20190002671A1
公开(公告)日：2019-01-03
申请号：US15994173
申请日：2018-05-31
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Daisuke SATO , Sumiko MIYAZAKI
IPC分类号： C08L9/06 , B60C1/00
摘要： The present invention provides a rubber composition which provides a balanced improvement of initial wet grip performance, wet grip performance after aging, fuel economy, and abrasion resistance. Also provided is a pneumatic tire formed from the rubber composition. The rubber composition contains: a rubber component including a diene rubber; and a glycerol fatty acid triester of plant origin. The glycerol fatty acid triester has a content of saturated fatty acids of 10 to 25% by mass and a content of monovalent unsaturated fatty acids having one unsaturated bond of less than 50% by mass, each based on 100% by mass of the constituent fatty acids of the triester.

5. 发明申请

US20190338084A1 MASTER BATCH PRODUCTION METHOD 审中-公开
公开(公告)号：US20190338084A1
公开(公告)日：2019-11-07
申请号：US16480139
申请日：2018-01-19
申请人： SUMITOMO RUBBER INDUSTRIES, LTD. , NIPPON PAPER INDUSTRIES CO., LTD.
发明人： Sumiko MIYAZAKI , Takafumi KAWASAKI , Kotaro ITO , Yusuke YASUKAWA
IPC分类号： C08J3/22 , C08L7/00 , B60C1/00
摘要： The present invention aims to provide a method for producing a masterbatch with improved rubber physical properties such as tensile strength at break, rigidity, and fuel economy at high productivity by enhancing the amount of fillers incorporated into rubber and the dispersibility of fillers in rubber, as well as related products. The present invention relates to a method for producing a masterbatch, including: step (1) of mixing a rubber latex having a zeta potential of −100 to −20 mV with a filler dispersion having a zeta potential of −120 to −10 mV to prepare a latex compound; step (2) of adjusting the zeta potential of the latex compound obtained in step (1) to −30 to 0 mV; and step (3) of solidifying the coagulum obtained in step (2) with an organic solvent.

6. 发明申请

US20180099528A1 RUBBER COMPOSITION FOR STUDLESS WINTER TIRES, AND STUDLESS WINTER TIRE 审中-公开
公开(公告)号：US20180099528A1
公开(公告)日：2018-04-12
申请号：US15718864
申请日：2017-09-28
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Kenya WATANABE , Sumiko MIYAZAKI
IPC分类号： B60C1/00 , C08L7/00 , C08L9/00
CPC分类号： B60C1/0016 , B60C1/00 , B60C11/005 , B60C2001/0083 , C08L7/00 , C08L9/00
摘要： Provided are a rubber composition for studless winter tires that can improve not only performance on snow and ice but also abrasion resistance, thereby simultaneously achieving excellent performance on snow and ice and excellent abrasion resistance, and a studless winter tire formed from the rubber composition. The rubber composition for studless winter tires contains: a rubber component; a chemically modified microfibrillated cellulose; carbon black; and silica, the chemically modified microfibrillated cellulose having an average fiber diameter of 0.1 μm or less, the rubber component having a combined amount of natural rubber and polybutadiene rubber of 30-100% by mass based on 100% by mass of the rubber component, the rubber composition containing, per 100 parts by mass of the rubber component, 1-10 parts by mass of the chemically modified microfibrillated cellulose, 10-80 parts by mass of the carbon black, and 10-80 parts by mass of the silica.

7. 发明申请

US20180016402A1 METHOD FOR PRODUCING MASTER BATCH, MASTER BATCH OBTAINED BY SAID PRODUCTION METHOD, RUBBER COMPOSITION FOR TIRE, AND PNEUMATIC TIRE 审中-公开
公开(公告)号：US20180016402A1
公开(公告)日：2018-01-18
申请号：US15547215
申请日：2016-02-09
申请人： SUMITOMO RUBBER INDUSTRIES, LTD. , NIPPON PAPER INDUSTRIES CO., LTD.
发明人： Sumiko MIYAZAKI , Takahiro MABUCHI , Takafumi KAWASAKI , Takeshi NAKAYAMA , Takeshi FUJII
IPC分类号： C08J3/22 , C08L7/00 , C08L7/02 , C08L9/00
摘要： The present invention provides, inter alia, a method for producing a masterbatch in which the dispersibility of microfibrillated plant fibers is further increased to obtain excellent processability and improved rubber properties such as fuel economy, tensile strength, and elongation at break. The present invention relates to a method for producing a masterbatch, the method including step (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6.

8. 发明申请

US20160272792A1 RUBBER COMPOSITION AND TIRE 有权
标题翻译：橡胶组合物和轮胎
公开(公告)号：US20160272792A1
公开(公告)日：2016-09-22
申请号：US15055025
申请日：2016-02-26
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Sumiko MIYAZAKI
IPC分类号： C08L7/00 , C08L19/00 , C08L9/06 , C08L9/00
CPC分类号： C08L7/00 , C08K3/04 , C08K3/06 , C08K3/22 , C08K5/09 , C08K5/18 , C08K5/47 , C08L1/02 , C08L1/10 , C08L9/00 , C08L9/06 , C08L19/00 , C08L23/22 , C08L91/00 , C08L2205/03 , C08L2666/26 , Y02T10/862
摘要： Provided are a rubber composition that is environmentally friendly and achieves both excellent breaking properties and low energy loss, and a tire that includes a component prepared using the same and is environmentally friendly and excellent in rolling resistance properties and durability. The present invention provides a rubber composition containing a rubber component, a specific chemically modified microfibrillated cellulose, and carbon black.
摘要翻译：提供一种环保的橡胶组合物，能够实现优异的断裂性能和低能量损失，以及包含使用该橡胶组合物制备的环氧树脂，耐滚动性和耐久性优异的组分的轮胎。本发明提供含有橡胶成分，特定化学改性微纤化纤维素和炭黑的橡胶组合物。

9. 发明申请

US20190119473A1 RUBBER COMPOSITION AND PNEUMATIC TIRE 审中-公开
公开(公告)号：US20190119473A1
公开(公告)日：2019-04-25
申请号：US16085285
申请日：2017-03-15
申请人： SUMITOMO RUBBER INDUSTRIES, LTD. , NIPPON PAPER INDUSTRIES CO., LTD.
发明人： Sumiko MIYAZAKI , Kenya WATANABE , Takafumi KAWASAKI , Kotaro ITO
IPC分类号： C08L7/00 , B60C1/00 , C08L9/00
摘要： The present invention aims to provide a rubber composition which has further enhanced dispersion of microfibrillated cellulose in rubber to provide excellent processability and further to provide excellent rigidity, tensile properties, and fuel economy while maintaining a good balance between them. The present invention also aims to provide a pneumatic tire formed from the rubber composition with high productivity which provides excellent handling stability, durability, and rolling resistance properties while maintaining a good balance between them. The rubber composition of the present invention contains: a rubber component; a chemically modified microfibrillated cellulose; and a filler, the chemically modified microfibrillated cellulose having a structure in which the hydroxyl hydrogen atoms of microfibrillated cellulose are partly substituted with a cationic group of a cationic group-containing compound.

10. 发明申请

US20190040236A1 RUBBER COMPOSITION AND PNEUMATIC TIRE 审中-公开
公开(公告)号：US20190040236A1
公开(公告)日：2019-02-07
申请号：US16026726
申请日：2018-07-03
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Daisuke SATO , Sumiko MIYAZAKI
IPC分类号： C08L7/00 , C08L9/00 , B60C1/00
摘要： Provided are a rubber composition having good fuel economy and good rubber strength while maintaining good appearance, and a pneumatic tire formed from the rubber composition. The rubber composition contains: a rubber component including a diene rubber; a reinforcing filler; and a glycerol fatty acid triester of plant origin. The diene rubber includes an isoprene-based rubber. The glycerol fatty acid triester has a content of saturated fatty acids of 10 to 25% by mass and a content of monovalent unsaturated fatty acids having one unsaturated bond of less than 50% by mass, each based on 100% by mass of the constituent fatty acids of the triester. The reinforcing filler is present in an amount of 50 parts by mass or less per 100 parts by mass of the rubber component.

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