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公开(公告)号：US20210017393A1
公开(公告)日：2021-01-21
申请号：US15999830
申请日：2016-04-07
Applicant: TOKAI CARBON CO., LTD.
Inventor： Kengo Kurisu
Abstract: It is intended to provide a carbon black which can confer reinforcing properties and low exothermicity, which are usually incompatible, as well as excellent abrasion resistance, when mixed with a rubber component, and is suitable for tire tread rubber that is used particularly under severe driving conditions.
The present invention provides a carbon black having surface free energy γd of 50 to 200 mJ/m2 determined by a reverse-phase gas chromatography analysis method and a strongly acidic group concentration of 0 to 0.115 μmol/m2.-
公开(公告)号：US20220195200A1
公开(公告)日：2022-06-23
申请号：US17602551
申请日：2020-03-26
Applicant: TOKAI CARBON CO., LTD.
Inventor： Kengo Kurisu , Takuya Takahashi , Yuki Akiyama
Abstract: A carbon black is disclosed which can exert excellent abrasion resistance while suppressing heat generation when incorporated into a rubber composition. A carbon black in which the total number of active sites represented by a product of a full width at half maximum of a Raman scattering peak appearing in a range of 1340 to 1360 cm−1 when an excitation wavelength is 532 nm and a specific surface area when nitrogen gas is adsorbed is 3.60×104 to 8.20×104 (cm−1·m2/g), and when a nuclear magnetic resonance signal of a spin-spin relaxation process observed by a solid echo method is represented by a sum of a first signal and a second signal having a time constant larger than that of the first signal, an amount of hydrogen represented by a signal intensity per unit mass at time 0 of the first signal is 50.0 to 250.0 (/g).
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Patent Agency Ranking
公开(公告)号：US20170051124A1
公开(公告)日：2017-02-23
申请号：US15305887
申请日：2014-11-26
Applicant: TOKAI CARBON CO., LTD.
Inventor： Kengo Kurisu , Hiroki Uchiyama
CPC classification number: C08K3/04 , B60C1/00 , B60C1/0016 , C01P2006/12 , C08K2201/003 , C08K2201/006 , C08K2201/011 , C08L21/00 , C09C1/48 , C08L7/00
Abstract: A novel carbon black can improve rubber properties (e.g., degree of reinforcement and heat buildup). The carbon black has an aggregate void modal diameter Dmp determined by mercury porosimetry of 25 to 60 nm, and has a ratio (ΔDmp/modal diameter Dmp) of a half-width ΔDmp of an aggregate void diameter distribution determined by mercury porosimetry to the aggregate void modal diameter Dmp of 0.30 to 0.56.
Abstract translation: 新型炭黑可以改善橡胶性能（例如，增强程度和增加热量）。 炭黑具有通过25至60nm的水银孔率法测定的聚集体空隙模态直径Dmp，并且具有通过水银孔率法测定的聚集体空隙直径分布的半峰宽ΔDmp与聚集体的比率（ΔDmp/模态直径Dmp） 空隙模态直径Dmp为0.30〜0.56。
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公开(公告)号：US12065572B2
公开(公告)日：2024-08-20
申请号：US17602551
申请日：2020-03-26
Applicant: TOKAI CARBON CO., LTD.
Inventor： Kengo Kurisu , Takuya Takahashi , Yuki Akiyama
CPC classification number: C09C1/50 , C08L7/00 , B60C1/0016 , C01P2002/82 , C01P2004/53 , C01P2006/12
Abstract: A carbon black is disclosed which can exert excellent abrasion resistance while suppressing heat generation when incorporated into a rubber composition. A carbon black in which the total number of active sites represented by a product of a full width at half maximum of a Raman scattering peak appearing in a range of 1340 to 1360 cm−1 when an excitation wavelength is 532 nm and a specific surface area when nitrogen gas is adsorbed is 3.60×104 to 8.20×104 (cm−1·m2/g), and when a nuclear magnetic resonance signal of a spin-spin relaxation process observed by a solid echo method is represented by a sum of a first signal and a second signal having a time constant larger than that of the first signal, an amount of hydrogen represented by a signal intensity per unit mass at time 0 of the first signal is 50.0 to 250.0 (/g).
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公开(公告)号：US11203691B2
公开(公告)日：2021-12-21
申请号：US15999830
申请日：2016-04-07
Applicant: TOKAI CARBON CO., LTD.
Inventor： Kengo Kurisu
Abstract: It is intended to provide a carbon black which can confer reinforcing properties and low exothermicity, which are usually incompatible, as well as excellent abrasion resistance, when mixed with a rubber component, and is suitable for tire tread rubber that is used particularly under severe driving conditions.
The present invention provides a carbon black having surface free energy γd of 50 to 200 mJ/m2 determined by a reverse-phase gas chromatography analysis method and a strongly acidic group concentration of 0 to 0.115 μmol/m2.-
公开(公告)号：US20250136817A1
公开(公告)日：2025-05-01
申请号：US18702978
申请日：2023-09-07
Applicant: TOKAI CARBON CO., LTD.
Inventor： Daishi Kiriyama , Seiya Sakakibara , Kengo Kurisu , Atsushi Hieno
IPC: C09C1/56
Abstract: A method for producing modified recycled carbon black, the method including a main burner modification step of continuously supplying a main burner fuel, an oxygen-containing gas, and raw material recycled carbon black to a main burner combusting a fuel and generating a flame to perform combustion of the main burner fuel and while continuously generating a flame by the main burner, introducing the raw material recycled carbon black to the flame and passing the raw material recycled carbon black through the flame, and making a main burner total carbon combustion rate represented by Expression (1) below: Main burner total carbon combustion rate (%)=(A/(B+C))×100 (1) less than 100.0%. The present invention can provide a method for producing modified recycled carbon black that can remove rubber residuals adhering to the surface of raw material recycled carbon black effectively and continuously.
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公开(公告)号：US20250129250A1
公开(公告)日：2025-04-24
申请号：US18712492
申请日：2023-10-19
Applicant: TOKAI CARBON CO., LTD.
Inventor： Keisuke Osamura , Kengo Kurisu , Atsushi Hieno , Yuki Akiyama , Masanori Ozawa
IPC: C09C1/50
Abstract: To provide an electroconductive carbon black that can exhibit excellent electroconductivity when the electroconductive carbon black is used as a constituent component of various electroconductive materials, an electroconductive carbon black, wherein a nitrogen adsorption specific surface area (N2SA) of the electroconductive carbon black is 50 to 150 m2/g, a DBP absorption number of the electroconductive carbon black is 205 to 300 mL/100 g, and when an excitation wavelength is 532 nm, a full width at half maximum ΔD of a Raman scattering peak that appears within a range of 1340 to 1360 cm−1 is 100 to 260 cm−1, is used as an electroconductive carbon black.
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