公开(公告)号：US20210062407A1

公开(公告)日：2021-03-04

申请号：US16756250

申请日：2018-10-17

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi IGARASHI ,  Tomoyuki TAKEI ,  Yu GAO ,  Masumi KURITANI

IPC: D06M11/74 ,  C01B32/05 ,  C08J5/06 ,  D06M23/10

Abstract: By sequentially performing: a step (I) of dissolving fullerene C70 in an organic solvent to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution and drying the extracted carbon fiber, a carbon fiber on which fullerene C70 adsorbs is obtained.

公开(公告)号：US20210062409A1

公开(公告)日：2021-03-04

申请号：US16757863

申请日：2018-10-17

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi IGARASHI ,  Tomoyuki TAKEI ,  Yu GAO ,  Masumi KURITANI

IPC: D06M11/74 ,  C01B32/05 ,  C08J5/06

Abstract: A carbon fiber is obtained by sequentially performing: a step (I) of dissolving a fullerene mixture including fullerenes C60 and C70 in an organic solvent to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution and drying the extracted carbon fiber.

公开(公告)号：US20210062408A1

公开(公告)日：2021-03-04

申请号：US16757861

申请日：2018-10-17

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi IGARASHI ,  Tomoyuki TAKEI ,  Yu GAO ,  Masumi KURITANI

IPC: D06M11/74

Abstract: By sequentially performing: a step (I) of dissolving fullerene C60 in a polyalkylene glycol to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution, washing the extracted carbon fiber with water, and drying the carbon fiber washed with water, a carbon fiber on which fullerene C60 adsorbs is obtained.

公开(公告)号：US20210371769A1

公开(公告)日：2021-12-02

申请号：US16758115

申请日：2018-10-24

Applicant: SHOWA DENKO K.K.

Inventor： Ryuji MONDEN ,  Yu GAO ,  Kunio KONDO ,  Masumi KURITANI

IPC: C10M177/00 ,  C10M169/04 ,  C10M125/02

Abstract: A method for producing a lubricating oil composition includes: a step of mixing a base oil and fullerene, dissolving a soluble component of the fullerene in the base oil, and obtaining a mixture of the base oil and fullerene; a step of removing an insoluble component included in the mixture and obtaining a fullerene solution; and a step of heat-treating the fullerene solution.

公开(公告)号：US20200339904A1

公开(公告)日：2020-10-29

申请号：US16758234

申请日：2018-10-24

Applicant: SHOWA DENKO K.K.

Inventor： Ryuji MONDEN ,  Yu GAO ,  Kunio KONDO ,  Masumi KURITANI

IPC: C10M125/02 ,  C10M169/04

Abstract: The lubricating oil composition includes a base oil and a fullerene adduct.

公开(公告)号：US20210371763A1

公开(公告)日：2021-12-02

申请号：US16758122

申请日：2018-10-23

Applicant: SHOWA DENKO K.K.

Inventor： Ryuji MONDEN ,  Yu GAO

IPC: C10M125/02 ,  C10M169/04

Abstract: A fullerene-containing lubricating oil composition including a base oil and fullerene, wherein the fullerene is dissolved, and the concentration is 1 ppm by mass or more and less than 50 ppm by mass.

公开(公告)号：US20210222083A1

公开(公告)日：2021-07-22

申请号：US16769085

申请日：2018-12-04

Applicant: SHOWA DENKO K.K.

Inventor： Ryuji MONDEN ,  Yu GAO ,  Masumi KURITANI ,  Kunio KONDO

IPC: C10M177/00 ,  C10M169/02 ,  C10M113/02 ,  G01N33/28 ,  G01N15/02

Abstract: A method for inspecting a lubricant oil composition containing a base oil and a fullerene, the method including: measuring at least one of a lamellar length of the lubricating oil composition and a most abundant diameter in a particle size distribution obtained by a dynamic light scattering method, and selecting the lubricating oil composition whose measured value is within a set range.