公开(公告)号：US20230273181A1

公开(公告)日：2023-08-31

申请号：US18105942

申请日：2023-02-06

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Yuko IWASAKI ,  Yumi SAKAGUCHI ,  Hiroaki YAMADA

IPC: G01N33/44 ,  G01N30/88 ,  G01N21/31

CPC classification number: G01N33/445 ,  G01N21/314 ,  G01N30/88 ,  G01N2021/3155 ,  G01N2030/8859

Abstract: Provided is a method of quantification of free sulfur that can accurately measure the free sulfur content of a rubber composition. The present disclosure relates to a method of quantification of free sulfur in a rubber composition, the method including extracting the free sulfur in the rubber composition with toluene.

公开(公告)号：US20230186158A1

公开(公告)日：2023-06-15

申请号：US17926450

申请日：2021-03-30

Applicant: SHIMADZU CORPORATION ,  SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Shiori NAGAI ,  Tomohiro KAWASE ,  Tomoya TSUDA ,  Satoshi YAMAMOTO ,  Hiroaki YAMADA ,  Hiroyuki KISHIMOTO ,  Wakana ITO

IPC: G06N20/00

CPC classification number: G06N20/00

Abstract: For each of one or a plurality of types of samples, a database is constructed in which a sample identification tag and data belonging to at least two types of categories out of Categories (1), (2), and (3) are stored in association with each other. Data to be used as training data in supervised learning is selected from the database. At this time, one or a plurality of types of data is selected as an explanatory variable from one of the categories. Further, one or a plurality of types of data is selected as an objective variable from the other category. Then, training data is generated in which data corresponding to the selected explanatory variable is served as input and data corresponding to the selected objective variable is served as ground truth output. Category (1) is a plurality of types of samples relating to a production method of the sample, Category (2) is a plurality of types of samples acquired by analyzing a sample by one or a plurality of types of analyzers, and Category (3) is a plurality of types of physical property data that are information representing sample characteristics.

公开(公告)号：US20200024432A1

公开(公告)日：2020-01-23

申请号：US16498258

申请日：2018-04-13

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Takehiro KITAURA ,  Subaru TOYA ,  Hayato YOSHIYASU ,  Hiroaki YAMADA

IPC: C08L9/06 ,  C08K3/013 ,  C08K5/3477 ,  C08K5/01 ,  B60C1/00

Abstract: The present invention provides a rubber composition for tires which provides improved abrasion resistance, and a pneumatic tire containing the rubber composition. The present invention relates to a rubber composition for tires containing a rubber component including at least 80% by mass in total of at least one of an isoprene-based rubber, a polybutadiene rubber, or a styrene-butadiene rubber, the rubber composition containing, per 100 parts by mass of the rubber component, 3 to 250 parts by mass of a reinforcing filler and 0.2 to 10 parts by mass of a specific tetrazine compound.

公开(公告)号：US20190169404A1

公开(公告)日：2019-06-06

申请号：US16189405

申请日：2018-11-13

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hiroaki YAMADA

IPC: C08L9/00 ,  C08K5/3462 ,  C08K3/06 ,  B60C1/00

Abstract: The present invention provides a rubber composition having good abrasion resistance and a pneumatic tire formed from the rubber composition. Provided is a rubber composition containing: a compound having a group represented by the following formula (I): wherein R11 and R12 are the same or different and each represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group optionally containing a heteroatom; and a sulfur atom-containing vulcanization accelerator, the rubber composition being obtained by, before kneading a rubber component with any sulfur, kneading the rubber component and the sulfur atom-containing vulcanization accelerator, and then kneading the kneaded mixture with sulfur.

公开(公告)号：US20240255477A1

公开(公告)日：2024-08-01

申请号：US18413722

申请日：2024-01-16

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Yuko IWASAKI ,  Yoshihiko KOMORI ,  Yumi KITAURA ,  Hiroaki YAMADA

IPC: G01N30/86 ,  G01N30/02 ,  G01N33/44

CPC classification number: G01N30/8634 ,  G01N30/8682 ,  G01N33/445 ,  G01N2030/025

Abstract: A method for estimating a state of wax in a rubber compound according to a first aspect includes the following: acquiring a chromatogram of an extracted component, by separating components thereof, in which the wax is extracted from the rubber compound including the wax; and deriving a distribution of normal hydrocarbons in the wax based on the chromatogram.

公开(公告)号：US20230077190A1

公开(公告)日：2023-03-09

申请号：US17888654

申请日：2022-08-16

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Masashi FUKUCHI ,  Takehiro KITAURA ,  Hiroaki YAMADA

IPC: G01N24/08 ,  C08K9/06 ,  G01N33/44

Abstract: The present disclosure provides a chemical bond evaluation method capable of directly evaluating the presence or absence of a chemical bond between silica and a silane coupling agent. Included is a chemical bond evaluation method including evaluating the presence or absence of a chemical bond between silica and a silane coupling agent in a rubber composition containing a rubber component, the silica, and the silane coupling agent.

公开(公告)号：US20190169400A1

公开(公告)日：2019-06-06

申请号：US16182973

申请日：2018-11-07

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hiroaki YAMADA

IPC: C08K5/435 ,  B60C1/00 ,  C08K5/378 ,  C08L9/06 ,  C08L9/00 ,  C08J3/20

Abstract: The present invention provides a rubber composition having good abrasion resistance and a pneumatic tire formed from the rubber composition. Provided is a rubber composition containing: a compound having a group represented by the following formula (I): wherein R11 and R12 are the same or different and each represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group optionally containing a heteroatom; and a sulfur atom-containing vulcanization accelerator.

公开(公告)号：US20190315944A1

公开(公告)日：2019-10-17

申请号：US16338277

申请日：2017-10-11

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hiroaki YAMADA ,  Hayato YOSHIYASU

IPC: C08L9/06 ,  B60C1/00

Abstract: Provided are a rubber composition for tires that provides improved silica dispersion and fuel economy while maintaining good hardness, and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires, containing: a rubber component; silica; and at least one silica dispersing agent selected from the group consisting of compounds represented by the following formula (I) and compounds represented by the following formula (II):

公开(公告)号：US20240110898A1

公开(公告)日：2024-04-04

申请号：US18368239

申请日：2023-09-14

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD. ,  NEC Corporation

Inventor： Mio YOSHITANI ,  Yuma UNNO ,  Hiroaki YAMADA ,  Yoshio ISHIZAWA ,  Takashi KONDO ,  Junichiro KUSAKA

IPC: G01N30/86 ,  B01D53/02 ,  G01N30/72 ,  G01N33/44

CPC classification number: G01N30/8627 ,  B01D53/025 ,  G01N30/7206 ,  G01N33/445 ,  G01N2030/025

Abstract: An analyzer for a rubber composition includes an acquisition unit, a peak identification unit, and an estimation unit. The acquisition unit acquires data acquired by allowing a rubber composition to undergo component separation and mass separation, the data being plotted in a space defined by a time axis, a signal intensity axis, and a mass component axis. The peak identification unit identities peaks in signal intensity for mass chromatograms corresponding to positions on the mass component axis. The estimation unit estimates at least either of a physical property and an odor degree of the rubber composition based on the peaks identified for the mass chromatograms.

公开(公告)号：US20230204607A1

公开(公告)日：2023-06-29

申请号：US17926990

申请日：2021-03-26

Applicant: SHIMADZU CORPORATION ,  SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Tomohiro KAWASE ,  Xusheng ZHANG ,  Shiori NAGAI ,  Satoshi YAMAMOTO ,  Hiroaki YAMADA ,  Wakana ITO ,  Masashi FUKUCHI ,  Yuma UNNO

IPC: G01N35/00 ,  G01N30/72 ,  G01N30/86

CPC classification number: G01N35/00584 ,  G01N30/7206 ,  G01N30/8631 ,  G01N2035/00306 ,  G01N2035/0091 ,  G01N2035/00851 ,  G01N2030/027

Abstract: An integrated viewer for multiple measurements according to a first aspect includes: a storage unit that stores, for each of a plurality of types of analyzers, a type of a feature amount obtained from a measurement result of the analyzer; a display control unit that displays types of feature amounts stored in the storage unit on a display screen in a selectable manner; and a registration unit that names and registers a set of types of feature amounts selected by an operator among the types of the feature amounts. The display control unit displays, side by side on the display screen, a first display region in which the type of the feature amount is displayed in a tab for each type of the analyzers and a second display region in which the set of types of the feature amounts selected by the operator is displayed.