JP7507255B2 - 架橋用ゴム組成物、タイヤ用ゴム組成物、タイヤのサイドウォール用成形体、シート、タイヤのサイドウォールの製造方法、タイヤのサイドウォール - Google Patents

架橋用ゴム組成物、タイヤ用ゴム組成物、タイヤのサイドウォール用成形体、シート、タイヤのサイドウォールの製造方法、タイヤのサイドウォール Download PDF

Info

Publication number
JP7507255B2
JP7507255B2 JP2022573994A JP2022573994A JP7507255B2 JP 7507255 B2 JP7507255 B2 JP 7507255B2 JP 2022573994 A JP2022573994 A JP 2022573994A JP 2022573994 A JP2022573994 A JP 2022573994A JP 7507255 B2 JP7507255 B2 JP 7507255B2
Authority
JP
Japan
Prior art keywords
rubber
mass
polymer
parts
rubber composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2022573994A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2022149471A1 (https=
Inventor
大祐 早田
祥文 荒木
真一 元房
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Corp
Original Assignee
Asahi Kasei Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Kasei Corp filed Critical Asahi Kasei Corp
Publication of JPWO2022149471A1 publication Critical patent/JPWO2022149471A1/ja
Application granted granted Critical
Publication of JP7507255B2 publication Critical patent/JP7507255B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0025—Compositions of the sidewalls
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • C08C19/02—Hydrogenation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • C08C19/22—Incorporating nitrogen atoms into the molecule
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • C08C19/25—Incorporating silicon atoms into the molecule
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
    • C08C19/42—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups
    • C08C19/44—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
    • C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
    • C08F297/044—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes using a coupling agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/011—Crosslinking or vulcanising agents, e.g. accelerators
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/06—Sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L15/00—Compositions of rubber derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/006—Additives being defined by their surface area
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tires In General (AREA)
JP2022573994A 2021-01-07 2021-12-22 架橋用ゴム組成物、タイヤ用ゴム組成物、タイヤのサイドウォール用成形体、シート、タイヤのサイドウォールの製造方法、タイヤのサイドウォール Active JP7507255B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2021001427 2021-01-07
JP2021001427 2021-01-07
JP2021065420 2021-04-07
JP2021065420 2021-04-07
PCT/JP2021/047600 WO2022149471A1 (ja) 2021-01-07 2021-12-22 架橋用ゴム組成物、タイヤ用ゴム組成物、タイヤのサイドウォール用成形体、シート、タイヤのサイドウォールの製造方法、タイヤのサイドウォール

Publications (2)

Publication Number Publication Date
JPWO2022149471A1 JPWO2022149471A1 (https=) 2022-07-14
JP7507255B2 true JP7507255B2 (ja) 2024-06-27

Family

ID=82357270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022573994A Active JP7507255B2 (ja) 2021-01-07 2021-12-22 架橋用ゴム組成物、タイヤ用ゴム組成物、タイヤのサイドウォール用成形体、シート、タイヤのサイドウォールの製造方法、タイヤのサイドウォール

Country Status (5)

Country Link
US (1) US20240026057A1 (https=)
EP (1) EP4275914A4 (https=)
JP (1) JP7507255B2 (https=)
KR (1) KR102924193B1 (https=)
WO (1) WO2022149471A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022122538A (ja) * 2021-02-10 2022-08-23 株式会社Ｅｎｅｏｓマテリアル 重合体組成物及びゴム成型品
US20240376288A1 (en) * 2021-09-13 2024-11-14 Japan Elastomer Co., Ltd. Crosslinked Rubber Composition, and Method for Producing Crosslinked Rubber Composition
CN114669294A (zh) * 2022-04-13 2022-06-28 宏业生物科技股份有限公司 2,2-二(2-呋喃基)丙烷加氢制2,2-二(2-四氢呋喃基)丙烷的复合催化剂
JP2024014428A (ja) * 2022-07-22 2024-02-01 旭化成株式会社 更生タイヤの製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003085010A1 (en) 2002-04-10 2003-10-16 Asahi Kasei Chemicals Corporation Modified polymers and compositions containing the same
WO2011129425A1 (ja) 2010-04-16 2011-10-20 旭化成ケミカルズ株式会社 変性共役ジエン系重合体の製造方法、変性共役ジエン系重合体、及び変性共役ジエン系重合体組成物
JP2017133026A (ja) 2016-03-30 2017-08-03 日本ゼオン株式会社 ゴム組成物
WO2019151126A1 (ja) 2018-01-31 2019-08-08 Jsr株式会社 組成物、架橋成形体及びタイヤ

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07238187A (ja) * 1994-02-28 1995-09-12 Asahi Chem Ind Co Ltd タイヤトレッド用ゴム組成物
EP0775725B1 (en) 1994-08-08 2001-05-02 Asahi Kasei Kabushiki Kaisha Hydrogenated rubber composition
JP3518919B2 (ja) * 1995-03-08 2004-04-12 旭化成ケミカルズ株式会社 選択部分水添変性重合体組成物
JP4571247B2 (ja) 1998-08-07 2010-10-27 Ｊｓｒ株式会社 水添共役ジオレフィン系重合体の製造方法
ES2313965T3 (es) 2000-06-30 2009-03-16 Kraton Polymers Research B.V. Copolimeros en bloque que comprenden poliestireno y bloques duros de polidieno con un bajo contenido en vinilo.
JP2010270314A (ja) 2009-04-22 2010-12-02 Bridgestone Corp ゴム組成物及びそれを用いたタイヤ
US9771473B2 (en) 2012-02-24 2017-09-26 Kraton Polymers U.S. Llc High flow, hydrogenated styrene-butadiene-styrene block copolymers and applications
JP6004081B2 (ja) 2013-02-28 2016-10-05 Jsr株式会社 タイヤ用部材、及び、重合体組成物
JP6996074B2 (ja) 2016-06-28 2022-01-17 住友ゴム工業株式会社 ゴム組成物およびタイヤ
CN111247177A (zh) 2017-10-20 2020-06-05 株式会社普利司通 多元共聚物、橡胶组合物、交联橡胶组合物、橡胶制品和轮胎
JPWO2019142501A1 (ja) 2018-01-19 2021-02-04 株式会社ブリヂストン ゴム組成物、タイヤ、コンベヤベルト、ゴムクローラ、防振装置、免震装置及びホース
TW201936651A (zh) 2018-01-31 2019-09-16 日商Ｊｓｒ股份有限公司 組成物、交聯成形體及輪胎
WO2019171679A1 (ja) 2018-03-05 2019-09-12 株式会社ブリヂストン 共重合体、共重合体の製造方法、ゴム組成物及びタイヤ
JP7500440B2 (ja) * 2019-01-30 2024-06-17 株式会社Ｅｎｅｏｓマテリアル ゴム組成物、架橋体及びタイヤ
JP7388370B2 (ja) * 2019-02-05 2023-11-29 住友ゴム工業株式会社 ゴム組成物及びタイヤ
DE102019116627A1 (de) 2019-06-19 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Textilmaschine mit mehreren Arbeitsstellen sowie Verfahren zur Überwachung einer Textilmaschine mit mehreren Arbeitsstellen
JP7290829B2 (ja) 2019-10-23 2023-06-14 サミー株式会社 遊技機
JP7477394B2 (ja) * 2020-08-03 2024-05-01 旭化成株式会社 ゴム組成物、及びタイヤ
WO2022091982A1 (ja) * 2020-10-30 2022-05-05 旭化成株式会社 ゴム組成物、及びタイヤ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003085010A1 (en) 2002-04-10 2003-10-16 Asahi Kasei Chemicals Corporation Modified polymers and compositions containing the same
WO2011129425A1 (ja) 2010-04-16 2011-10-20 旭化成ケミカルズ株式会社 変性共役ジエン系重合体の製造方法、変性共役ジエン系重合体、及び変性共役ジエン系重合体組成物
JP2017133026A (ja) 2016-03-30 2017-08-03 日本ゼオン株式会社 ゴム組成物
WO2019151126A1 (ja) 2018-01-31 2019-08-08 Jsr株式会社 組成物、架橋成形体及びタイヤ

Also Published As

Publication number Publication date
KR102924193B1 (ko) 2026-02-06
EP4275914A1 (en) 2023-11-15
JPWO2022149471A1 (https=) 2022-07-14
WO2022149471A1 (ja) 2022-07-14
US20240026057A1 (en) 2024-01-25
EP4275914A4 (en) 2024-06-26
KR20230079269A (ko) 2023-06-05

Similar Documents

Publication Publication Date Title
JP7507255B2 (ja) 架橋用ゴム組成物、タイヤ用ゴム組成物、タイヤのサイドウォール用成形体、シート、タイヤのサイドウォールの製造方法、タイヤのサイドウォール
EP3950723B1 (en) Rubber composition, and tire
JP7592744B2 (ja) ゴム組成物、及びタイヤ
JP7757080B2 (ja) 架橋用ゴム組成物、架橋ゴムの製造方法、及びタイヤ用トレッド
EP4261234B1 (en) Hydrogenated diene polymer, bale, rubber composition, and tire
JP7526270B2 (ja) 包装成形体、架橋用ゴム組成物、包装成形体の製造方法、架橋用ゴム組成物の製造方法、及びタイヤ用トレッド
JP7570883B2 (ja) 架橋用ゴム組成物、及びタイヤ用トレッド
EP3988327B1 (en) Crosslinking rubber composition, method for producing crosslinked rubber, and tread for tire
JP7525666B2 (ja) ゴム状重合体、ゴム状重合体の製造方法、ゴム組成物、及びタイヤ用トレッド
JP7652546B2 (ja) ゴム組成物、架橋用ゴム組成物、ゴム組成物成形体の製造方法、及びタイヤ用トレッド
JP2023144632A (ja) 変性共役ジエン系重合体、それを含む靴用ゴム組成物、及びアウトソール
JP7553581B2 (ja) ベール成形体
US20210403686A1 (en) Molded Bale of Rubber Composition, Method for Producing Molded Bale, Crosslinking Rubber Composition, and Tread for Tire
JP7720717B2 (ja) ゴム組成物のベール成形体、ゴム組成物のベール成形体の製造方法、架橋用ゴム組成物、及びタイヤ用トレッド
US11912858B2 (en) Molded bale of rubber-like block copolymer, rubber composition, crosslinking rubber composition, and tread for tire
CN116761727A (zh) 交联用橡胶组合物、轮胎用橡胶组合物、轮胎胎侧用成型体、片材、轮胎胎侧的制造方法、轮胎胎侧
JP7780649B2 (ja) 共役ジエン重合体、ゴム組成物、及びタイヤ用部材
JP2025117902A (ja) 変性共役ジエン系重合体、靴用ゴム組成物、及びアウトソール
JP2025117871A (ja) 変性共役ジエン系重合体、靴用ゴム組成物、及びアウトソール
JP2022008066A (ja) ゴム組成物のベール成形体、ベール成形体の製造方法、架橋用ゴム組成物、及びタイヤ用トレッド
JP2023142465A (ja) ゴム組成物、ゴム組成物の製造方法、及びタイヤ
WO2025205189A1 (ja) ゴム組成物、及び、加硫ゴム組成物

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230602

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20240312

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240501

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240521

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240617