WO2023037615A1 - Composition de caoutchouc pour pneumatique - Google Patents

Composition de caoutchouc pour pneumatique Download PDF

Info

Publication number
WO2023037615A1
WO2023037615A1 PCT/JP2022/011625 JP2022011625W WO2023037615A1 WO 2023037615 A1 WO2023037615 A1 WO 2023037615A1 JP 2022011625 W JP2022011625 W JP 2022011625W WO 2023037615 A1 WO2023037615 A1 WO 2023037615A1
Authority
WO
WIPO (PCT)
Prior art keywords
mass
rubber
rubber composition
resin
carbon atoms
Prior art date
Application number
PCT/JP2022/011625
Other languages
English (en)
Japanese (ja)
Inventor
玲 川口
隆太郎 中川
Original Assignee
横浜ゴム株式会社
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 横浜ゴム株式会社 filed Critical 横浜ゴム株式会社
Publication of WO2023037615A1 publication Critical patent/WO2023037615A1/fr

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
    • 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
    • C08K3/013—Fillers, pigments or reinforcing additives
    • 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
    • C08K5/54—Silicon-containing compounds
    • 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
    • C08K5/54—Silicon-containing compounds
    • C08K5/541—Silicon-containing compounds containing oxygen
    • C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular 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
    • 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
    • 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 

Definitions

  • the present invention relates to a rubber composition for tires intended mainly for use in the tread portion of tires for high-performance automobiles.
  • Patent Literature 1 proposes blending a resin into a rubber composition in order to achieve both dry performance and wet performance.
  • the amount of resin compounded is increased in order to improve dry performance and wet performance, there is a risk that sufficient wear resistance will not necessarily be obtained. Therefore, in order to improve dry performance and wet performance by blending a resin into a rubber composition, there is a demand for a countermeasure that maintains or improves wear resistance in a favorable manner and achieves both of these performances in a well-balanced manner.
  • An object of the present invention is to provide a rubber composition for a tire that improves dry performance and wet performance, maintains or improves abrasion resistance well, and makes it possible to achieve both of these performances in a well-balanced manner. That's what it is.
  • the rubber composition for tires of the present invention for achieving the above object is obtained by blending a filler and a resin with a diene rubber containing 40% by mass or more of a specific modified conjugated diene polymer represented by the following formula (1).
  • R 1 is a hydrocarbyl group having 1 to 20 carbon atoms
  • R 3 is a hydrocarbyloxy group having 1 to 20 carbon atoms, or a modified or unmodified conjugated diene polymer chain
  • R 2 is an alkanediyl group having 1 to 20 carbon atoms
  • Z is a group represented by the following formula (2) or (3).
  • R 4 has an m-valent hydrocarbyl group having 1 to 20 carbon atoms, or at least one atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, and has active hydrogen. is an m-valent group having 1 to 20 carbon atoms.
  • n is an integer of 1-3 and m is an integer of 2-10.
  • R 5 is a hydrogen atom or a hydrocarbyl group
  • Poly is a modified or unmodified conjugated diene polymer chain.
  • "*" indicates a bond that binds to R4 .
  • the rubber composition for a tire of the present invention uses a sufficient amount of the specific modified conjugated diene-based polymer represented by the above formula (1) as a rubber component, uses it in combination with a resin in the above ratio, and Since a sufficient amount of filler is blended as in, dry performance and wet performance are improved, and wear resistance is well maintained or improved, and these performances can be achieved in a well-balanced manner at a high level.
  • the rubber composition for tires of the present invention preferably contains 1% by mass to 40% by mass of natural rubber and/or polybutadiene rubber in 100% by mass of diene rubber. This is advantageous for improving wear resistance.
  • the filler preferably contains at least silica, and the amount of silica compounded is preferably 75 parts by mass or more per 100 parts by mass of the diene rubber. At this time, it is preferable to blend less than 10% by mass of the silane coupling agent with respect to the amount of silica blended. This is advantageous for achieving a high balance between dry performance, wet performance, and wear resistance.
  • the softening point of the resin is preferably 100°C or higher. Such a high softening point of the resin is advantageous for improving dry performance and wet performance.
  • the rubber composition for tires of the present invention is intended to be used in the tread portion of various tires (for example, summer tires and high performance tires). These various tires are preferably pneumatic tires, but may be non-pneumatic tires.
  • the tire to which the rubber composition for tires of the present invention is applied is a pneumatic tire, the interior thereof is filled with air, an inert gas such as nitrogen, or other gas.
  • the rubber component is a diene-based rubber and necessarily contains a specific modified conjugated diene-based polymer represented by the following formula (1).
  • a specific modified conjugated diene-based polymer represented by the following formula (1).
  • natural rubber and/or polybutadiene rubber can also be used in combination.
  • R 1 is a hydrocarbyl group having 1-20 carbon atoms, preferably 2-18 carbon atoms.
  • R 3 is a hydrocarbyloxy group having 1 to 20 carbon atoms, preferably 2 to 18 carbon atoms, or a conjugated diene polymer chain. The conjugated diene-based polymer chain may be modified or unmodified.
  • R 2 is an alkanediyl group having 1 to 20 carbon atoms, preferably 2 to 18 carbon atoms.
  • Z is a group represented by the following formula (2) or formula (3).
  • R 4 is an m-valent hydrocarbyl group having 1 to 20 carbon atoms, preferably 2 to 18 carbon atoms, or has at least one atom selected from the group consisting of nitrogen, oxygen and sulfur atoms. It is an m-valent group having 1 to 20, preferably 2 to 18 carbon atoms and having no active hydrogen.
  • n and m are integers, n is 1-3, preferably 1-2, and m is 2-10, preferably 3-8.
  • a plurality of R 1 , R 2 , R 3 and Z may be the same or different.
  • R5 is a hydrogen atom or a hydrocarbyl group.
  • Poly is a modified or unmodified conjugated diene polymer chain.
  • "*" indicates a bond that binds to R4 .
  • the specific modified conjugated diene-based polymer described above can be produced, for example, using a compound represented by the following formula (4).
  • R 1 and R 2 are each independently a hydrocarbyl group having 1 to 20 carbon atoms.
  • R 1 preferably has 2 to 18 carbon atoms, and R 2 preferably has 2 to 18 carbon atoms.
  • R 3 is an alkanediyl group having 1 to 20 carbon atoms, preferably 2 to 18 carbon atoms.
  • R 4 is an m-valent hydrocarbyl group having 1 to 20 carbon atoms, preferably 2 to 18 carbon atoms, or has at least one atom selected from the group consisting of nitrogen, oxygen and sulfur atoms. It is an m-valent group having 1 to 20, preferably 2 to 18 carbon atoms and having no active hydrogen.
  • R 5 is a hydrogen atom or a hydrocarbyl group and "*" is indicating that it is a bond that binds to R 4 ).
  • n and m are integers, n is 1-3, preferably 1-2, and m is 2-10, preferably 3-8.
  • a plurality of R 1 , R 2 , R 3 and A 2 may be the same or different.
  • the content of the specific modified conjugated diene polymer represented by the above formula (1) is 40% by mass or more, preferably 50% to 75% by mass, based on 100% by mass of the diene rubber as a whole.
  • a specific amount of the specific modified conjugated diene-based polymer in this manner, dry performance and wet performance can be improved, and wear resistance can be maintained or improved in a favorable manner in cooperation with the resin described later. can be done. If the content of the specific modified conjugated diene-based polymer is less than 40% by mass, the wear resistance deteriorates.
  • the specific modified conjugated diene-based polymer used in the present invention has a weight average molecular weight of 900,000 or more, preferably 1,000,000 to 1,400,000, in addition to being represented by the above formula (1). If the weight-average molecular weight is less than 900,000, the abrasion resistance will deteriorate.
  • a weight average molecular weight is a value of polystyrene conversion measured by a gel permeation chromatography (GPC).
  • the specific modified conjugated diene polymer used in the present invention preferably has a glass transition temperature Tg of -40°C to -30°C, more preferably -38°C to -32°C. If the glass transition temperature Tg is less than ⁇ 40° C., the wet performance and dry performance deteriorate. If the glass transition temperature Tg exceeds ⁇ 30° C., the abrasion resistance is lowered.
  • the specific modified conjugated diene polymer used in the present invention preferably has a styrene content of 38.5% to 41.5%, more preferably 39.0% to 41.0%. If the styrene content is 38.5%, the wet performance and dry performance are lowered. If the styrene content exceeds 41.5%, the abrasion resistance is lowered.
  • the specific modified conjugated diene polymer used in the present invention preferably has a vinyl content of 23.5% to 27.5%, more preferably 24.0% to 27.0%.
  • the vinyl content is 23.5%, the wet performance and dry performance deteriorate. If the vinyl content exceeds 27.5%, the abrasion resistance decreases.
  • the rubber component may contain natural rubber and/or polybutadiene rubber in addition to the specific modified conjugated diene polymer described above.
  • the natural rubber and polybutadiene rubber those generally used in rubber compositions for tires can be used.
  • the content thereof is preferably 1% by mass to 25% by mass, more preferably 5% by mass to 20% by mass in 100% by mass of diene rubber. good.
  • the content is preferably 2% by mass to 40% by mass, more preferably 5% by mass, based on 100% by mass of diene rubber.
  • the rubber composition for tires of the present invention may contain diene rubbers other than the specific modified conjugated diene polymer, natural rubber, and polybutadiene rubber as long as they do not impair the purpose of the present invention.
  • diene rubbers include, for example, styrene-butadiene rubber and acrylonitrile-butadiene rubber. These diene rubbers can be used alone or as any blend.
  • a filler is always blended with the diene rubber described above.
  • the amount of the filler compounded is 75 parts by mass or more, preferably 100 to 180 parts by mass, per 100 parts by mass of the diene rubber. Blending a sufficient amount of filler in this manner is advantageous for improving dry performance. If the amount of filler compounded is less than 75 parts by mass, wet performance, dry performance, and abrasion resistance are lowered.
  • silica As the filler, it is preferable to use silica as the filler.
  • the content of silica should be 60% by mass or more, preferably 60% to 80% by mass, based on the total amount of the filler. Blending a sufficient amount of silica in this manner is advantageous for improving wet performance. If the silica content is less than 60% by mass, the wet performance will deteriorate.
  • Silica that is commonly used in rubber compositions for tires can be used as silica.
  • Silica can be appropriately selected and used from commercially available ones. Silica obtained by a normal production method can also be used.
  • the CTAB adsorption specific surface area of silica is preferably 185 m 2 /g to 215 m 2 /g, more preferably 190 m 2 /g to 210 m 2 /g.
  • Wet performance can be improved by using silica having such a particle size.
  • the rubber composition of the present invention can contain fillers other than silica.
  • fillers include materials commonly used in rubber compositions for tires, such as carbon black, clay, talc, calcium carbonate, mica, and aluminum hydroxide.
  • carbon black it is preferable to use carbon black together. Dry performance can be improved by using carbon black together.
  • the amount thereof is not particularly limited, but it can be set to, for example, 5 parts by mass to 70 parts by mass with respect to 100 parts by mass of the diene rubber.
  • silane coupling agent in combination with the silica described above.
  • the type of silane coupling agent is not particularly limited as long as it can be used in silica-blended rubber compositions. ethoxysilylpropyl) disulfide, 3-trimethoxysilylpropylbenzothiazole tetrasulfide, ⁇ -mercaptopropyltriethoxysilane, 3-octanoylthiopropyltriethoxysilane, and other sulfur-containing silane coupling agents.
  • the amount of the silane coupling agent compounded is preferably less than 10% by mass, more preferably 6% to 9% by mass, relative to the amount of silica compounded. If the compounded amount of the silane coupling agent is 10% by mass or more of the silica compounded amount, the silane coupling agents will condense with each other, and the desired hardness and strength cannot be obtained in the rubber composition.
  • the rubber composition for tires of the present invention must contain a resin from the viewpoint of improving dry performance and wet performance.
  • a resin from the viewpoint of improving dry performance and wet performance.
  • the wear resistance may be affected, so in the present invention, the above-mentioned specific modified conjugated diene polymer is always used as the rubber component. That is, the present inventors have found that when a specific modified conjugated diene-based polymer and a resin are used in combination, dry performance and wet performance can be improved without deteriorating abrasion resistance, and the present invention is based on this finding. has determined the compounding of the rubber composition for tires. For this reason, in the rubber composition for tires of the present invention, the amount of the resin compounded is defined as the ratio to the specific modified conjugated diene polymer.
  • the mass ratio of the resin to the specific modified conjugated diene polymer is set to 1/10 to 1/2, preferably 1/5 to 2/5.
  • the mass ratio of the resin to the specific modified conjugated diene-based polymer is less than 1/10, wet performance and dry performance deteriorate. If the mass ratio of the resin to the specific modified conjugated diene-based polymer exceeds 1/2, the wear resistance is lowered.
  • Examples of resins used in the present invention include petroleum-based resins and aromatic resins.
  • Examples of petroleum-based resins include C5 - based petroleum resins (aliphatic petroleum resins obtained by polymerizing fractions such as isoprene, 1,3-pentadiene, cyclopentadiene, methylbutene, and pentene), C9 - based petroleum resins ( ⁇ -methylstyrene , o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, etc.), C 5 C 9 copolymer petroleum resin, and the like.
  • aromatic resins examples include coumarone resins, phenol resins, alkylphenol resins, terpene resins, aromatic modified terpene resins, rosin resins, novolac resins, resole resins, and aromatic indene copolymers. . Among them, aromatic modified terpene resins and aromatic indene copolymers are preferred. These resins can be used singly or as a blend of multiples.
  • the C9 petroleum resins mentioned above are also classified as aromatic resins.
  • resins having a softening point of 100°C or higher those having a softening point of 100°C or higher, preferably 105°C to 130°C can be suitably used.
  • resins having a softening point of 100 ° C. or higher are selected appropriately from, for example, YS resin TO series manufactured by Yasuhara Chemical Co., Ltd., Nisseki Neopolymer series manufactured by JX, FMR series manufactured by Mitsui Chemicals, etc. can do.
  • the drying performance can be improved by sufficiently high softening point of the resin. If the softening point of the resin is less than 100°C, the drying performance will be deteriorated.
  • the rubber composition of the present invention may contain compounding agents other than those mentioned above.
  • Other compounding agents include vulcanizing or cross-linking agents, vulcanization accelerators, anti-aging agents, liquid polymers, thermosetting resins, thermoplastic resins, and various compounding agents generally used in rubber compositions for tires. can be exemplified.
  • the blending amount of these compounding agents can be a conventional general blending amount as long as it does not contradict the object of the present invention.
  • a kneader a general rubber kneader such as a Banbury mixer, a kneader, or a roll can be used.
  • vulcanization was performed at 145°C for 35 minutes using a mold of a predetermined shape to prepare a vulcanized rubber test piece of each tire rubber composition.
  • the tan ⁇ at 0° C. of each tire rubber composition was determined according to JIS K6253 using a viscoelastic spectrometer (manufactured by Toyo Seiki Seisakusho Co., Ltd.) with an initial strain of 10. %, amplitude ⁇ 2%, frequency 20 Hz, temperature 0°C.
  • the evaluation results are shown as indices with the value of Standard Example 1 being 100. A larger index value means better wet performance (wet grip performance).
  • Dry Performance Using the obtained tire rubber composition, vulcanization was performed at 145° C. for 35 minutes using a mold of a predetermined shape to prepare a vulcanized rubber test piece of each tire rubber composition. Using the obtained vulcanized rubber test piece, the loss elastic modulus E2 and the complex elastic modulus E * of each tire rubber composition were measured, and the ratio E2/(E * ) 2 was calculated. It was used as an index of performance (dry braking performance).
  • the loss elastic modulus E2 and the complex elastic modulus E * were measured by a viscoelastic spectrometer (manufactured by Toyo Seiki Seisakusho Co., Ltd.) according to JIS K6394, with initial strain of 10%, amplitude of ⁇ 2%, frequency of 20 Hz, and temperature of 60 °C.
  • the evaluation results are shown as indices with the value of Standard Example 1 being 100. A larger index value means better dry performance (dry braking performance).
  • Abrasion resistance The above-mentioned 14 types of tire rubber compositions (Standard Example 1, Comparative Examples 1 to 7, Examples 1 to 6) are used for the tread rubber, and the tire size is 255/35ZR19 (96Y).
  • a padded tire (test tire) was produced. At this time, each portion other than the tread rubber was common to all test tires.
  • These test tires were mounted on a wheel with a rim size of 19 ⁇ 8.5J, and mounted on a test vehicle at an air pressure of 230 kPa. After driving 8000 km on a dry road surface, the groove depth was measured to evaluate wear resistance. The evaluation results are shown as indices with the value of Standard Example 1 being 100. The larger the index, the larger the remaining groove depth and the better the wear resistance.
  • ⁇ SBR1 Modified styrene-butadiene rubber corresponding to the specific modified conjugated diene-based polymer represented by the above formula (1), HPR620 manufactured by JSR Corporation (weight average molecular weight: 1,270,000)
  • SBR2 Modified styrene-butadiene rubber, Toughden 581 manufactured by Asahi Kasei Corporation (weight average molecular weight: 1,300,000)
  • SBR3 unmodified styrene-butadiene rubber
  • SBR4 modified styrene-butadiene rubber
  • NS616 manufactured by Nippon Zeon (weight average molecular weight: 300,000)
  • ⁇ NR natural rubber
  • SIR-20 ⁇ BR Butadiene rubber
  • NIPOL BR 1220 manufactured by Nippon Zeon weight average molecular weight: 300,000
  • ⁇ CB Carbon black, Seast 7HM manufactured by Tokai Carbon Co., Ltd.
  • Silica ZEOSIL 1165MP manufactured by Solvay ⁇ Silane coupling agent: NXT SILANE manufactured by Momentive ⁇ Resin 1: C5C9 copolymerized petroleum resin, Nisseki Neopolymer 170S manufactured by JX Corporation (softening point: 154°C)
  • Resin 2 Aromatic modified terpene resin, YS resin TO-125 manufactured by Yasuhara Chemical Co., Ltd. (softening point: 125 ° C.)
  • Resin 3 Indene resin, FMR0150 manufactured by Mitsui Chemicals, Inc.
  • Anti-aging agent VULKANOX 4020 manufactured by LANXESS ⁇ Wax: OZOACE-0015A manufactured by NIPPON SEIRO ⁇ Zinc white: Zinc Oxide manufactured by ZM Silesia ⁇ Stearic acid: PALMAC 1600 manufactured by IOI Acidchem ⁇ Vulcanization accelerator: Noxceller TOT-N manufactured by Ouchi Shinko Kagaku Co., Ltd. ⁇ Sulfur: Sulfax 5 manufactured by Tsurumi Chemical Industry Co., Ltd.
  • Examples 1 to 6 improved wet performance, dry performance, and wear resistance compared to Standard Example 1, and achieved a good balance between these performances.
  • Comparative Examples 1 to 3 did not contain the specific modified conjugated diene polymer (SBR1), so wet performance, dry performance, or wear resistance deteriorated, and these performances could not be achieved at the same time. .
  • Comparative Example 4 since the content of the specific modified conjugated diene polymer (SBR1) was small, the abrasion resistance was lowered.
  • Comparative Example 5 the abrasion resistance decreased because the amount of the resin compounded relative to the specific modified conjugated diene polymer (SBR1) was excessive.
  • Comparative Example 6 wet performance and dry performance deteriorated because the blending amount of the resin relative to the specific modified conjugated diene polymer (SBR1) was small.
  • Comparative Example 7 the wet performance, dry performance, and abrasion resistance were lowered because the amount of the filler compounded was small.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tires In General (AREA)

Abstract

L'invention concerne une composition de caoutchouc pour pneumatiques avec laquelle il est possible d'améliorer les performances sèches et humides et de maintenir ou d'améliorer de manière satisfaisante la résistance à l'usure afin d'atteindre un degré élevé d'équilibre entre ces performances. Une ou plusieurs charges et une résine sont incorporées dans un caoutchouc à base de diène comprenant 40 % en masse ou plus de polymère à base de diène conjugué modifié spécifique représenté par la formule (1), de sorte que la quantité totale des charges soit de 75 parties en masse ou plus pour 100 parties en masse du caoutchouc à base de diène et que le rapport en masse de la résine au polymère à base de diène conjugué modifié spécifique soit de 1/10 à 1/2.
PCT/JP2022/011625 2021-09-07 2022-03-15 Composition de caoutchouc pour pneumatique WO2023037615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-145513 2021-09-07
JP2021145513A JP7188519B1 (ja) 2021-09-07 2021-09-07 タイヤ用ゴム組成物

Publications (1)

Publication Number Publication Date
WO2023037615A1 true WO2023037615A1 (fr) 2023-03-16

Family

ID=84441437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/011625 WO2023037615A1 (fr) 2021-09-07 2022-03-15 Composition de caoutchouc pour pneumatique

Country Status (2)

Country Link
JP (1) JP7188519B1 (fr)
WO (1) WO2023037615A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014189698A (ja) * 2013-03-28 2014-10-06 Yokohama Rubber Co Ltd:The タイヤトレッド用ゴム組成物
WO2017221943A1 (fr) * 2016-06-24 2017-12-28 Jsr株式会社 Procédé de production d'un polymère diène conjugué modifié, polymère diène conjugué modifié, composition polymère, corps réticulé, pneumatique et composé
JP2019094390A (ja) * 2017-11-20 2019-06-20 Jsr株式会社 変性共役ジエン系重合体の製造方法、重合体組成物、架橋体及びタイヤ
WO2020196899A1 (fr) * 2019-03-27 2020-10-01 Jsr株式会社 Polymère diénique conjugué hydrogéné, composition polymère, corps réticulé, et pneu
WO2021085616A1 (fr) * 2019-10-31 2021-05-06 Jsr株式会社 Procédé de production d'un polymère à base de diène conjugué modifié, composition de polymère, objet réticulé et pneu

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220259420A1 (en) 2019-06-18 2022-08-18 Eneos Materials Corporation Polymer composition, crosslinked polymer, and tire
TW202110903A (zh) 2019-07-26 2021-03-16 日商Jsr 股份有限公司 聚合物組成物、交聯聚合物及輪胎
JP2021120448A (ja) 2019-12-12 2021-08-19 旭化成株式会社 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、ゴム組成物、ゴム組成物の製造方法、及びタイヤの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014189698A (ja) * 2013-03-28 2014-10-06 Yokohama Rubber Co Ltd:The タイヤトレッド用ゴム組成物
WO2017221943A1 (fr) * 2016-06-24 2017-12-28 Jsr株式会社 Procédé de production d'un polymère diène conjugué modifié, polymère diène conjugué modifié, composition polymère, corps réticulé, pneumatique et composé
JP2019094390A (ja) * 2017-11-20 2019-06-20 Jsr株式会社 変性共役ジエン系重合体の製造方法、重合体組成物、架橋体及びタイヤ
WO2020196899A1 (fr) * 2019-03-27 2020-10-01 Jsr株式会社 Polymère diénique conjugué hydrogéné, composition polymère, corps réticulé, et pneu
WO2021085616A1 (fr) * 2019-10-31 2021-05-06 Jsr株式会社 Procédé de production d'un polymère à base de diène conjugué modifié, composition de polymère, objet réticulé et pneu

Also Published As

Publication number Publication date
JP2023038668A (ja) 2023-03-17
JP7188519B1 (ja) 2022-12-13

Similar Documents

Publication Publication Date Title
JP6018207B2 (ja) トレッド用ゴム組成物及び空気入りタイヤ
JP6173078B2 (ja) タイヤ用ゴム組成物及び空気入りタイヤ
EP1690895B1 (fr) Composition de caoutchouc et pneumatique comprenant bande de roulement comprenant celle-ci
JP6055118B2 (ja) 空気入りタイヤ
JP7288861B2 (ja) ゴム組成物及びタイヤ
JP2017141429A (ja) 低温性能及びウェットトラクションのためのトレッドを有するタイヤ
JP4088258B2 (ja) ゴム組成物およびそれを用いたタイヤ
JP7119330B2 (ja) タイヤ用ゴム組成物
WO2005087858A1 (fr) Mélange caoutchouté et bandage pneumatique utilisant le même
JP2013036025A (ja) タイヤ用ゴム組成物
JP7119329B2 (ja) タイヤ用ゴム組成物
WO2013157545A1 (fr) Composition de caoutchouc pour pneu et pneumatique
US20090171029A1 (en) Styrene-based polymer, styrene-based copolymer, rubber composition and pneumatic tire
US20230383101A1 (en) Rubber composition and pneumatic tire
US20190144644A1 (en) Rubber composition for tires, and pneumatic tire using the same
JP7000318B2 (ja) ゴム組成物、及びタイヤ
US20190031864A1 (en) Tire
JP2019137281A (ja) タイヤ用ゴム組成物
JP7188519B1 (ja) タイヤ用ゴム組成物
JP4124758B2 (ja) ゴム組成物およびそれを用いたタイヤ
JP2019077832A (ja) スタッドレスタイヤ用ゴム組成物
JP7293892B2 (ja) ゴム組成物
JP7119396B2 (ja) タイヤ用ゴム組成物
JP2020117664A (ja) タイヤ用ゴム組成物
JP7188521B1 (ja) タイヤ用ゴム組成物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22866949

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE