WO2023079914A1 - Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ - Google Patents

Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ Download PDF

Info

Publication number
WO2023079914A1
WO2023079914A1 PCT/JP2022/037919 JP2022037919W WO2023079914A1 WO 2023079914 A1 WO2023079914 A1 WO 2023079914A1 JP 2022037919 W JP2022037919 W JP 2022037919W WO 2023079914 A1 WO2023079914 A1 WO 2023079914A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber composition
rubber
mass
tire
parts
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.)
Ceased
Application number
PCT/JP2022/037919
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
良彦 鈴木
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.)
Bridgestone Corp
Original Assignee
Bridgestone 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 Bridgestone Corp filed Critical Bridgestone Corp
Priority to EP22889737.7A priority Critical patent/EP4427949A4/en
Priority to CN202280072785.6A priority patent/CN118176121A/zh
Priority to US18/694,990 priority patent/US20240417584A1/en
Priority to JP2023557917A priority patent/JPWO2023079914A1/ja
Publication of WO2023079914A1 publication Critical patent/WO2023079914A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D107/00—Coating compositions based on natural rubber
    • 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
    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • 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
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular

Definitions

  • the present invention relates to a coating rubber composition for RFID tags and a tire.
  • Patent Document 1 The RFID tag is usually covered with a coating rubber in order to be placed in a tire consisting mainly of rubber material.
  • the coating rubber for the RFID tag has various required properties such as crack resistance, adhesiveness with adjacent rubber members, and appropriate elastic modulus.
  • the main structure of the coating rubber composition for RFID tags and the tire of the present invention that solves the above problems is as follows.
  • a coating rubber composition for RFID tags characterized by containing a rubber component, an oil, and a tackifier.
  • the tackifier is at least one selected from the group consisting of rosin-based resins, terpene-based resins, petroleum-based resins, phenol-based resins, coal-based resins, and xylene-based resins [1]-[ 4].
  • the coating rubber composition for RFID tags according to any one of 4].
  • a tire comprising an RFID tag coated with the RFID tag coating rubber composition according to any one of [1] to [5].
  • operativity at the time of tire molding can be provided. Moreover, according to the present invention, it is possible to provide a tire with excellent productivity.
  • FIG. 1 is a cross-sectional view of one embodiment of the tire of the present invention.
  • the RFID tag coating rubber composition and tire of the present invention will be illustrated and explained in detail below based on the embodiments thereof.
  • the RFID tag coating rubber composition of the present invention is characterized by containing a rubber component, an oil, and a tackifier.
  • the coating rubber composition for RFID tags of the present invention contains oil, and the oil improves the cohesiveness of the rubber composition during kneading, resulting in good workability during kneading.
  • the RFID tag coating rubber composition of the present invention contains a tackifier, and the tackifier improves the adhesiveness (tack) of the rubber composition, so in molding a tire (raw tire), the The RFID tag (that is, the RFID tag-rubber composite) coated with the coating rubber composition for RFID tags does not easily fall off, and the workability during tire molding is good. Therefore, the RFID tag coating rubber composition of the present invention is excellent in workability during kneading and tire molding.
  • the RFID tag coating rubber composition of the present invention contains a rubber component, which provides rubber elasticity to the composition.
  • the rubber component is preferably a diene rubber, and may be natural rubber (NR), synthetic diene rubber, or both.
  • Examples of the synthetic diene rubber include isoprene rubber (IR), styrene-butadiene rubber (SBR), butadiene rubber (BR), styrene-isoprene rubber (SIR), chloroprene rubber (CR), and the like.
  • the rubber component may be used alone or in a blend of two or more.
  • the RFID tag coating rubber composition of the present invention contains oil.
  • the rubber composition contains oil, the rubber composition is well-cohered during kneading, and the workability during kneading of the rubber composition is improved.
  • the oil is a general term for extender oil contained in the rubber component and liquid oil added as a compounding agent of the rubber composition, and petroleum softeners such as aromatic oil, paraffin oil, and naphthenic oil; Vegetable softeners such as palm oil, castor oil, cottonseed oil and soybean oil can be mentioned. Among these, petroleum-based softeners such as aromatic oils, paraffinic oils, and naphthenic oils are preferred.
  • a naphthenic oil containing asphalt is preferable.
  • the rubber composition contains an asphalt-containing naphthenic oil, the rubber composition is more cohesive during kneading, and workability during kneading of the rubber composition is further improved.
  • the naphthenic oil containing asphalt a mixture of naphthenic base oil and asphalt in a mass ratio range of (95/5) to (30/70) is preferable. If the mass ratio is within this range, the compatibility between the rubber component and the oil is further improved.
  • a hydrogenated naphthenic base oil is preferable, and a hydrogenated naphthenic base oil obtained by highly hydrorefining an aromatic oil or naphthenic oil using a high-pressure/high-temperature hydrorefining production apparatus is particularly preferred.
  • Such hydrogenated naphthenic base oils are specifically available as commercial products such as SNH8, SNH46, SNH220 and SNH440 (all trademarks) manufactured by Sankyo Yuka Kogyo Co., Ltd.
  • the asphalt mixed with the naphthenic base oil the asphaltene component is 5% by mass or less in consideration of the compatibility with the rubber component used and the effect of improving the coherence in kneading of the rubber composition. is preferred.
  • the asphaltene component is quantified by composition analysis measured in accordance with the JPI method [Japan Petroleum Institute standard JPI-5S-22-83 (established in 1983) standard name "composition analysis method by column chromatography of asphalt”].
  • Such asphalt is preferably straight asphalt, and more preferably naphthenic straight asphalt. Further, the asphalt preferably has a kinematic viscosity of 300 mm 2 /sec or less at 120°C.
  • the method of mixing the asphalt is not particularly limited, but from the viewpoint of ease of preparation and economy, a method of dissolving asphalt in naphthenic base oil (including extender oil and blended oil) is preferable. .
  • a hydrogenated naphthenic base oil produced by a high-pressure/high-temperature hydrorefining unit and a naphthenic straight asphalt containing 5% by mass or less of asphaltene are mixed at a mass ratio (63/37).
  • the product name "A/O Mix” manufactured by Sankyo Yuka Kogyo Co., Ltd. obtained by the above method is preferable.
  • the content of the oil is preferably 2 parts by mass or more, more preferably 4 parts by mass or more, and preferably 20 parts by mass or less, based on 100 parts by mass of the rubber component. It is more preferably not more than parts by mass.
  • the oil content is 2 parts by mass or more with respect to 100 parts by mass of the rubber component, the effect of improving the cohesiveness of the rubber composition during kneading is increased, and the workability during kneading is further improved.
  • the oil content is less than 2 parts by mass with respect to 100 parts by mass of the rubber component, tack tends to be insufficient in terms of workability during tire molding.
  • the content of the oil is 2 to 20 parts by mass with respect to 100 parts by mass of the rubber component
  • the effect of improving the coherence of the rubber composition during kneading is increased, and the workability during kneading is further improved. do.
  • the oil content is 2 to 15 parts by mass with respect to 100 parts by mass of the rubber component
  • the effect of improving the coherence in kneading of the rubber composition is further increased, and the workability during kneading is further improved. further improve.
  • the RFID tag coating rubber composition of the present invention contains a tackifier.
  • the rubber composition contains a tackifier, the adhesiveness of the rubber composition is improved, and the workability of the rubber composition during tire molding is improved.
  • tackifier various natural resins and synthetic resins can be used. Specifically, rosin-based resins, terpene-based resins, petroleum-based resins, phenol-based resins, coal-based resins, and xylene-based resins can be used. It is preferred to use These tackifiers may be used singly or in combination of two or more.
  • the rubber composition contains at least one selected from the group consisting of rosin-based resins, terpene-based resins, petroleum-based resins, phenol-based resins, coal-based resins, and xylene-based resins, the adhesiveness of the rubber composition is further improved. This further improves the workability of the rubber composition during tire molding.
  • rosin-based resins include gum rosin, tall oil rosin, wood rosin, hydrogenated rosin, disproportionated rosin, polymerized rosin, glycerin of modified rosin, pentaerythritol ester, and the like.
  • examples of terpene resins include ⁇ -pinene, ⁇ -pinene, and dipentene terpene resins, aromatic modified terpene resins, terpene phenol resins, and hydrogenated terpene resins.
  • polymerized rosins, terpene phenolic resins, and hydrogenated terpene resins are preferred from the standpoint of the fracture resistance of the rubber composition blended therein.
  • the petroleum-based resin is, for example, a cracked oil fraction containing unsaturated hydrocarbons such as olefins and diolefins, which are by-produced together with petrochemical basic raw materials such as ethylene and propylene by thermal decomposition of naphtha in the petrochemical industry. obtained by polymerizing the mixture as it is with a Friedel-Crafts type catalyst.
  • Examples of the petroleum-based resins include aliphatic petroleum resins obtained by (co)polymerizing C5 fractions obtained by thermal decomposition of naphtha (hereinafter sometimes referred to as " C5 -based resins”), naphtha Aromatic petroleum resin obtained by (co)polymerizing the C9 fraction obtained by thermal decomposition of (hereinafter sometimes referred to as " C9 resin”), the C5 fraction and the C9 fraction Copolymerized petroleum resins obtained by copolymerizing fractions (hereinafter sometimes referred to as "C 5 -C 9 resins”), alicyclic compound petroleum resins such as hydrogenated and dicyclopentadiene , styrene, substituted styrene, or copolymers of styrene and other monomers.
  • C5 -based resins naphtha Aromatic petroleum resin obtained by (co)polymerizing the C9 fraction obtained by thermal decomposition of (hereinafter sometimes referred to as " C9 resin")
  • the C5 fraction obtained by pyrolysis of naphtha usually contains olefinic Hydrocarbons, diolefinic hydrocarbons such as 2-methyl-1,3-butadiene, 1,2-pentadiene, 1,3-pentadiene and 3-methyl-1,2-butadiene are included.
  • the aromatic petroleum resin obtained by (co)polymerizing the C9 fraction is a resin obtained by polymerizing an aromatic having a carbon number of 9 with vinyltoluene and indene as the main monomers, and is produced by thermal decomposition of naphtha.
  • C9 fraction obtained examples include styrene homologues such as ⁇ -methylstyrene, ⁇ -methylstyrene and ⁇ -methylstyrene, and indene homologues such as indene and coumarone.
  • Trade names include Petrogin made by Mitsui Petrochemicals, Petolite made by Mikuni Chemicals, Neopolymer made by Nippon Petrochemicals, and Petcol made by Toyo Soda.
  • a modified petroleum resin obtained by modifying the petroleum resin composed of the C9 fraction can be preferably used.
  • the modified petroleum resin include C9 petroleum resin modified with an unsaturated alicyclic compound, C9 petroleum resin modified with a compound having a hydroxyl group, C9 petroleum resin modified with an unsaturated carboxylic acid compound, and the like. mentioned.
  • Preferable unsaturated alicyclic compounds include cyclopentadiene and methylcyclopentadiene. Further, as the unsaturated alicyclic compound, a Diels-Alder reaction product of alkylcyclopentadiene is also preferable. , tricyclopentadiene and the like. Dicyclopentadiene is particularly preferable as the unsaturated alicyclic compound.
  • a dicyclopentadiene-modified C9 petroleum resin can be obtained by thermal polymerization or the like in the presence of both dicyclopentadiene and a C9 fraction. Examples of the dicyclopentadiene-modified C9 petroleum resin include Neopolymer 130S (manufactured by Nippon Petrochemicals Co., Ltd.).
  • Examples of compounds having a hydroxyl group include alcohol compounds and phenol compounds.
  • Specific examples of alcohol compounds include alcohol compounds having double bonds such as allyl alcohol and 2-butene-1,4 diol.
  • As the phenol compound alkylphenols such as phenol, cresol, xylenol, p-tert-butylphenol, p-octylphenol, and p-nonylphenol can be used. These hydroxyl-containing compounds may be used alone, or two or more of them may be used in combination.
  • C9 petroleum resins having hydroxyl groups are produced by thermally polymerizing a (meth)acrylic acid alkyl ester or the like together with a petroleum fraction to introduce an ester group into the petroleum resin, and then reducing the ester group. It can be produced by a method of hydrating the double bond after remaining or introducing the double bond therein.
  • the C9 petroleum resin having a hydroxyl group those obtained by various methods as described above can be used, but from the viewpoint of performance and production, it is preferable to use a phenol-modified petroleum resin or the like.
  • the phenol-modified petroleum resin is obtained by cationic polymerization of a C9 fraction in the presence of phenol, is easy to modify, and is inexpensive. Examples of the phenol-modified C9 petroleum resin include Neopolymer E-130 (manufactured by Nippon Petrochemicals Co., Ltd.).
  • the C9 petroleum resin modified with the unsaturated carboxylic acid compound can be modified with an ethylenically unsaturated carboxylic acid.
  • ethylenically unsaturated carboxylic acids include (anhydrous) maleic acid, fumaric acid, itaconic acid, tetrahydro(anhydrous) phthalic acid, (meth)acrylic acid and citraconic acid.
  • the unsaturated carboxylic acid-modified C9 petroleum resin can be obtained by thermally polymerizing a C9 petroleum resin and an ethylenically unsaturated carboxylic acid.
  • maleic acid-modified C9 petroleum resins are preferred.
  • unsaturated carboxylic acid-modified C9 petroleum resins include Neopolymer 160 (manufactured by Nippon Petrochemicals Co., Ltd.).
  • a copolymer resin of C5 fraction and C9 fraction obtained by thermal decomposition of naphtha can be preferably used.
  • the C9 fraction is not particularly limited, but is preferably a C9 fraction obtained by thermal cracking of naphtha.
  • TS30, TS30-DL, TS35, TS35-DL, etc. of the Struktol series manufactured by SCHILL & SEILACHER can be mentioned.
  • examples of the phenolic resin include alkylphenol formaldehyde resins and rosin-modified products thereof, alkylphenol acetylene resins, modified alkylphenol resins, terpenephenol resins, and the like. Hitachi Chemical Co., Ltd.), p-tert-butylphenol acetylene resin colesine (BASF), and the like.
  • examples of coal-based resins include coumarone-indene resins
  • examples of xylene-based resins include xylene formaldehyde resins.
  • polybutene can also be used as a resin having tackifying properties.
  • the content of the tackifier is preferably 2 parts by mass or more, more preferably 4 parts by mass or more, and preferably 10 parts by mass or less with respect to 100 parts by mass of the rubber component. .
  • the content of the tackifier is 2 parts by mass or more with respect to 100 parts by mass of the rubber component, the effect of improving the adhesiveness of the rubber composition is increased, and workability during tire molding is further improved.
  • the content of the tackifier is less than 2 parts by mass with respect to 100 parts by mass of the rubber component, tack tends to be insufficient in terms of workability during tire molding.
  • the content of the tackifier is 2 to 10 parts by mass with respect to 100 parts by mass of the rubber component, the effect of improving the adhesiveness of the rubber composition is increased, and the workability during tire molding is further improved. improves.
  • the RFID tag coating rubber composition of the present invention preferably contains silica, a vulcanizing agent, a vulcanization accelerator, and a silane coupling agent in addition to the rubber component, oil, and tackifier described above.
  • the coating rubber composition for RFID tags of the present invention may optionally contain various components commonly used in the rubber industry, such as fillers other than silica, antioxidants, waxes, and softeners other than oil. Agents, processing aids, stearic acid, zinc oxide (zinc white) and the like may be appropriately selected and contained within a range that does not impair the object of the present invention. Commercially available products can be suitably used as these compounding agents.
  • the crack resistance and elastic modulus of the rubber composition can be improved without increasing the dielectric constant of the rubber composition.
  • the relative dielectric constant of the rubber composition is preferably 4.0 or less, more preferably 2.5 or less.
  • the silica include wet silica (hydrous silicic acid), dry silica (anhydrous silicic acid), calcium silicate, aluminum silicate, etc. Among these, wet silica is preferable. These silicas may be used singly or in combination of two or more.
  • the silica content is preferably 40 to 100 parts by mass with respect to 100 parts by mass of the rubber component.
  • Vulcanizing agents include sulfur.
  • the sulfur preferably contains insoluble sulfur.
  • Insoluble sulfur is sulfur that is insoluble in carbon disulfide (amorphous polymeric sulfur), has lower solubility in rubber components than soluble sulfur, and is less likely to bloom.
  • the ratio of insoluble sulfur in sulfur is preferably 50 to 90% by mass from the viewpoint of further improving workability during tire molding.
  • the content of the vulcanizing agent is preferably 6.0 parts by mass or more with respect to 100 parts by mass of the rubber component.
  • vulcanization accelerators include guanidine-based vulcanization accelerators, sulfenamide-based vulcanization accelerators, thiazole-based vulcanization accelerators, thiuram-based vulcanization accelerators, and dithiocarbamate-based vulcanization accelerators.
  • guanidine-based vulcanization accelerators are preferred.
  • guanidine-based vulcanization accelerators 1,3-diphenylguanidine (DPG) is particularly preferred.
  • DPG 1,3-diphenylguanidine
  • the content of the vulcanization accelerator is 0.1 to 1.0% per 100 parts by mass of the rubber component. It is preferably 0 parts by mass.
  • the rubber composition contains a silane coupling agent
  • the interaction between the rubber component and silica increases, and the dispersibility of silica in the rubber component improves.
  • the action of silica can be fully exhibited, and the crack resistance and elastic modulus of the rubber composition can be further improved.
  • the silane coupling agent include bis(3-triethoxysilylpropyl)tetrasulfide, bis(3-triethoxysilylpropyl)trisulfide, bis(3-triethoxysilylpropyl)disulfide, and bis(2-triethoxysilyl).
  • ethyl)tetrasulfide bis(3-trimethoxysilylpropyl)tetrasulfide, bis(2-trimethoxysilylethyl)tetrasulfide, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 2-mercaptoethyltri Methoxysilane, 2-mercaptoethyltriethoxysilane, 3-trimethoxysilylpropyl-N,N-dimethylthiocarbamoyl tetrasulfide, 3-triethoxysilylpropyl-N,N-dimethylthiocarbamoyl tetrasulfide, 2-triethoxysilyl ethyl-N,N-dimethylthiocarbamoyl tetrasulfide, 3-trimethoxysilylpropyl benzothiazolyl tetrasulf
  • the content of the silane coupling agent is 5 to 5 of the content of the silica. It is preferably 20% by mass (that is, 5 to 20 parts by mass with respect to 100 parts by mass of silica).
  • the RFID tag coating rubber composition of the present invention may or may not contain carbon black as a filler other than silica.
  • the content of carbon black is preferably 20 parts by mass or less with respect to 100 parts by mass of the rubber component, and is particularly preferably 0 parts by mass (that is, does not contain carbon black).
  • the content of carbon black is 20 parts by mass or less with respect to 100 parts by mass of the rubber component, the relative dielectric constant of the rubber composition decreases, and the communication distance of the RFID tag becomes longer.
  • the dielectric constant of the rubber composition is further lowered, further increasing the communication range of the RFID tag.
  • the method for producing the rubber composition is not particularly limited. , heating, extrusion, or the like. Further, vulcanized rubber can be obtained by vulcanizing the obtained rubber composition.
  • the kneading conditions are not particularly limited, and various conditions such as the input volume of the kneading device, the rotation speed of the rotor, the ram pressure, the kneading temperature, the kneading time, the type of the kneading device, etc. It can be selected as appropriate.
  • the kneading device include Banbury mixers, intermixes, kneaders, rolls, etc., which are usually used for kneading rubber compositions.
  • heating conditions there are no particular restrictions on the heating conditions, and various conditions such as the heating temperature, heating time, and heating device can be appropriately selected according to the purpose.
  • the heating device include a heating roll machine or the like which is usually used for heating the rubber composition.
  • the extrusion conditions are also not particularly limited, and various conditions such as extrusion time, extrusion speed, extrusion equipment, and extrusion temperature can be appropriately selected according to the purpose.
  • the extrusion device include an extruder or the like that is usually used for extrusion of a rubber composition.
  • the extrusion temperature can be determined appropriately.
  • a molding vulcanizer with a mold used for vulcanization of a rubber composition can be used.
  • the temperature is, for example, about 100 to 190.degree.
  • the tire of the present invention is characterized by comprising an RFID tag coated with the RFID tag coating rubber composition described above.
  • the tire of the present invention has an RFID tag coated with the RFID tag coating rubber composition described above, and thus has excellent productivity.
  • an RFID tag is generally made of materials such as metals and resins.
  • an RFID tag includes an electronic device portion and an antenna portion connected to the electronic device portion, the housing (or package) of the electronic device portion is made of resin, and the antenna portion is made of metal.
  • the RFID tag is coated in advance with an adhesive such as the trade name "Chemlok” (registered trademark) manufactured by Lord Co., Ltd. By doing so, it is possible to ensure sufficient adhesion between the RFID tag and the coating rubber.
  • the coating rubber of the RFID tag has an adjacent rubber member (for example, a side rubber to be described later). , stiffeners, etc.).
  • the RFID tag coating rubber composition described above has a high elastic modulus and is hard, and therefore has the effect of suppressing stress concentration on the RFID tag.
  • the RFID tag it is preferable to arrange the RFID tag in a portion of the tire that is relatively undistorted during running.
  • the stiffener disposed radially outward of the bead core embedded in the bead portion of the tire and the side rubber positioned outward in the tire width direction of the carcass of the side portion of the tire it is preferred to provide an RFID tag coated with a coating rubber composition. Further, in this embodiment, it is more preferable to dispose the RFID tag coated with the RFID tag coating rubber composition at a portion radially inward of the maximum width portion of the tire.
  • FIG. 1 is a cross-sectional view of one embodiment of the tire of the present invention.
  • a tire 1 shown in FIG. 1 has a pair of bead portions 2, a pair of side portions 3, and a tread portion 4 connected to both side portions 3, and extends like a toroid between the pair of bead portions 2.
  • the stiffener 8 consists of a relatively high-rigidity hard stiffener 8a adjacent to the outer side of the bead core 7 in the tire radial direction, and a relatively low-rigidity soft stiffener 8b adjacent to the tire radially outer side of the hard stiffener 8a.
  • a side rubber 9 is arranged outside the carcass 5 of the side portion 3 in the tire width direction.
  • the carcass 5 includes a main body portion 5a extending toroidally between a pair of bead cores 7, and a folded portion wound around each bead core 7 radially outward from the inner side to the outer side in the tire width direction. and a portion 5b.
  • the structure and number of plies of the carcass 5 are not limited to these.
  • the stiffener 8 is arranged between the main body portion 5a of the carcass 5 and its folded portion 5b.
  • a wire chafer 10 is disposed on the outer surface side of the folded portion 5b of the carcass 5, and the wire chafer 10 further extends along the outer side of the stiffener 8 in the tire width direction.
  • an RFID tag coated with a coating rubber 11 is placed on the inner side of the maximum width portion of the tire in the tire radial direction, between the side rubber 9 and the soft stiffener 8b, and on the outer side of the wire chafer 10 in the tire radial direction. 12 are placed.
  • the coating rubber composition for RFID tags described above is used for the coating rubber 11 .
  • the RFID tag 12 coated with the coating rubber 11 (RFID tag-rubber composite) is prepared by, for example, preparing two rubber sheets made of the above-described RFID tag coating rubber composition, and inserting the RFID tag 12 between the rubber sheets. It can be produced by sandwiching the By laminating the RFID tag-rubber composite together with other rubber members to form a raw tire and vulcanizing the raw tire, the tire of the present embodiment can be produced.
  • the rubber composition applied to the coating rubber 11 has excellent workability during kneading and tire molding, so the tire 1 shown in FIG. 1 has excellent productivity.
  • the tire of the present embodiment may be obtained by vulcanizing after molding using an unvulcanized rubber composition, or using semi-vulcanized rubber that has undergone a pre-vulcanization step or the like, depending on the type of tire to be applied. After molding, it may be obtained by further vulcanization.
  • the tire of the present embodiment is preferably a pneumatic tire, and the gas to be filled in the pneumatic tire may be normal air or oxygen partial pressure-adjusted air, or nitrogen, argon, helium, or other inert gas. Active gases can be used.
  • the dielectric constant of the vulcanized rubber composition is measured at 860 MHz using a dielectric constant measuring instrument. It is known from past measurements of relative permittivity that the relative permittivity can be estimated from the amount of carbon black in the rubber compound. Therefore, the dielectric constant is calculated by calculation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
PCT/JP2022/037919 2021-11-02 2022-10-11 Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ Ceased WO2023079914A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22889737.7A EP4427949A4 (en) 2021-11-02 2022-10-11 RFID TAG COATING RUBBER COMPOSITION AND TIRES
CN202280072785.6A CN118176121A (zh) 2021-11-02 2022-10-11 Rfid标签用涂覆橡胶组合物和轮胎
US18/694,990 US20240417584A1 (en) 2021-11-02 2022-10-11 Rfid-tag coating rubber composition, and tire
JP2023557917A JPWO2023079914A1 (https=) 2021-11-02 2022-10-11

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-179850 2021-11-02
JP2021179850 2021-11-02

Publications (1)

Publication Number Publication Date
WO2023079914A1 true WO2023079914A1 (ja) 2023-05-11

Family

ID=86241316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/037919 Ceased WO2023079914A1 (ja) 2021-11-02 2022-10-11 Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ

Country Status (5)

Country Link
US (1) US20240417584A1 (https=)
EP (1) EP4427949A4 (https=)
JP (1) JPWO2023079914A1 (https=)
CN (1) CN118176121A (https=)
WO (1) WO2023079914A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011225730A (ja) * 2010-04-20 2011-11-10 Bridgestone Corp ゴム組成物およびそれを用いたタイヤ
JP2019502769A (ja) * 2015-11-09 2019-01-31 ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー 電子通信モジュール用のゴムコーティング、同一のものを含む電子モジュール、及び関連方法
JP2021091849A (ja) * 2019-12-10 2021-06-17 住友ゴム工業株式会社 ゴム組成物の製造方法およびタイヤの製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4549164B2 (ja) * 2004-11-17 2010-09-22 住友ゴム工業株式会社 空気入りタイヤおよびその製造方法
JP5146309B2 (ja) * 2006-02-27 2013-02-20 横浜ゴム株式会社 ゴム被覆ｒｆｉｄモジュール及びそれを埋設した空気入りタイヤ
CN104974678A (zh) * 2014-04-04 2015-10-14 日东电工（上海松江）有限公司 粘合片
JP6754168B2 (ja) * 2014-08-08 2020-09-09 株式会社ブリヂストン タイヤ
WO2016105929A1 (en) * 2014-12-22 2016-06-30 Bridgestone Americas Tire Operations, Llc Rubber compositions for radio devices in tires
DE102018213664A1 (de) * 2018-08-14 2020-02-20 Continental Reifen Deutschland Gmbh Technischer Gummiartikel aufweisend mindestens eine Sende- und/oder Empfangsvorrichtung und Verwendung einer Klebemittelzusammensetzung zur Befestigung mindestens einer Sende- und/oder Empfangsvorrichtung auf einer Fläche eines technischen Gummiartikels
CN113403009B (zh) * 2021-06-30 2022-09-06 佛山南宝高盛高新材料有限公司 一种零售包装rfid标签用热熔压敏胶及其制备方法与应用
EP4169990A1 (en) * 2021-10-22 2023-04-26 Bridgestone Europe NV/SA Rubber coating for radiofrequency identification devices for tyres

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011225730A (ja) * 2010-04-20 2011-11-10 Bridgestone Corp ゴム組成物およびそれを用いたタイヤ
JP2019502769A (ja) * 2015-11-09 2019-01-31 ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー 電子通信モジュール用のゴムコーティング、同一のものを含む電子モジュール、及び関連方法
JP2021091849A (ja) * 2019-12-10 2021-06-17 住友ゴム工業株式会社 ゴム組成物の製造方法およびタイヤの製造方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"The Japan Petroleum Institute Standard: JPI-5S-22-83", FRACTIONED ANALYSIS FOR ASPHALTIC BITUMEN BY COLUMN CHROMATOGRAPHY, 1983
See also references of EP4427949A4

Also Published As

Publication number Publication date
JPWO2023079914A1 (https=) 2023-05-11
EP4427949A1 (en) 2024-09-11
EP4427949A4 (en) 2025-02-19
CN118176121A (zh) 2024-06-11
US20240417584A1 (en) 2024-12-19

Similar Documents

Publication Publication Date Title
JP4037744B2 (ja) ゴム組成物及びそれを用いたタイヤ
JP5250883B2 (ja) ブレーカ用ゴム組成物およびそれを用いた空気入りタイヤ
EP3467020B1 (en) Rubber composition and tire
JP2008174696A (ja) タイヤ用ゴム組成物及びそれを用いた空気入りタイヤ
JP2008184505A (ja) タイヤ用ゴム組成物及びそれを用いた空気入りタイヤ。
CN101679687A (zh) 橡胶组合物及使用了其的充气轮胎
JP2008303329A (ja) サイドウォール用ゴム組成物およびそれを用いた空気入りタイヤ
JP5170513B2 (ja) ビードエイペックス用ゴム組成物およびそれを用いた空気入りタイヤ
JP5557125B2 (ja) 空気入りタイヤ
JP2008303328A (ja) トレッド用ゴム組成物およびそれを用いた空気入りタイヤ
JP2021142862A (ja) タイヤ
EP3243873B1 (en) Rubber composition, member for tread, pneumatic tire, and method for producing rubber composition
EP3243872A1 (en) Rubber composition, tread member and pneumatic tire, and method for producing rubber composition
JP5164094B2 (ja) クリンチ用ゴム組成物およびそれを用いた空気入りタイヤ
WO2023079914A1 (ja) Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ
JP2019038875A (ja) タイヤ
WO2023079913A1 (ja) Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ
WO2023079912A1 (ja) Ｒｆｉｄタグ用コーティングゴム組成物及びタイヤ
JP7672622B2 (ja) タイヤ
JP7397293B2 (ja) タイヤ用ゴム組成物およびそれを用いた空気入りタイヤ
JP2026011905A (ja) タイヤ
JP5182790B2 (ja) カーカスプライ用ゴム組成物およびそれを用いた空気入りタイヤ
JP2014040523A (ja) タイヤ用ゴム組成物および空気入りタイヤ

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: 22889737

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023557917

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 18694990

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 202280072785.6

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2022889737

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022889737

Country of ref document: EP

Effective date: 20240603