WO2021133407A1 - Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée - Google Patents

Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée Download PDF

Info

Publication number
WO2021133407A1
WO2021133407A1 PCT/US2019/068670 US2019068670W WO2021133407A1 WO 2021133407 A1 WO2021133407 A1 WO 2021133407A1 US 2019068670 W US2019068670 W US 2019068670W WO 2021133407 A1 WO2021133407 A1 WO 2021133407A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
carbon black
surface area
acetylene carbon
specific surface
Prior art date
Application number
PCT/US2019/068670
Other languages
English (en)
Inventor
Frederic Vautard
Alex ADELY
Julien MACE
Frederic GROISNE
Original Assignee
Compagnie Generale Des Etablissements Michelin
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 Compagnie Generale Des Etablissements Michelin filed Critical Compagnie Generale Des Etablissements Michelin
Priority to PCT/US2019/068670 priority Critical patent/WO2021133407A1/fr
Publication of WO2021133407A1 publication Critical patent/WO2021133407A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0654—Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms
    • 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
    • B60C1/0016—Compositions of the tread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0654—Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms
    • B29D2030/0655—Constructional or chemical features of the flexible cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2009/00—Use of rubber derived from conjugated dienes, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0013—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof

Definitions

  • the subject matter of the present invention relates to a rubber mix having increased thermal conductivity, similar energy dissipation, and increased durability comprised of a reinforcing filler consisting of a high specific surface area and high structure acetylene carbon black.
  • a rubber composition having high thermal conductivity could be used to construct efficient curing bladders, more performant tires for heavy machines, specific rubber products in vehicle tires and non-tire performant rubber products.
  • Tires are cured in a ridged mold that forms the exterior of the tire.
  • An uncured rubber “green” tire is placed into the mold and a flexible rubber curing bladder is pressurized with hot steam, pressing the green tire against the ridged mold. The heat triggers the vulcanization of the rubber, curing the tire in its finished shape. Improvements to the thermal conductivity of the curing bladder would increase the efficiency of the curing process and speed up cure time, reducing manufacturing cost and enabling new curing procedures by allowing increased heat transfer to the curing rubber product.
  • bladders Because these bladders have a limited lifespan and eventually tear and rupture, they are considered a consumable in the tire manufacturing process.
  • a bladder constructed of an cost-effective rubber mix having superior thermal conductivity and reasonable tear resistance would be particularly useful.
  • Rubber mixtures useful for tire construction with an increased thermal conductivity will enable tires to perform at increased load levels or/and at increased speeds.
  • heavy equipment operates at the limits of the vehicle’s tire’s ability to dissipate heat that would otherwise damage the rubber tire.
  • a tire constructed of a rubber having a higher thermal conductivity could be useful to allow for increased vehicle speed or load carrying capacity, reducing mining costs and increasing productivity.
  • a very large earth mover tire with tread rubber having increased thermal conductivity will reduce the operational temperature of the tread rubber and the under-tread layer.
  • a rubber mixture having increased wear resistance, aggression resistance, summit endurance, and thermal conductivity are examples of the rubber mixture having increased wear resistance, aggression resistance, summit endurance, and thermal conductivity.
  • Rubber having an increased thermal conductivity would be of particular use in certain locations of a tire where heat is of a particular concern. For example, increasing the thermal conductivity of some specific rubber products in the tire will decrease the operational temperature of the corresponding location in the finished cured tire product such as the tread rubber, the under- tread rubber layer, the belt wedges, or the bead area. Of particular use would be a rubber mix having superior thermal conductivity with reasonable fatigue resistance or aggression resistance.
  • Furnace carbon black is a material produced by the incomplete combustion of heavy petroleum products such as FCC tar or coal tar. Carbon black is mainly used as a reinforcing filler, UV inhibitor, and pigment in tires and other rubber products. Furnace carbon black has a limited ability to enhance the thermal conductivity of rubber. Carbon blacks are usually described and compared using an ASTM designation and corresponding names which are used to help group the carbon blacks by method of production and physical characteristics. For example, ASTM International’s D1765 “Carbon Black Used in Rubber Products” defines typical property values for 43 rubber grade carbon blacks.
  • target properties Iodine Adsorption Number and Oil Absorption Number
  • typical properties Oil Absorption Number of Compressed Sample, NSA Multipoint, STSA, Tint Strength, and Pour Density
  • Acetylene carbon black is a type of carbon black made from the thermal decomposition of acetylene gas, resulting in a relatively high thermally conductive rubber when used in a rubber mix. It is known that utilizing acetylene carbon black in a rubber mixture can increase the thermal conductivity of the finished rubber product, but it has long been recognized that acetylene carbon black lacks the ability to increase the structural reinforcement of the rubber to sufficient levels without an additional reinforcing filler. It has been common practice to mix acetylene carbon black with other carbon blacks (like furnace carbon blacks) and reinforcing fillers, such as silica, to create a durable rubber product.
  • other carbon blacks like furnace carbon blacks
  • reinforcing fillers such as silica
  • the acetylene black that is reported in the examples has a specific surface area of 75 m 2 /g.
  • a rubber composition is provided based on at least one diene elastomer, a crosslinking system, and a filler consisting of acetylene carbon black having a surface area of approximately 155 m 2 /g +/- 35 m 2 /g.
  • FIG. 1 provides RPA curing profiles at 150°C. Rubber mixes made with N234 carbon black and the high specific surface area acetylene carbon black products at iso volume concentration, plus one mix at 35 phr of Li 435, which is at iso-rigidity vs. the mix with N234 carbon black.
  • FIG. 2 shows MSV curves of rubber mixes made with N234 carbon black and the high specific surface area acetylene carbon black products at iso-volume concentration, plus one mix at 35 phr of Li 435 acetylene carbon black which is at iso-rigidity vs. the mix with N234 carbon black.
  • FIG. 3 provides a DMA analysis of rubber mixes made with N234 carbon black and the high specific surface area acetylene carbon black products at iso- volume concentration, plus one mix at 35 phr of Li 435 acetylene carbon black which is at iso rigidity vs. the mix with N234 carbon black, showing G* (MPa) across a strain %.
  • FIG. 4 provides a DMA strain sweep of tangent delta versus strain percentage of rubber mixes made with N234 carbon black and the high specific surface area acetylene carbon black products at iso-volume concentration, plus one mix at 35 phr of Li 435 acetylene carbon black which is at iso-rigidity vs. the mix with N234 carbon black). Strain sweep at 23 °C.
  • the use of identical or similar reference numerals in different figures denotes identical or similar features.
  • the present invention provides a thermally conductive durable rubber composition.
  • embodiments and/or methods of the invention one or more examples of which are illustrated in or with the drawings.
  • Each example is provided by way of explanation of the invention, not limitation of the invention.
  • various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention.
  • features or steps illustrated or described as part of one embodiment can be used with another embodiment or steps to yield a still further embodiment or method.
  • the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
  • a true secant modulus of elongation was measured at 10% (MA10), 100% (MA100) and 300% (MA300) at temperature of 23°C based on ASTM Standard D412 on dumb bell test pieces. The measurements were taken in the second elongation; i.e., after an accommodation cycle.
  • the elongation property was measured as strain at break (%) and the corresponding stress at break (MPa), which is measured at 23 °C in accordance with ASTM Standard D412 on ASTM C test pieces.
  • the shear modulus G* at 10% strain and the maximum tan delta dynamic properties for the rubber compositions were measured at 23 °C on a Metravib Model VA400 ViscoAnalyzer Test System in accordance with ASTM D5992-96.
  • the response of a sample of vulcanized material (double shear geometry with each of the two 10 mm diameter cylindrical samples being 2 mm thick) was recorded as it was being subjected to an alternating single sinusoidal shearing stress at a frequency of 10 Hz under a controlled temperature of 23° C. Scanning was effected at an amplitude of deformation of 0.05 to 50% (outward cycle) and then of 50% to 0.05% (return cycle).
  • the shear modulus G* at 10% strain and the maximum value of the tangent of the loss angle tan delta were determined during the return cycle.
  • the mix density was calculated based on its composition using the rule of mixtures applied to the densities of the individual components, the specific heat was measured by Differential Scanning Calorimetry (DSC) and the thermal diffusivity was measured with a LFA 447 NanoFlash system from Netzsch.
  • DSC Differential Scanning Calorimetry
  • Particular embodiments of the present invention include tire treads, tire under tread layer, belt wedges, and bead filler rubber and tires having such components, and other useful articles manufactured at least in part with the rubber compositions disclosed herein.
  • acetylene carbon black available from Denka Co. (560 Highway 44 La Place, LA 70068, U.S.A.), were characterized: Li 400, PG06365, and Li 435. PG06365 is in pelletized form and the other two references are not.
  • Particular embodiments of such rubber compositions include high specific surface area acetylene carbon black with synthetic rubber specifically styrene-butadiene rubber as the majority rubber component without significant additional reinforcing filler.
  • other embodiments may utilize natural rubber, synthetic polyisoprene, and/or essentially saturated elastomers such as butyl rubber. Because of the improved wear, rolling resistance, and processability of these disclosed rubber compositions, they are particularly useful for manufacturing treads for heavy earthmover tires as well as for passenger and truck tires. The combination of tear resistance and increased heat conductivity makes them particularly useful for tire bladder construction.
  • a tire tread may be mounted on a tire during a rebeading process, wherein the old tread on a tire is ground off and a new tread band is bonded to the tire to provide new tread life for a used tire carcass.
  • Such tread bands may be cured before they are bonded to a tire or may be cured after they are mounted on the tire.
  • treads may be formed as tread bands and then later made a part of a tire or they may be formed directly onto a tire carcass by, for example, extrusion and then cured in a mold.
  • phr is “parts per hundred parts of rubber by weight” and is a common measurement in the art wherein components of a rubber composition are measured relative to the total weight of rubber in the composition, i.e., parts by weight of the component per 100 parts by weight of the total rubber(s) in the composition.
  • elastomer and rubber are synonymous terms.
  • based upon is a term recognizing that embodiments of the present invention are made of vulcanized or cured rubber compositions that were, at the time of their assembly, uncured.
  • the cured rubber composition is therefore “based upon” the uncured rubber composition.
  • the cross-linked rubber composition is based upon or comprises the constituents of the cross-linkable rubber composition.
  • a tire tread is the road-contacting portion of a vehicle tire that extends circumferentially around the tire. It is designed to provide the handling characteristics required by the vehicle; e.g., traction, dry braking, wet braking, cornering and so forth - all being preferably provided with a minimum amount of noise being generated and at a low rolling resistance.
  • the undertread rubber is a layer of rubber that has a different composition than the tread rubber, placed between the tread and the tire’s reinforcements.
  • the undertread may be a layer used in retreading to provide adhesion of the tread rubber to the carcass, or may be formed as a part of the new tire from a rubber composition that has properties different than the tread rubber to increase the performance of the tire, such as high-speed durability or fuel economy.
  • the bead filler is layer of rubber above the bead of the tire.
  • the bead filler has a triangular cross section and is positioned to the outside of the carcass ply, or between the carcass ply and a portion of the carcass ply that wraps around the bead.
  • the bead filler provides additional stiffness and support to the lower sidewall.
  • Table 1 Elemental composition of the acetylene carbon blacks and of N234 carbon black.
  • Table 2 Composition of the rubber mixes made with each acetylene carbon black and the N234 carbon black reference.
  • the rubber formulations were prepared by mixing the components given in Table 3, except for the sulphur and the accelerator, in a Banbury mixer operating between 30 and 90 RPM until a temperature between 130 degrees Celsius and 165 degrees Celsius was reached.
  • the accelerator and sulfur were added in the second phase on a mill.
  • Rubber Process Analysis (RPA) curves obtained at 150°C show that the curing profiles of the rubber mixes made with the acetylene carbon black products are similar to the profile obtained with N234 carbon black, except for a longer scorch as shown in FIG. 1 and Table 4. The curing law of the rubber mixes made with acetylene carbon black products is therefore shown to be compatible with industrial practices.
  • Table 3 Scorch times corresponding to rubber mixes made with N234 carbon black and the acetylene carbon black products at iso-volume.
  • the Li 435 reference is more reinforcing than N234 when comparing the tensile stress at break and the value of MA300/MA100.
  • Such a characteristic is both surprising, unique and until now, undisclosed for an acetylene carbon black.
  • the high specific surface area and high structure are shown here to be correlated with this effect.
  • the inventor believes that the high specific surface area and/or the interparticle porosity are responsible for this reinforcing characteristic of the high specific surface area acetylene carbon black.
  • the acetylene carbon blacks show higher rigidifying effect than N234. Also, the upturn of the MSV curve occurs at lower strain, which suggests that the overall structure of the acetylene carbon blacks is also higher.
  • Table 4 Tensile properties indicators corresponding to Figure 2.
  • Table 7 Fatigue properties of the reference mix with N234 and the equivalent mix at iso-rigidity with Li 435.
  • Table 5 Tear resistance values for the rubber mixes made with N234 and the Denka products at iso-volume concentration (plus one mix at 35 phr of Li 435 which is at isorigidity vs. the mix with N234).
  • the thermal conductivity of the mixes with the Denka acetylene carbon blacks was much higher than with N234 (+40% with Li 435, +28% with Li 400 - Table 9).
  • Li 435 leads to a higher thermal conductivity than Li 400 (it is usually considered that larger graphitic particles with lower specific surface area give higher thermal conductivity).
  • More reinforcing fillers are usually more energy dissipative.
  • the thermal conductivity is much higher AND the energy dissipation is slightly lower in the case of Li 435. This should enable a large decrease of operational temperatures for rubber mixes containing Li 435 in comparison to mixes made with N234.
  • High surface area acetylene carbon black refers to acetylene black having a specific surface area of approximately 155 m 2 /g and more specifically in a range between 120 m 2 /g and 190 m 2 /g. Even more specifically a range between 150 m 2 /g and 160 m 2 /g.
  • a rubber mixture comprising high specific surface area acetylene carbon black could accelerate the diffusion of heat in the green tire during curing.
  • large tires like large earthmover tires weighing hundreds of pounds that could result in decreased curing times and gain in productivity, or enable a change of the curing package for the different rubber products, therefore potentially enabling significant changes in thermo-mechanical properties and resistance to ageing.
  • a dimension disclosed as “40 mm” is intended to mean “about 40 mm.”
  • the dimensions and values disclosed herein are not limited to a specified unit of measurement. For example, dimensions expressed in English units are understood to include equivalent dimensions in metric and other units (e.g., a dimension disclosed as “1 inch” is intended to mean an equivalent dimension of “2.5 cm”).
  • the term “method” or “process” refers to one or more steps that may be performed in other ordering than shown without departing from the scope of the presently disclosed invention.
  • the term “method” or “process” may include one or more steps performed at least by one electronic or computer-based apparatus. Any sequence of steps is exemplary and is not intended to limit methods described herein to any particular sequence, nor is it intended to preclude adding steps, omitting steps, repeating steps, or performing steps simultaneously.
  • the term “method” or “process” may include one or more steps performed at least by one electronic or computer-based apparatus having a processor for executing instructions that carry out the steps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne un mélange de caoutchouc ayant une conductivité thermique accrue et une durabilité accrue, composé d'une charge renforçante constituée d'un noir d'acétylène de surface spécifique élevée, le caoutchouc ainsi obtenu présentant des propriétés améliorées de résistance à la déchirure et de conductivité thermique par comparaison avec des mélanges de caoutchoucs comprenant uniquement un renfort à base de noir d'acétylène de faible surface spécifique.
PCT/US2019/068670 2019-12-27 2019-12-27 Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée WO2021133407A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2019/068670 WO2021133407A1 (fr) 2019-12-27 2019-12-27 Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2019/068670 WO2021133407A1 (fr) 2019-12-27 2019-12-27 Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée

Publications (1)

Publication Number Publication Date
WO2021133407A1 true WO2021133407A1 (fr) 2021-07-01

Family

ID=69185759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/068670 WO2021133407A1 (fr) 2019-12-27 2019-12-27 Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée

Country Status (1)

Country Link
WO (1) WO2021133407A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08188672A (ja) * 1995-01-09 1996-07-23 Yokohama Rubber Co Ltd:The 空気入りタイヤ
WO2003050181A1 (fr) * 2001-09-14 2003-06-19 Bridgestone Corporation Composition d'elastomere
KR100411017B1 (ko) * 2001-03-14 2003-12-18 금호타이어 주식회사 브래다용 고무조성물
US20040198890A1 (en) 2002-07-31 2004-10-07 Daisuke Kanenari Rubber composition, and pneumatic tire using the composition
US20050159353A1 (en) 1997-12-03 2005-07-21 Applied Research Systems Ars Holding N.V. Site-specific preparation of polyethylence glycol-GRF conjugates
EP1557294A1 (fr) * 2004-01-20 2005-07-27 The Goodyear Tire & Rubber Company Pneu avec des bandes de roulement comprenant des noirs de carbone diverses
EP1582559A1 (fr) 2004-03-20 2005-10-05 Continental Aktiengesellschaft Composition de caoutchouc pour bande de roulement pneumatique
US20070072984A1 (en) 2005-09-23 2007-03-29 Sandstrom Paul H Tire with rubber tread highly loaded with a combination of filler reinforcement and oil
EP2886370A1 (fr) * 2013-12-19 2015-06-24 The Goodyear Tire & Rubber Company Pneu avec conduit en caoutchouc de transfert de chaleur
US20150184054A1 (en) * 2012-06-12 2015-07-02 Michelin Recherche Et Technique, S.A. Elastomeric composition with improved thermal conductivity
EP3401363A2 (fr) * 2017-05-08 2018-11-14 Sumitomo Rubber Industries, Ltd. Composition de caoutchouc, poche de vulcanisation et pneumatique
JP2019167401A (ja) * 2018-03-22 2019-10-03 住友ゴム工業株式会社 加硫ブラダー用ゴム組成物及び加硫ブラダー

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08188672A (ja) * 1995-01-09 1996-07-23 Yokohama Rubber Co Ltd:The 空気入りタイヤ
US20050159353A1 (en) 1997-12-03 2005-07-21 Applied Research Systems Ars Holding N.V. Site-specific preparation of polyethylence glycol-GRF conjugates
KR100411017B1 (ko) * 2001-03-14 2003-12-18 금호타이어 주식회사 브래다용 고무조성물
WO2003050181A1 (fr) * 2001-09-14 2003-06-19 Bridgestone Corporation Composition d'elastomere
US20040198890A1 (en) 2002-07-31 2004-10-07 Daisuke Kanenari Rubber composition, and pneumatic tire using the composition
EP1557294A1 (fr) * 2004-01-20 2005-07-27 The Goodyear Tire & Rubber Company Pneu avec des bandes de roulement comprenant des noirs de carbone diverses
EP1582559A1 (fr) 2004-03-20 2005-10-05 Continental Aktiengesellschaft Composition de caoutchouc pour bande de roulement pneumatique
US20070072984A1 (en) 2005-09-23 2007-03-29 Sandstrom Paul H Tire with rubber tread highly loaded with a combination of filler reinforcement and oil
US20150184054A1 (en) * 2012-06-12 2015-07-02 Michelin Recherche Et Technique, S.A. Elastomeric composition with improved thermal conductivity
EP2886370A1 (fr) * 2013-12-19 2015-06-24 The Goodyear Tire & Rubber Company Pneu avec conduit en caoutchouc de transfert de chaleur
EP3401363A2 (fr) * 2017-05-08 2018-11-14 Sumitomo Rubber Industries, Ltd. Composition de caoutchouc, poche de vulcanisation et pneumatique
JP2019167401A (ja) * 2018-03-22 2019-10-03 住友ゴム工業株式会社 加硫ブラダー用ゴム組成物及び加硫ブラダー

Similar Documents

Publication Publication Date Title
JP5768901B2 (ja) 空気入りタイヤ
EP3196048A1 (fr) Composition de caoutchouc pour pneus, pneu, et pneu sans air
EP1707402A1 (fr) Pneu radial réduisant la résistance au roulement, comprenant soit une bande pour armature de sommet soit un insert (apex) au niveau des flancs, dont le cahoutchouc est chargé de noir de carbone et de silice.
US10543718B2 (en) Tire comprising a layer of circumferential reinforcing elements
WO2006098110A1 (fr) Bande pneumatique
EP3196053A1 (fr) Pneumatique
EP0794073A2 (fr) Bandage pneumatique pour camions ayant une bande de roulement formée de deux couches
EP3466727A1 (fr) Pneu
US10399386B2 (en) Tire comprising a layer of circumferential reinforcement elements
CN114080323B (zh) 具有低环境足迹的施工场地车辆轮胎
CN102458886A (zh) 重载用充气轮胎
US10518584B2 (en) Tire having improved dynamic properties
JP7020171B2 (ja) 空気入りタイヤ
WO2015079659A1 (fr) Pneumatique
JP2006117099A (ja) 重荷重用空気入りラジアルタイヤ
WO2021133407A1 (fr) Mélange de caoutchouc à noir d'acétylène de surface spécifique élevée et de structure élevée
RU2520491C2 (ru) Резиновая смесь для усиливающего слоя боковины или для боковины и шина
JP6060033B2 (ja) 乗用車用空気入りラジアルタイヤ
CN115734884A (zh) 充气轮胎
AU2017356879B2 (en) Stabilizer ply as an impact break deflector in tires
JP6424895B2 (ja) タイヤ用ゴム組成物
JP6657754B2 (ja) タイヤベルトクッション用ゴム組成物
JP6325305B2 (ja) 空気入りタイヤ
JP2013184331A (ja) トレッドの製造方法、及び該方法により製造されたトレッド、並びに、該トレッドを備えた空気入りタイヤ
AU2017269576A1 (en) Blended layer for improved adhesion in tires

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: 19839787

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19839787

Country of ref document: EP

Kind code of ref document: A1