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WO2002096679A2 - Pneu et coussin - Google Patents

Pneu et coussin Download PDF

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Publication number
WO2002096679A2
WO2002096679A2 PCT/US2001/017256 US0117256W WO02096679A2 WO 2002096679 A2 WO2002096679 A2 WO 2002096679A2 US 0117256 W US0117256 W US 0117256W WO 02096679 A2 WO02096679 A2 WO 02096679A2
Authority
WO
WIPO (PCT)
Prior art keywords
support
rubber
weight
tire
parts
Prior art date
Application number
PCT/US2001/017256
Other languages
English (en)
Other versions
WO2002096679A3 (fr
Inventor
Michael Grah
Original Assignee
Societe De Technologie Michelin
Michelin Recherche Et Technique S.A.
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 Societe De Technologie Michelin, Michelin Recherche Et Technique S.A. filed Critical Societe De Technologie Michelin
Priority to MXPA03010986A priority Critical patent/MXPA03010986A/es
Priority to PCT/US2001/017256 priority patent/WO2002096679A2/fr
Priority to EP02752015A priority patent/EP1395449A4/fr
Priority to PCT/US2002/017173 priority patent/WO2002096680A1/fr
Priority to CA002448773A priority patent/CA2448773A1/fr
Publication of WO2002096679A2 publication Critical patent/WO2002096679A2/fr
Publication of WO2002096679A3 publication Critical patent/WO2002096679A3/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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
    • B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
    • 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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
    • B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
    • B60C17/061—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient comprising lateral openings

Definitions

  • the present invention is in the field of tires, and more specifically, in the field of pneumatic tires that function with or without inflation pressure.
  • runflat is a pneumatic tire that functions for a certain period to support a vehicle even after inflation pressure has been lost. This tire reduces the need for a spare tire and ancillary equipment. Therefore, in some cases it may achieve substantial savings in vehicle weight, and increase the space for other automotive systems and cargo. Numerous variations of runflat tires have been developed. However, the thickened sidewall of the runflat tire may detract from the normal handling and ride comfort characteristics of the tire, as well as generate significant heat when the tire is in the uninflated condition.
  • Japanese patent specification JP-A-3/82601 discloses a support comprising a substantially cylindrical base and crown, which further comprises an annular body connecting the base and crown.
  • U.S. Patent No. 4,248,286, assigned to the Goodyear Tire & Rubber Co. discloses a support mounted on a rim inside a tire chamber to support the tread portion of the tire in the deflated condition.
  • a support according to the invention comprises a rubber article.
  • the support comprises:
  • the article comprises a rubber, preferably a mix of natural rubber and polybutadiene, a metal salt of a carboxylic acid, preferably zinc dimethacrylate, an effective amount of a filler, preferably carbon black or silica, or both, and a peroxide for curing of said support.
  • the support of the present invention provides weight reduction, reduced hysteresis, enhanced thermal stability, and enhanced thermo-oxidative stability, therefore providing longer service life.
  • Fig. 1 is a side view of a support according to one embodiment of the invention
  • Fig. 2 is an axial section of a mounted assembly according to the invention, in which the support of Fig. 1 is mounted on a wheel rim and is in supporting position against the inside summit of a tire.
  • a support according to the invention comprises a rubber article.
  • the support comprises:
  • the article comprises a rubber, preferably a mix of natural rubber and polybutadiene, a metal salt of a carboxylic acid, preferably zinc dimethacrylate, an effective amount of a filler, preferably carbon black or silica, or both, and a peroxide for curing of said support.
  • the support of the present invention provides weight reduction, reduced hysteresis, enhanced thermal stability, and enhanced thermo-oxidative stability, therefore providing longer service life.
  • a mounted assembly for a motor vehicle comprises a wheel rim, a tire mounted on the rim and the support according to the invention.
  • the rim comprises on each of the peripheral edges thereof a rim seat intended to receive a bead of the tire, the rim therefore having two seats.
  • the rim comprises between the two seats, a bearing surface and a mounting groove connecting the bearing surface to an axially internal lip of one of the seats, or first seat.
  • each of supports 1 essentially have three parts: - a base 2, of generally annular shape;
  • substantially annular crown 3 optionally having longitudinal grooves 5 on the radially external wall thereof, and
  • Fig. 2 illustrates the function of support 1 , namely supporting the tire tread in the event of severe loss of inflation pressure of the tire.
  • the section of Fig. 2 shows a first solid portion 4a of annular body 4 together with a second portion 4b having recesses.
  • Figures 1 and 2 show a first annulus with a substantially rectangular axial section, and one or more annular elements comprising a plurality of recesses and extending substantially axially across the entire width thereof and distributed substantially regularly around the circumference thereof.
  • Such a ring-type support is easier to introduce into a tire, due to the lower flexural rigidity of the various annular elements thereof.
  • the support might have two or more rings connected together in the axial direction of the support. Rubber compositions useable in the support
  • the rubber employed may be a dienic unsaturated elastomer.
  • This type of rubber includes natural rubber, polyisoprene, polybutadiene, and styrene-butadiene rubber.
  • Also useful for the present invention are copolymers of butyl acrylonitrile, and copolymers of butyl paramethyl styrene. These rubbers are curable with a metal salt of a carboxylic acid and a peroxide cure system.
  • Blends of such rubbers may also be employed, [see, e.g., Sartomer Co., Inc., "Sartomer Application Bulletin: Basic Principles of Peroxide-Coagent Curing of Elastomers," April 1997, incorporated by reference.]
  • Preferred rubbers include natural rubber and polybutadiene.
  • the support comprises certain polymerizable metal salts of alpha, beta- ethylenically unsaturated carboxylic acids.
  • Preferred metal salts of carboxylic acid are metal salts of di- and tri-acrylic acid and methacrylic acid.
  • Suitable zinc salts of di- and tri-acrylic acid and methacrylic acid are described in Sartomer Co., Inc., "New Metallic Coagents for Curing Elastomers", April 1998.
  • Suitable acrylates are disclosed in Sartomer Co., Inc., Sartomer Application Bulletin, May 1998, "Chemical Intermediates - Design Unique Polymers with Sartomer' s Specialty Monomers," and Sartomer Co., Inc., Sartomer Application Bulletin, October 1999, “Glass Transition Temperatures of Sartomer Products.” Both publications are incorporated by reference.
  • a particularly preferred monomer for this use is zinc dimethacrylate, which may also be referred to as a metal acrylate.
  • the metal salt of the carboxylic acid is present in an amount from 5 to 70 parts per hundred parts by weight of rubber. In a more preferred embodiment of the invention, the metal salt is present in an amount from 10 to 60 parts per hundred parts by weight of rubber. In a most preferred embodiment of the invention, the metal salt is present in an amount from 20 to 50 parts per hundred parts by weight of rubber.
  • zinc dimethacrylate or other metal salt of a carboxylic acid is combined with at least one of the rubber polymers disclosed above.
  • Zinc dimethacrylate may be prepared by reacting with agitation zinc oxide and methacrylic acid in an amount of from about 0.5 to about 0.6 moles of zinc oxide per mole of methacrylic acid in a liquid medium (e.g., water or a volatile organic liquid such as a liquid hydrocarbon).
  • a liquid medium e.g., water or a volatile organic liquid such as a liquid hydrocarbon.
  • Peroxides which may be employed to catalyze the curing of the elastomer of the support ring, include, but are not limited to: di-cumyl peroxide, bis-(tert-butyl peroxy)-diisopropyl benzene, t-butyl perbenzoate, di-tert-butyl peroxide, 2,5- dimethyl-2,5-di-tert-butylperoxide hexane, etc. About 0.5 to 5 parts per one-hundred parts by weight of rubber has been found effective. However, amounts of peroxide curing agents included in the composition will depend upon the elastomer and coagent loading utilized. Fillers useable in the support
  • Suitable fillers include carbon black, silica, aluminas, aluminum hydroxide, aluminum silicate ("white fillers"), clays, calcium carbonate, glass fibers, microspheres, polymeric fibers such as polyester, nylon, or aramid fibers.
  • the appropriate level of filler would be known to one of skill in the art after reading the present specification.
  • the filler is present in an amount from 0 to 120 parts per hundred parts by weight of elastomer, more preferably 0 to 60 parts per hundred parts by weight of elastomer.
  • the rubber may contain from 0 to 2.5 parts parts by weight of sulfur per hundred parts by weight of rubber.
  • the rubber compositions according to the invention may also contain, in addition to the elastomer(s), reinforcing filler, sulphur and one or more reinforcing white filler/elastomer bonding agent(s), various other constituents and additives usually used in rubber mixtures, such as plasticizers, pigments, antioxidants, vulcanization accelerators, extender oils, processing aids, and one or more agents for coating the reinforcing white filler, such as alkoxysilanes, polyols, amines etc.
  • various other constituents and additives usually used in rubber mixtures such as plasticizers, pigments, antioxidants, vulcanization accelerators, extender oils, processing aids, and one or more agents for coating the reinforcing white filler, such as alkoxysilanes, polyols, amines etc.
  • the rubber composition is composed of the following:
  • Rubber compositions formed with metal salts of carboxylic acids generate less hysteresis than would a conventional filled rubber composition, and so have lower operating temperatures. This reduction in temperature improves the endurance of the support ring under runflat conditions. The reduced hysteresis of this composition is particularly apparent at lower temperatures.
  • the support ring formulated with the zinc dimethacrylate (ZDMA) composition will heat up more slowly than a support made from a conventional carbon black or silica-reinforced rubber at the same stiffness level.
  • the support ring is constructed to operate at a defined level of compressive strain (10%- 15%) at the required loading.
  • a further advantage of application of the present invention is improved thermo- oxidative stability.
  • the internal temperature of the support system approximates the temperature of the tire, about 40°C. This temperature can be as high as 65 °C.
  • the partial pressure of oxygen in the tire chamber is 0.52 bar.
  • the support ring Under runflat conditions, the support ring can heat up to temperatures greater than 100°C. Therefore, in both the pneumatic and the runflat mode, the support ring is subject to harsh oxidizing conditions.
  • a support ring constructed from rubber vulcanized with a sulfur-sulfur accelerator based system would break down more rapidly under such conditions.
  • the ZDMA/peroxide compositions have bond stabilities that are 20% to 130% higher than those of conventional rubber. This increased bond stability results directly in greatly improved thermo-oxidative stability under both inflated and in the runflat mode.
  • Zinc dimethacrylate rubber compositions are also lighter than conventional rubber compositions.
  • these compositions exhibit higher modulus in the operating range of the support ring that allows additional mass reductions, since less material is needed to support the required load. Therefore, one embodiment of the present invention is a support for mounting on a wheel rim inside a vehicle tire, where the support is capable of supporting a tire in the event of a drop in inflation pressure.
  • the support is a rubber article having a composition comprising a metal salt of a carboxylic acid.
  • Another embodiment of the invention is a wheel comprising the support.
  • the support of the present invention shows good cohesion (i.e., greater resistance to initiation of tears and propagation of tears) of the support. This is important when a vehicle is turning, or when the vehicle rides over a sudden depression in the road, briefly subjecting the support to a high level of deformation.
  • the present invention is a support for mounting on a wheel rim inside a vehicle tire, the support being capable of supporting a tire in the event of a drop in inflation pressure.
  • the support is an article having a composition comprising rubber and a metal salt of a carboxylic acid, where the composition is cured with a peroxide curing agent.
  • the present invention is also a wheel comprising the support.
  • the rubber may be a dienic unsaturated elastomer.
  • the rubber includes copolymers of butyl acrylonitrile and copolymers of butyl paramethyl styrene, or mixtures thereof.
  • the support is composed of rubber is selected from the group consisting of natural rubber, polyisoprene, polybutadiene, styrene-butadiene rubber, and mixtures thereof.
  • the metal salt may be selected from the group consisting of di- and tri-acrylates and methacrylates and mixtures thereof.
  • the metal salt of the carboxylic acid is zinc dimethacrylate.
  • the peroxide is selected from the group consisting of di-cumyl peroxide, bis- (tert-butyl peroxy)-diisopropyl benzene, t-butyl perbenzoate, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di-tert-butylperoxide hexane and mixtures thereof.
  • the composition may include a filler, which may be selected from carbon black, silica, aluminas, aluminum hydroxide, aluminum silicate, clays, calcium carbonate, glass fibers, microspheres, polymeric fibers, and mixtures thereof. In one embodiment, the filler is present in an amount from 0 to 120 parts per hundred parts by weight of elastomer.
  • the filler is present in an amount from 0 to 60 parts per hundred parts by weight of elastomer.
  • the composition includes sulfur, in an amount from 0 to 2.5 parts per hundred parts by weight of rubber.
  • the support comprises:
  • annular body connecting the base to the crown, the annular body comprising a circumferentially continuous supporting element with a circumferential median plane, wherein the supporting element comprises: (i) a plurality of partitions extending axially on each side of the circumferential median plane and distributed around the circumference of the support, and
  • joining elements extending substantially circumferentially on one of the sides of the support, each joining element connecting the respective ends of two adjacent partitions which are arranged on the side of the support, the joining elements being arranged alternately in succession on each side of the partitions, wherein, between two adjacent partitions, the joining elements are mutually supported by a rib extending from the crown to the base of the support, such that the joining elements form a continuous joining wall in the form of a gusset extending along the side of the support.
  • the support is comprised of a rubber composition comprising a metal salt of a carboxylic acid, and it includes: a substantially cylindrical base intended to fit around the wheel rim, a substantially cylindrical cap intended to come into contact with the tread strip in the event of a loss of pressure, and leaving a clearance with respect hereto at nominal pressure, and an annular body connecting said base and said cap.
  • the body has a plurality of cavities directed substantially axially and emerging in that face of the body which is intended to be placed on the outboard side of the vehicle, and which extend axially as far as at least halfway into the body without passing through it.
  • the support may comprise 5 to 70 parts by weight of metal salt of a carboxylic acid per hundred parts by weight of rubber. More preferably, it comprises 10 to 60 parts by weight of metal salt of a carboxylic acid per hundred parts by weight of rubber. Most preferably, the support comprises 20 to 50 parts by weight of metal salt of a carboxylic acid per hundred parts by weight of rubber. In one embodiment of the invention, the support comprises 20 to 120 parts by weight of a mixture of silica and carbon black, in any ratio, per hundred parts by weight of rubber.
  • the support comprises 0 to 80% by weight of polybutadiene. In another embodiment of the invention, the support comprises 20 to 100% by weight of natural rubber.
  • Example 1 ZDMA mixes compared to Control Mix Table 1, Composition of Rubber Mixes used in the support ring
  • Santoflex 13 N-(l,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine (Flexsys Rubber Chemicals Ltd., Netherlands)
  • TMQ poly(l,2-dihydro-2,2,4-trimethyl quinoline. It is also known as Vulcanox 4020, by Bayer]
  • Si69 is bis(3-triethoxysilylpropyl) tetrasulphide having the formula [(C 2 H 5 0) 3 Si(CH 2 ) 3 S 2 ] 2 by Degussa Corp. (Ridgefield Park, New Jersey) under the name Si69 (or X50S when supported at a content of 50 percent by weight on carbon black)]
  • the force divided by the original area of the sample under duress is called the stress (shown above in units of mega Pascals).
  • the displacement (movement or stretch) of the material is called the strain.
  • the strain Normally the strain is given as the change in length divided by the original length, and the units are dimensionless.
  • the modulus is the slope of the curve of stress versus strain (stress in the ordinate, strain in the abscissa).
  • the elastic shear modulus (G') of a material is the ratio of the elastic (in-phase) stress to strain and relates to the ability of a material to store energy elastically.
  • the loss modulus (G) of a material is the ratio of the viscous (out of phase) component to the shear strain, and is related to the material's ability to dissipate stress through heat.
  • the ratio of these moduli (G7G") is defined as tangent delta, and indicates the relative degree of viscous to elastic dissipation, or damping of the material.
  • a low tan delta means higher resilience and less hysteresis.
  • G' represents the shear modulus in mega Pascals
  • tan delta represents the relative hysteresis of the material.
  • Control #1 has a composition using precipitated silica as the reinforcing agent.
  • the control is crosslinked with a sulfur/accelerator combination.
  • the modulus of the control is ultimately limited by the maximum amount of filler that can be adequately dispersed in the elastomer and by the need to maintain acceptable viscosity for processing.
  • This data demonstrates that the support compositions containing metal salt acrylates are capable of achieving higher modulus values than the conventional materials while maintaining good processibility. In addition, they have a better compromise between modulus and hysteresis when operating in the 'initial' stage of the runflat condition (10% strain and 40°C) as well as in later stages of the runflat mode (10%) strain and 100°C).
  • Example #2 Comparison of thermo-oxidative aging properties of support ring materials. Two compositions were evaluated for their succeptibility to thermo- oxidative degradation. A standard silica-reinforced and sulfur-cured rubber mix was chosen as the control, and a ZDMA-filled mix was compounded to provide a similar level of imaged modulus at 10% strain. The compositions are shown in Table 3. Both compounds were aged for various times in air at 77°C. Properties were measured after successive aging times and reported in Table 4. This data demonstrates that even though the control mix had a potent combination of antioxidants compared to the ZDMA-filled mix, it was observed to age-harden at a faster rate.
  • the ZDMA-filled mix While the control mix possessed a higher level of elasticity initially, after heat aging for 28 days, the ZDMA-filled mix was found to retain three times more elasticity than the control. For the ZDMA-filled mix, the modulus stayed approximately the same through the 28-day period. However the modulus more than doubled in the conventional mix. For the ZDMA mix, the ultimate rupture stress decreased only slightly, and the ultimate rupture strain decreased about twenty percent. However, for the control, the ultimate rupture stress decreased over thirty percent, and the ultimate rupture strain decreased over seventy-five percent.

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

Abstract

La présente invention concerne un coussin (1) en caoutchouc. Ce coussin comprend une base (2) sensiblement cylindrique qui épouse la forme du tour de jante, une couronne sensiblement cylindrique (3) qui vient en contact avec l'intérieur du sommet du pneu en cas de chute de pression de gonflage, mais laisse un intervalle libre jusqu'au sommet à pression de gonflage nominale, et un corps annulaire (4) reliant la base (2) à la couronne (3). L'article de caoutchouc est fait d'une gomme, de préférence un mélange de gomme naturelle et de polybutadiène, un sel de métal d'un acide carboxylique, de préférence le diméthacrylate de zinc, une quantité suffisance de noir de carbone ou de silice, ou les deux, et un peroxyde pour la vulcanisation de ce coussin. Le coussin (1) de la présente invention permet une réduction de masse, une moindre hystérésis, une stabilité thermique renforcée, ainsi qu'une stabilité thermo-oxydative renforcée, d'où une durée de vie prolongée.
PCT/US2001/017256 2001-05-29 2001-05-29 Pneu et coussin WO2002096679A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MXPA03010986A MXPA03010986A (es) 2001-05-29 2001-05-29 Neumatico de soporte.
PCT/US2001/017256 WO2002096679A2 (fr) 2001-05-29 2001-05-29 Pneu et coussin
EP02752015A EP1395449A4 (fr) 2001-05-29 2002-05-29 Pneu et support
PCT/US2002/017173 WO2002096680A1 (fr) 2001-05-29 2002-05-29 Pneu et support
CA002448773A CA2448773A1 (fr) 2001-05-29 2002-05-29 Pneu et support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/017256 WO2002096679A2 (fr) 2001-05-29 2001-05-29 Pneu et coussin

Publications (2)

Publication Number Publication Date
WO2002096679A2 true WO2002096679A2 (fr) 2002-12-05
WO2002096679A3 WO2002096679A3 (fr) 2003-01-16

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2001/017256 WO2002096679A2 (fr) 2001-05-29 2001-05-29 Pneu et coussin
PCT/US2002/017173 WO2002096680A1 (fr) 2001-05-29 2002-05-29 Pneu et support

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2002/017173 WO2002096680A1 (fr) 2001-05-29 2002-05-29 Pneu et support

Country Status (4)

Country Link
EP (1) EP1395449A4 (fr)
CA (1) CA2448773A1 (fr)
MX (1) MXPA03010986A (fr)
WO (2) WO2002096679A2 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392772A (en) * 1966-06-06 1968-07-16 Firestone Tire & Rubber Co Pneumatic tire and a replaceable unit therewith
US3814158A (en) * 1970-04-03 1974-06-04 Firestone Tire & Rubber Co Run flat device for tires
DE2722885A1 (de) * 1977-05-20 1978-11-23 Continental Gummi Werke Ag Fahrzeugrad
US4248286A (en) * 1978-06-30 1981-02-03 The Goodyear Tire & Rubber Company Safety support assembly for pneumatic tires
US4332918A (en) * 1980-06-30 1982-06-01 Bridgestone Tire Co., Ltd. Nitrile rubber composition having high modulus
US4713409A (en) * 1982-09-21 1987-12-15 The Firestone Tire & Rubber Company Vulcanizable polymeric compositions containing a zinc dimethacrylate adjuvant and method for preparing the adjuvant
US4529770A (en) * 1983-01-10 1985-07-16 The Firestone Tire & Rubber Company Vulcanizable polymeric compositions containing zinc dimethacrylate and fillers
US4720526A (en) * 1986-06-02 1988-01-19 The Firestone Tire & Rubber Company Cured rubber compositions of high modulus
JPH0382601A (ja) * 1989-08-25 1991-04-08 Bridgestone Corp 非空気式車輪
FR2698823B1 (fr) * 1992-12-03 1995-02-17 Hutchinson Dispositif d'anneau perfectionné pour roulage à plat.
US5464899A (en) * 1992-12-30 1995-11-07 Bridgestone Corporation High modulus low hysteresis rubber compound for pneumatic tires
JP3622803B2 (ja) * 1995-11-28 2005-02-23 日本ゼオン株式会社 ゴム組成物
FR2746347A1 (fr) * 1996-03-19 1997-09-26 Michelin & Cie Appui de securite en materiau elastomerique souple pour pneumatique
US6051653A (en) * 1996-09-20 2000-04-18 Exxon Chemical Patents, Inc. Metal salts of acrylic or methacrylic acid as curatives for compositions containing halogenated isomonoolefin-para-aklylstyrene copolymers
AT410094B (de) * 1996-09-20 2003-01-27 Exxon Chemical Patents Inc Metallsalze von acryl- oder methacrylsäure als vulkanisiermittel für halogenierte isomonoolefin/p-alkylstyrol-copolymere enthaltende zusammensetzungen

Also Published As

Publication number Publication date
WO2002096680A1 (fr) 2002-12-05
WO2002096679A3 (fr) 2003-01-16
EP1395449A1 (fr) 2004-03-10
EP1395449A4 (fr) 2004-08-11
CA2448773A1 (fr) 2002-12-05
MXPA03010986A (es) 2004-02-27

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