WO2007116983A1 - 表面に遮光層を有する空気入りタイヤ - Google Patents
表面に遮光層を有する空気入りタイヤ Download PDFInfo
- Publication number
- WO2007116983A1 WO2007116983A1 PCT/JP2007/057794 JP2007057794W WO2007116983A1 WO 2007116983 A1 WO2007116983 A1 WO 2007116983A1 JP 2007057794 W JP2007057794 W JP 2007057794W WO 2007116983 A1 WO2007116983 A1 WO 2007116983A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin
- layer
- pneumatic tire
- thermoplastic
- light shielding
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0008—Compositions of the inner liner
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/014—Stabilisers against oxidation, heat, light or ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
Definitions
- the present invention relates to a pneumatic tire having a light shielding layer on the surface, and more specifically, a thermoplastic resin disposed on the pneumatic tire as an air permeation preventive layer.
- the present invention relates to a pneumatic tire in which a problem of deterioration due to sunlight of a layer of a thermoplastic elastomer composition obtained by dispersing an elastomer component in a layer or a thermoplastic resin is improved.
- thermoplastic resin layer on the tire inner surface or a thermoplastic elastomer composition layer in which an elastomer component is dispersed in the thermoplastic resin as an air permeation prevention layer (inner liner). It has been proposed to make it easier (see, for example, Japanese Patent Laid-Open No. 8-216166).
- the thermoplastic resin layer Alternatively, there is a problem that the layer of the thermoplastic elastomer composition is exposed to direct sunlight and the thermoplastic resin or the thermoplastic elastomer composition is deteriorated.
- an object of the present invention is to provide an air permeation preventive layer for a pneumatic tire using a thermoplastic resin layer or a thermoplastic elastomer layer in which an elastomer component is dispersed in a thermoplastic resin as an air permeation preventive layer.
- the purpose is to prevent deterioration due to sunlight.
- a thermoplastic resin layer or a thermoplastic elastomer composition layer in which an elastomer component is dispersed in the thermoplastic resin is disposed on the surface as an air permeation preventive layer, and the thermoplastic resin.
- a pneumatic tire further comprising a light-shielding layer having a light transmittance of less than 10% in the wavelength range of 28 to 400 nm on the surface of the layer or the layer of the thermoplastic elastomer composition. Is done.
- thermoplastic resin for example, by blending carbon black as a light-shielding substance in a release agent applied to the surface of a Darin tire that contacts the surface of a tire vulcanization molding bladder during vulcanization molding, a thermoplastic resin or By improving the weather resistance of the tire surface by forming a light-shielding layer on the surface (tire surface) of the air permeation prevention layer containing a thermoplastic elastomer composition in which an elastomer component is dispersed in a thermoplastic resin
- thermoplastic resin layer or a thermoplastic elastomer composition layer in which an elastomer component is dispersed in a thermoplastic resin on the product surface as an air permeation preventive layer.
- thermoplastic resin or thermoplastic resin it was found that a light-shielding layer was disposed on the surface of the air permeation preventive layer in order to suppress the photodegradation of the thermoplastic elastomer composition in which one elastomer component was dispersed in the air.
- a light shielding layer there is no particular limitation on the application method of such a light shielding layer, and for example, it can be applied to the surface of the air permeation preventive layer in a state dissolved or dispersed in a solvent.
- the green tire inner surface when a pneumatic tire is vulcanized, in order to improve the releasability between the green tire inner surface and the tire vulcanization molding bladder, the green tire inner surface (contact with the bladder)
- a release agent mainly composed of silicone is generally applied to the surface.
- such a general mold release agent for tires has low blackness and poor light shielding properties. Therefore, when a layer of a thermoplastic resin or a thermoplastic elastomer composition is disposed on the surface and used for a tire, The conventional release agent thin film does not contribute to improving the weather resistance.
- a light-shielding substance such as a power pump rack is blended with such a release agent, and acts as a release agent during vulcanization molding, and after vulcanization, an air permeation preventive layer
- a light-shielding agent such as a power pump rack
- the light shielding layer of the pneumatic tire according to the present invention preferably has a light transmittance of less than 10% and more preferably less than 1% in the wavelength range of 2800 to 400 nm. This measurement is performed using a general spectrophotometer and calculating an average value for every 10 nm in the range of 2 80 to 400 M. This wavelength range is the range of ultraviolet rays, since ultraviolet rays are the main cause of photodegradation.
- the light-shielding substance used in the present invention is not particularly limited, and examples thereof include carbon black, aniline black, titanium oxide, zinc oxide, metal powder (flaky aluminum) and the like. High light shielding effect among various light shielding materials Therefore, it is preferable to use carbon black.
- the light-shielding substance, especially the power, the mixing amount of one pump rack is preferably 1.1 to 50% by weight, more preferably 3 to 15% by weight, more preferably the ratio to the solid content of the release agent in the light-shielding layer. Is from 5 to 10% by weight. If the amount is too small, the desired light-shielding effect may not be obtained. On the other hand, if the amount is too large, the releasability deteriorates, which is not preferable.
- non-granulated particles having an average primary particle size of 10 to 80 nm, preferably 10 to 30 nm are preferable. If the primary particle size is too large, the dispersibility is poor, and the light shielding property may be lowered. On the other hand, if the specific surface area is too small, the thickening effect may be lowered, which is not preferable. On the other hand, if it is too large, the viscosity may be excessively increased.
- the pneumatic tire according to a preferred embodiment of the present invention has a tire inner wall (air permeable) as a light-shielding layer comprising a silicone emulsion and an inorganic powder as main components, and a release agent blended with a light-shielding substance. It is characterized by being applied to the surface of the prevention layer.
- the mold release agent used in the present invention is an emulsifier made of silicone oil having a viscosity of 100 to 10 million est (25 ° C), preferably 10 million to 10 million est (25 ° C).
- Oil-in-water emulsion and inorganic powder emulsified in e.g. talc, My strength
- surfactant e.g. anionic surfactant, positive JP2007 / 057794
- a light-shielding substance is blended with an aqueous release agent composed of ionic surfactant, amphoteric surfactant, nonionic surfactant) and water.
- various additives are added to the release agent according to the present invention as long as the effects of the present invention are not impaired. be able to.
- additives include preservatives (for example, sodium nitrite, sodium benzoate) and binders (for example, casein, lecithin, albumin, polyvinyl alcohol, carboxymethyl cellulose, powdered polyolefin resin). be able to.
- thermoplastic resins used for constituting the air permeation preventive layer in the present invention include polyamide resins (for example, nylon 6 (N 6), nylon 6 6 (N 6 6), nylon 4 6 (N 4 6), Nai 1 1 1 (N il), Nylon 1 2 (N 1 2), Nylon 6 10 (N 6 1 0), Nylon 6 1 2 (N 6 1 2), Nylon 6/6 6 Copolymer (N 6/6 6), Nylon ⁇ ⁇ ⁇ Copolymer ( ⁇ 6 ⁇ 6 6/6 10), Nylon MXD 6 ( ⁇ XD 6), Nylon 6 ⁇ , Nylon 6/6 ⁇ Copolymers, nylon 6 6 6 ⁇ ⁇ copolymers, nylon 66 / PPS copolymers and their ⁇ -alkoxyalkylated products), polyester resins (for example, polybutylene terephthalate ( ⁇ ⁇ ⁇ ), polyethylene terephthalate) Sauce (PET), Polyethylene isophthalate (PE 10), PET / PEI copolymer,
- thermoplastic elastomer composition which is another material constituting the air permeation preventive layer in the present invention, is obtained by dispersing an elastomer component in the thermoplastic resin as described above.
- a combination of one or more resins and one elastomer component can be used.
- Such elastomer components are not particularly limited, but include Gen rubbers and their hydrogenated products (eg, NR, IR, epoxidized natural rubber, SBR, BR (high cis BR and low cis BR ), NBR, Hydrogenated NBR, Hydrogenated SBR), Olefin rubber (eg, ethylene propylene rubber (EP DM, EPM), maleic acid modified ethylene propylene rubber (M- EPM), IIR, Y Sobutylene and aromatic vinyl or gen-based monomer copolymer, acrylic rubber (ACM), halogen-containing rubber (eg Br — IIR, C 1 -IIR, bromide of isoprene paramethylstyrene copolymer (B r -IPS), CR, hydrin rubber (C HR 'CHC); chlorosulfonated polyethylene (CSM), chlorinated polyethylene (CM), maleic acid modified chlorinated polyethylene (M-CM)), silicone rubber (eg methyl vinyl
- V-vinyl rubber Fluorine-containing V-vinyl rubber, tellurium rubber, tetrafluoroethylene rubber, pyrene rubber, fluorine-containing silicon rubber, fluorine-containing phosphazene rubber), thermoplastic elastomer (eg, styrene elastomer)
- Polyolefin elastomers Polyadhesive elastomers and the like, and these can be used alone or as any blend.
- thermoplastic resin and the thermoplastic elastomer composition are in a range that does not impair the necessary characteristics of the polymer composition for tires of the present invention, and are provided with a compatibilizer, an anti-aging agent, a vulcanizing agent, Other additives such as a vulcanization accelerator, a vulcanization acceleration aid, a vulcanization retarder, a plasticizer, a filler, a colorant, and a processing aid can be appropriately blended.
- the air-preventing layer may be a thermoplastic film or a thermoplastic film composed only of a thermoplastic X-foam composition, but the thermoplastic film and an adhesive layer having adhesiveness to rubber. It is preferable from the viewpoint of work to use a laminate.
- an adhesive layer include rubber (for example, natural rubber, styrene butadiene rubber, isobutylene-isoprene).
- Rubber compounding reinforcing agents for example, carbon black, calcium carbonate
- adhesive resins for example, RF resins
- tackifiers for example, terpenes
- Resin terpene phenol resin, modified terpene resin, hydrogenated terpene resin, rosin ester, alicyclic saturated hydrocarbon resin), etc.
- vulcanizing agent vulcanization accelerator, oil, anti-aging agent, plastic Examples thereof include a composition in which an agent or the like is appropriately blended, or a phenol resin type (Chemlock 220), a chlorinated rubber type (Chemlock 20.05) and an isocyanate type (Chemlock 40.sup.2).
- Example 1 with poor light shielding properties Example 1 of the present invention, and Comparative Examples 1 and 2 without light shielding properties were tested using a release agent having the following composition (see Table I).
- Example 1 in Table I the silicone emulsion, water, and surfactant were stirred to form a dispersion, and then mica fine powder, talc fine powder, and carbon black were gradually added. A release agent was obtained.
- thermoplastic elastomer composition Preparation of thermoplastic elastomer composition
- thermoplastic elastomer composition in which rubber is finely dispersed in a plastic resin is obtained, extruded into a strand form from the discharge port of a twin-screw kneading extruder, and the obtained strand is pelleted with a cutter.
- a pellet of the thermoplastic elastomer composition of the present invention was produced. This T / JP2007 / 057794
- the composition 1 of Table II was used for the standard example 1, the example 1 and the comparative example 1, and the composition 2 containing the photoaging inhibitor was used for the comparative example 2.
- thermoplastic elastomer composition In order to affix the thermoplastic elastomer composition to the inner surface of the tire, using a twin-screw kneading extruder at a blending ratio (parts by weight) shown in Table III, the thermally crosslinkable polymer and the evening filler are sufficiently kneaded, A strand was extruded from the discharge port, and the resulting strand was cooled with water and formed into a pellet with a cutter to produce a pellet of the adhesive composition.
- thermoplastic elastomer composition and adhesive composition pellets inflation molding of laminated film at a temperature of 230 ° C using a general two-layer inflation molding device
- the laminated film of the thermoplastic elastomer composition and the adhesive composition was obtained.
- the thickness of the thermoplastic elastomer composition was 20 m, and the thickness of the adhesive composition was 50 m.
- the multilayer film is rubbed against a tire molding drum so that the thermoplastic elastomer composition is on the drum side and the adhesive is on the tire member side, and the tire member is laminated thereon and inflated.
- a release agent to the inner liner of the tire inner surface with a spray gun, dry and vulcanize (condition: 180 ° CX 10 minutes), tire size 1 6 5 SR 1 3 tires were made.
- Example 1 and Comparative Example 1 and Comparative Example 2 Using the release agents of Standard Example 1, Example 1 and Comparative Example 1 and Comparative Example 2, the tire prepared by the above method was placed on the ground and left outdoors for 3 months. The tire durability test method was used to evaluate the weather resistance.
- a light shielding layer on the surface of the air permeation prevention layer, for example, by blending a light shielding material into a mold release agent used at the time of vulcanization molding of a tire, Deterioration when irradiated can be prevented.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07741230A EP2002993A4 (en) | 2006-04-04 | 2007-04-02 | PNEUMATIC HAVING SURFACE OF LIGHT BARRIER LAYER |
JP2007539387A JPWO2007116983A1 (ja) | 2006-04-04 | 2007-04-02 | 表面に遮光層を有する空気入りタイヤ |
US12/296,008 US20090288749A1 (en) | 2006-04-04 | 2007-04-02 | Pneumatic tire having light shielding layer on surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006103373 | 2006-04-04 | ||
JP2006-103373 | 2006-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007116983A1 true WO2007116983A1 (ja) | 2007-10-18 |
Family
ID=38581262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/057794 WO2007116983A1 (ja) | 2006-04-04 | 2007-04-02 | 表面に遮光層を有する空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090288749A1 (ja) |
EP (1) | EP2002993A4 (ja) |
JP (1) | JPWO2007116983A1 (ja) |
CN (1) | CN101443202A (ja) |
WO (1) | WO2007116983A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010047124A (ja) * | 2008-08-21 | 2010-03-04 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
JP2010100082A (ja) * | 2008-10-21 | 2010-05-06 | Kaneka Corp | 空気入りタイヤ用インナーライナー |
WO2011148708A1 (ja) * | 2010-05-27 | 2011-12-01 | 横浜ゴム株式会社 | 熱可塑性エラストマー組成物およびその製造方法 |
JP4983922B2 (ja) * | 2007-07-23 | 2012-07-25 | 横浜ゴム株式会社 | 空気入りタイヤ |
WO2013069342A1 (ja) | 2011-11-09 | 2013-05-16 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP5212117B2 (ja) * | 2007-02-06 | 2013-06-19 | 横浜ゴム株式会社 | 空気透過防止層の表面に遮光性保護層を有する空気入りタイヤの製造方法 |
US9469163B2 (en) | 2011-05-13 | 2016-10-18 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2958295B1 (fr) * | 2010-03-31 | 2012-05-04 | Michelin Soc Tech | Pneumatique dont la bande de roulement comporte une composition de caoutchouc comprenant une resine poly(vinylester). |
JP5712532B2 (ja) * | 2010-05-31 | 2015-05-07 | 横浜ゴム株式会社 | 積層体および空気入りタイヤ |
JP5937457B2 (ja) * | 2012-08-08 | 2016-06-22 | 住友ゴム工業株式会社 | 老化防止剤を含有する加硫ゴム組成物の劣化試験方法 |
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JPS6422509A (en) * | 1987-07-16 | 1989-01-25 | Toyo Tire & Rubber Co | Tire having black internal surface |
JPH01314164A (ja) * | 1988-04-11 | 1989-12-19 | Hercules Inc | 空気入り物品用気体遮断構造物 |
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DE69518481T2 (de) * | 1994-09-13 | 2001-04-19 | Gunze Kk | Gasundurchlässiger Schichtstoff aus Gummi und Kunststoff |
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EP0761478B1 (en) * | 1995-03-24 | 2002-09-25 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
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2007
- 2007-04-02 WO PCT/JP2007/057794 patent/WO2007116983A1/ja active Application Filing
- 2007-04-02 JP JP2007539387A patent/JPWO2007116983A1/ja active Pending
- 2007-04-02 CN CNA2007800173422A patent/CN101443202A/zh active Pending
- 2007-04-02 US US12/296,008 patent/US20090288749A1/en not_active Abandoned
- 2007-04-02 EP EP07741230A patent/EP2002993A4/en not_active Withdrawn
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JPH01314164A (ja) * | 1988-04-11 | 1989-12-19 | Hercules Inc | 空気入り物品用気体遮断構造物 |
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Title |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5212117B2 (ja) * | 2007-02-06 | 2013-06-19 | 横浜ゴム株式会社 | 空気透過防止層の表面に遮光性保護層を有する空気入りタイヤの製造方法 |
JP4983922B2 (ja) * | 2007-07-23 | 2012-07-25 | 横浜ゴム株式会社 | 空気入りタイヤ |
JP2010047124A (ja) * | 2008-08-21 | 2010-03-04 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
JP2010100082A (ja) * | 2008-10-21 | 2010-05-06 | Kaneka Corp | 空気入りタイヤ用インナーライナー |
WO2011148708A1 (ja) * | 2010-05-27 | 2011-12-01 | 横浜ゴム株式会社 | 熱可塑性エラストマー組成物およびその製造方法 |
EP2578621A1 (en) * | 2010-05-27 | 2013-04-10 | The Yokohama Rubber Co., Ltd. | Thermoplastic elastomer composition and manufacturing method therefor |
US8546478B2 (en) | 2010-05-27 | 2013-10-01 | The Yokohama Rubber Co., Ltd. | Thermoplastic elastomer composition and method for producing the same |
EP2578621A4 (en) * | 2010-05-27 | 2014-12-03 | Yokohama Rubber Co Ltd | THERMOPLASTIC ELASTOMERIC COMPOSITION AND PROCESS FOR PRODUCING THE SAME |
US9469163B2 (en) | 2011-05-13 | 2016-10-18 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
WO2013069342A1 (ja) | 2011-11-09 | 2013-05-16 | 住友ゴム工業株式会社 | 空気入りタイヤ |
US9902199B2 (en) | 2011-11-09 | 2018-02-27 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
Also Published As
Publication number | Publication date |
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CN101443202A (zh) | 2009-05-27 |
US20090288749A1 (en) | 2009-11-26 |
EP2002993A9 (en) | 2009-05-20 |
EP2002993A2 (en) | 2008-12-17 |
EP2002993A4 (en) | 2009-11-11 |
JPWO2007116983A1 (ja) | 2009-08-20 |
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