CN113563765A - Coating for self-repairing of tire - Google Patents

Coating for self-repairing of tire Download PDF

Info

Publication number
CN113563765A
CN113563765A CN202111006377.4A CN202111006377A CN113563765A CN 113563765 A CN113563765 A CN 113563765A CN 202111006377 A CN202111006377 A CN 202111006377A CN 113563765 A CN113563765 A CN 113563765A
Authority
CN
China
Prior art keywords
tire
parts
weight
self
coating
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.)
Pending
Application number
CN202111006377.4A
Other languages
Chinese (zh)
Inventor
吕向磊
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202111006377.4A priority Critical patent/CN113563765A/en
Publication of CN113563765A publication Critical patent/CN113563765A/en
Pending legal-status Critical Current

Links

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
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C09D123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C09D123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
    • 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
    • C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
    • 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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/04—Printing inks based on proteins
    • 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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/06—Printing inks based on fatty oils
    • 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
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/08—Printing inks based on natural resins
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a coating for self-repairing a tire, which comprises a base material, a filling material and a curing material; the base material comprises 90-120 parts by weight of butyl rubber and 185-230 parts by weight of liquid rubber; the filling material comprises tackifying resin, stearic acid, zinc oxide and a filling reinforcing agent, wherein the weight part of the tackifying resin is 10-20, the weight part of the stearic acid is 0.5-1.5, the weight part of the zinc oxide is 7-10, and the weight part of the filling reinforcing agent is 5-50; the curing material comprises a vulcanizing agent and an accelerator, wherein the vulcanizing agent accounts for 2-5 parts by weight, and the accelerator accounts for 2-16 parts by weight. The coating for the self-repairing of the tire is close to a fluid state, does not embrittle due to temperature reduction under a low-temperature condition, does not flow under a high-temperature condition, has good viscosity and is not easy to fall off.

Description

Coating for self-repairing of tire
Technical Field
The invention relates to the technical field of tire protection, in particular to a coating for tire self-repairing.
Background
The vehicle realizes the contact with the road surface through the tire and ensures the driving performance of the vehicle, the tire is often used under complicated and harsh conditions, and bears various deformations, loads and high and low temperature effects during driving, so the tire has higher bearing performance, traction performance and buffering performance; at the same time, high abrasion resistance and flexibility resistance, and low rolling resistance and heat build-up are also required. Half of the world's rubber usage for tire production has a huge market.
However, the tire may be punctured by a sharp object during use, and then air leakage or tire burst occurs, which may cause damage to the tire and even cause safety accidents. The statistical data show that 10% of traffic accidents on motorways are due to tire failure, and that one term of tire burst accounts for more than 70% of the total number of accidents caused by tire failure. Therefore, the development of the tire with self-repairing and self-healing functions is of great significance. Heretofore, various techniques have been applied to puncture-resistant tires. Chinese patent CN104962041 discloses a self-repairing polymer memory material for self-repairing of tires, wherein the self-repairing polymer material is polyurethane and thermoplastic rubber, and the self-repairing polymer material is coated on the inner side of the tire to achieve the purpose of puncture prevention. However, the method has low bonding efficiency due to poor compatibility between the polyurethane material and the rubber material, and is easy to crack during use. Chinese patent CN103350620B discloses a puncture-proof tire, which is characterized in that hot melt adhesive which is melted by heating is sprayed on the inner wall of the tire to achieve the purpose of puncture-proof, the hot melt adhesive is one or two of ethylene-vinyl acetate copolymer, polyurethane, styrene-butadiene-styrene block copolymer, polyamide, polyester and ethylene-ethyl acrylate copolymer, and similarly, the compatibility of the materials with the inner wall of the tire is poor, and the sealing performance is poor, so the self-repairing performance is poor. Chinese patent CN211000787U discloses a puncture-proof tire of damaged selfreparing, which is characterized in that a puncture-proof layer and a gel repairing layer are arranged inside the tire, the hardness of the puncture-proof layer is large, the puncture-proof layer can be used for blocking the acupuncture, and the gel layer can be used for repairing the puncture hole, thereby achieving the effect of puncture-proof, but the problems of large noise and poor repairing effect exist.
Although various self-repairing technologies exist, the self-repairing tire still has a plurality of problems, (1) the filling property and the air tightness of a self-repairing coating are still insufficient, and the self-repairing performance is poor; (2) the coating has poor adhesiveness and cannot meet the requirement of high-speed running of vehicles; (3) the coating hardness is too high, so that the noise is high and the comfort is poor in the running process of the vehicle.
Disclosure of Invention
In view of the above problems, the present invention is directed to provide a tire self-repairing coating which is in a fluid state, does not embrittle at low temperatures due to temperature reduction, has good adhesion, and is less likely to come off.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a tire self-repairing coating comprises a base material and is characterized in that: also comprises a filling material and a curing material; 275-350 parts by weight of the base material, 18-75 parts by weight of the filling material and 5-18 parts by weight of the curing material.
Further, the base material comprises 90-120 parts by weight of butyl rubber and 185-230 parts by weight of liquid rubber.
Further, the liquid rubber is one or more of liquid butadiene rubber, polyisobutylene rubber and liquid polyisoprene.
Furthermore, the filling material comprises tackifying resin, stearic acid, zinc oxide and a filling reinforcing agent, wherein the weight portion of the tackifying resin is 10-20, the weight portion of the stearic acid is 0.5-2.5, the weight portion of the zinc oxide is 7-10, and the weight portion of the filling reinforcing agent is 5-50.
Further, the filling reinforcing agent is one or more of carbon black, white carbon black and calcium carbonate.
Further, the curing material comprises a vulcanizing agent and an accelerator, wherein the vulcanizing agent accounts for 2-5 parts by weight, and the accelerator accounts for 2-16 parts by weight.
Further, the vulcanizing agent is one or more of sulfur, p-benzoquinone dioxime and phenolic resin.
Further, the accelerator is one or more of tetramethylthiuram disulfide, benzothiazole disulfide, mercaptobenzothiazole, tetramethylthiuram monosulfide, N-cyclohexane-2-benzothiazole sulfonamide and zinc N-ethyl-N-benzodithiocarbamate.
The invention has the beneficial effects that: compared with the prior art, the invention has the improvement that,
1. the coating for the self-repairing of the tire greatly increases the addition of the liquid rubber, and the prepared coating is closer to a fluid state rather than a solid state, so that the coating cannot be embrittled due to temperature reduction under a low-temperature condition, can bear the low temperature of-40 ℃ at the lowest, cannot flow below 80 ℃, and has good self-repairing performance; the coating is coated on the inner wall of the tire, when the tire is punctured by a sharp nail body or the nail body is pulled out, the self-repairing coating is quickly and automatically filled into a gap to achieve the sealing effect, the repairing efficiency is very high, and the tire repair and the tire replacement are not needed afterwards.
2. The coating for the self-repairing of the tire greatly improves the weight part of tackifying resin in the coating, thereby greatly improving the viscosity of the coating and ensuring that the coating and the inner side wall of the tire are not easy to fall off.
3. The coating for self-repairing the tire in the invention can not increase tire noise and change the comfort of the tire.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the embodiments.
The first embodiment is as follows:
a tire self-repairing coating includes a base material, a filler material, and a curing material;
the base material comprises butyl rubber and liquid rubber, and the liquid rubber is polyisobutylene rubber; wherein the weight portion of the butyl rubber is 100, and the weight portion of the polyisobutylene rubber is 200;
the filling material comprises tackifying resin, stearic acid, zinc oxide and a filling reinforcing agent, wherein the filling reinforcing agent adopts carbon black, the weight part of tackifying resin is 15, the weight part of stearic acid is 2, the weight part of zinc oxide is 7, and the weight part of carbon black is 15.
The curing material comprises a vulcanizing agent and an accelerator, wherein the vulcanizing agent is sulfur, and the accelerator is tetramethyl thiuram disulfide; wherein, the weight portion of the sulfur is 2, and the weight portion of the tetramethyl thiuram disulfide is 6.
The coating for tire self-repairing is prepared and formed by using the coating formula for tire self-repairing in the embodiment, and performance evaluation is performed on the prepared coating for tire self-repairing, which specifically comprises the following steps:
the coating for self-repairing of the tire prepared by the formulation of the coating for self-repairing of the tire in this example was subjected to a high and low temperature fluidity test, and as a result, it was found that it had no fluidity under high temperature conditions, and it met the fluidity requirements of the coating for self-repairing of the tire.
The tire self-healing coating prepared from the formulation of the tire self-healing coating in this example was subjected to the 255/4520R tire static test, the results of which are shown in table 1 below.
Table 1 example one tire self-repair coating 255/4520R tire static test results
Figure BDA0003237218770000041
As can be seen from table 1, the performance of the tire self-repairing coating prepared by using the formulation of the tire self-repairing coating in this example completely meets the technical requirements of the self-repairing tire. It can also be seen from table 1 that the repair effect of the tire self-repairing coating layer does not fail under high temperature conditions, which also indicates that the tire self-repairing coating layer does not have fluidity under high temperature conditions (if fluidity is provided, repair failure is inevitably caused).
Example two:
a tire self-repairing coating includes a base material, a filler material, and a curing material;
the base material comprises butyl rubber and liquid rubber, and the liquid rubber is liquid butadiene rubber; wherein the weight portion of the butyl rubber is 100, and the weight portion of the liquid butadiene rubber is 200;
the filling material comprises 15 parts by weight of tackifying resin, 2 parts by weight of stearic acid, 10 parts by weight of zinc oxide and 7 parts by weight of calcium carbonate.
The curing material comprises a vulcanizing agent and an accelerator, wherein the vulcanizing agent is p-benzoquinone dioxime, and the accelerator is benzothiazole disulfide; wherein, the weight part of the p-benzoquinone dioxime is 3, and the weight part of the benzothiazole disulfide is 2.
The tire self-healing coating prepared from the formulation of the tire self-healing coating in this example was subjected to the 255/4520R tire static test, the results of which are shown in table 2 below.
Table 2 example two tire self-repair coating 255/4520R tire static test results
Figure BDA0003237218770000051
As can be seen from table 2, the tire self-repair coating prepared using the formulation of the tire self-repair coating in this example had poor high temperature performance, but better low temperature performance, probably due to insufficient vulcanization of the formulation, and too good fluidity of the liquid butadiene rubber, resulting in repair failure due to excessive fluidity of the coating at high temperature.
Example three:
a tire self-repairing coating includes a base material, a filler material, and a curing material;
the base material comprises butyl rubber and liquid rubber, and the liquid rubber adopts liquid polyisoprene; wherein the weight portion of the butyl rubber is 100, and the weight portion of the liquid polyisoprene is 200;
the filling material comprises tackifying resin, stearic acid, zinc oxide and a filling reinforcing agent, wherein the filling reinforcing agent adopts carbon black, the weight part of tackifying resin is 15, the weight part of stearic acid is 2, the weight part of zinc oxide is 10, and the weight part of carbon black is 15.
The curing material comprises a vulcanizing agent (without an accelerator), and the vulcanizing agent is phenolic resin; wherein the weight part of the phenolic resin is 5.
The tire self-healing coating prepared from the formulation of the tire self-healing coating in this example was subjected to the 255/4520R tire static test, the results of which are shown in table 3 below.
Table 3 coating 255/4520R for self-repairing tire in example three tire static test results
Figure BDA0003237218770000061
As can be seen from table 3, the tire self-repair coating prepared using the formulation of the tire self-repair coating in this example self-healed to complete failure under low temperature conditions, probably because the low temperature failure of the tire self-repair coating is caused by the direct influence of the coating fluidity due to the crystallization of polyisoprene in the formulation at low temperature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A tire self-healing coating comprising a matrix material, characterized in that: also comprises a filling material and a curing material; 275-350 parts by weight of the base material, 18-75 parts by weight of the filling material and 5-18 parts by weight of the curing material.
2. A tire self-healing coating according to claim 1, wherein: the base material comprises 90-120 parts by weight of butyl rubber and 185-230 parts by weight of liquid rubber.
3. A tire self-healing coating according to claim 2, wherein: the liquid rubber is one or more of liquid butadiene rubber, polyisobutylene rubber and liquid polyisoprene.
4. A tire self-healing coating according to claim 1, wherein: the filling material comprises, by weight, 10-20 parts of tackifying resin, 0.5-2.5 parts of stearic acid, 7-10 parts of zinc oxide and 5-50 parts of filling reinforcing agent.
5. A tire self-healing coating according to claim 4, wherein: the filling reinforcing agent is one or more of carbon black, white carbon black and calcium carbonate.
6. A tire self-healing coating according to claim 1, wherein: the curing material comprises a vulcanizing agent and an accelerator, wherein the vulcanizing agent accounts for 2-5 parts by weight, and the accelerator accounts for 2-16 parts by weight.
7. A tire self-healing coating according to claim 6, wherein: the vulcanizing agent is one or more of sulfur, p-benzoquinone dioxime and phenolic resin.
8. A tire self-healing coating according to claim 6, wherein: the accelerator is one or more of tetramethylthiuram disulfide, benzothiazole disulfide, mercaptobenzothiazole, tetramethylthiuram monosulfide, N-cyclohexane-2-benzothiazole sulfonamide and zinc N-ethyl-N-benzodithiocarbamate.
CN202111006377.4A 2021-08-30 2021-08-30 Coating for self-repairing of tire Pending CN113563765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111006377.4A CN113563765A (en) 2021-08-30 2021-08-30 Coating for self-repairing of tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111006377.4A CN113563765A (en) 2021-08-30 2021-08-30 Coating for self-repairing of tire

Publications (1)

Publication Number Publication Date
CN113563765A true CN113563765A (en) 2021-10-29

Family

ID=78173109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111006377.4A Pending CN113563765A (en) 2021-08-30 2021-08-30 Coating for self-repairing of tire

Country Status (1)

Country Link
CN (1) CN113563765A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080173382A1 (en) * 2007-01-18 2008-07-24 Thulasiram Gobinath Self-healing materials and use thereof for extending the lifespan of a tire
CN103804806A (en) * 2012-11-15 2014-05-21 北京橡胶工业研究设计院 Rubber composite applicable to inside liner of tubeless tire
CN103834336A (en) * 2013-08-14 2014-06-04 洛阳骏腾能源科技有限公司 High-molecular material for improving performance of vehicle tyre
CN104650520A (en) * 2013-11-16 2015-05-27 洛阳骏腾能源科技有限公司 High-molecular self-sealing polymer for automobile tires and preparation method thereof
CN110435359A (en) * 2019-08-26 2019-11-12 项晓村 All-weather tire and preparation method thereof
CN111875891A (en) * 2020-07-14 2020-11-03 浙江工业大学 Self-repairing rubber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080173382A1 (en) * 2007-01-18 2008-07-24 Thulasiram Gobinath Self-healing materials and use thereof for extending the lifespan of a tire
CN103804806A (en) * 2012-11-15 2014-05-21 北京橡胶工业研究设计院 Rubber composite applicable to inside liner of tubeless tire
CN103834336A (en) * 2013-08-14 2014-06-04 洛阳骏腾能源科技有限公司 High-molecular material for improving performance of vehicle tyre
CN104650520A (en) * 2013-11-16 2015-05-27 洛阳骏腾能源科技有限公司 High-molecular self-sealing polymer for automobile tires and preparation method thereof
CN110435359A (en) * 2019-08-26 2019-11-12 项晓村 All-weather tire and preparation method thereof
CN111875891A (en) * 2020-07-14 2020-11-03 浙江工业大学 Self-repairing rubber

Similar Documents

Publication Publication Date Title
JP4929358B2 (en) Anti-puncture, bulletproof, and leak-proof safety tire and method for preparing the same, and leak-proof and hermetically crosslinked polymer material used in the method
JP5275249B2 (en) Self-sealing composition for inflatable articles
US8614276B2 (en) Self-sealing composition for pneumatic object
EP2296918B1 (en) Tyre comprising a sealing material comprising a partially cross-linked styrene-butadiene rubber
CN108290465B (en) Pneumatic tire
CN105899377A (en) Sealant tire
CN103804806A (en) Rubber composite applicable to inside liner of tubeless tire
CN101254736B (en) Leakage-proof tyre and preparation method thereof
CN105419024A (en) Sealing layer composition for anti-pricking tire
WO2020035077A1 (en) Active defense tire and production method therefor
CN111349288A (en) Self-sealing rubber composition and pneumatic tire
CN105968443B (en) Giant-scale engineering radial tyre is combined rim of the mouth shield glue rubber composition
CN1062363A (en) Efficacious liquid for automatically repairing inner tube of tyre
CN114539641A (en) Sizing material composition for self-sealing tire, sizing material and preparation method thereof
CN113563765A (en) Coating for self-repairing of tire
CN104804357A (en) New SRC rubber material and manufacturing process thereof, and sticking-resistant and anti-explosion tire
CN112898672B (en) Rubber composition with self-sealing function, preparation method and tire
JP2002362118A (en) Pneumatic tire and its manufacturing method
JP5106600B2 (en) Tire vulcanizing bladder and pneumatic tire manufactured using the same
JPS60240502A (en) Pneumatic tire having puncture sealing characteristic
KR20210144394A (en) Tire comprising sealant layer
CN112280233A (en) Novel tire safety upgrading material and manufacturing method thereof
CN101574898A (en) Air leak preventing tyre and preparation method thereof
CN110254136A (en) A kind of production method of anti-pricked electric vehicle tyre and the tire
JP2014031038A (en) Pneumatic tire including inner liner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination