WO1988009355A1 - Pneumatique pour vitesses elevees - Google Patents

Pneumatique pour vitesses elevees Download PDF

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Publication number
WO1988009355A1
WO1988009355A1 PCT/JP1988/000471 JP8800471W WO8809355A1 WO 1988009355 A1 WO1988009355 A1 WO 1988009355A1 JP 8800471 W JP8800471 W JP 8800471W WO 8809355 A1 WO8809355 A1 WO 8809355A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
parts
rubber
group
compound
Prior art date
Application number
PCT/JP1988/000471
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Michio Itoh
Hisao Yamamoto
Nobuyuki Okamura
Original Assignee
Bridgestone Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corporation filed Critical Bridgestone Corporation
Publication of WO1988009355A1 publication Critical patent/WO1988009355A1/ja

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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
    • B60C1/0016—Compositions of the tread
    • 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
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates

Definitions

  • the present invention relates to a pneumatic tire, and more particularly, to a tire that can improve gripping property without significantly impairing heat resistance, particularly blowability. It is suitable for pneumatic high-speed traveling tires that use a rubber composition for reds. Background Technology-Recently, rubber products have become more and more demanding to use. In particular, this tendency has become more noticeable with vehicle tires as automobile performance is improved, roads are paved, and highway networks are improved.Therefore, air with high maneuverability, especially high grip performance The demand for entering tires has increased.
  • the grip performance is an important required characteristic represented by acceleration / deceleration performance and turning performance. The higher these characteristics, the faster and more accurate the vehicle can travel.
  • a rubber having a high glass transition temperature such as a styrene-butadiene copolymer rubber having a high styrene content is selected as a composition for a tire rubber.
  • the dynamic loss coefficient ta n ⁇ of the rubber composition should be selected by selecting a compounding system with a high filling of carbon black or process oil. It was necessary to increase the value.
  • Japanese Patent Laid-Open Publication No. 59-18701 discloses a monomer such as 1.3-butadiene, styrene, or isoprene, and diphenyl 2-isomethacrylate.
  • Tylphosphine diphenyl. 2 acryloyloxyxylyl phosphate, etc.
  • a phenol compound has been used as an anti-aging agent, which is one of the rubber compounding agents, and it has been used in 2 or 6 positions.
  • a phenol compound having a butyl group is also used as an antioxidant, but as an antioxidant, 1 part by weight or less, and at most 1.5 parts by weight or less per 100 parts by weight of the rubber component is used. Only a small amount has been used.
  • the purpose of the present invention is to increase the styrene-content of the styrene-butadiene copolymer and to improve the grip performance without high filling of carbon black or process oil. It is an object of the present invention to provide a pneumatic tire using a rubber composition for a track, which can be improved and which does not impair the heat resistance and the performance originally possessed by the polymer.
  • DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted extensive studies to solve the above-mentioned problems, and as a result, have found that a fueno containing a t-butyl group at the 2 or 6 position, which is known as a phenol-type anti-aging agent.
  • the rubber compound was added to the rubber composition in a much larger amount than the compounding amount of 1.5% by weight or less, which is used for the purpose of preventing aging.
  • the inventors have found that the performance is improved and have completed the present invention.
  • the present invention is based on a blend of synthetic rubber or synthetic rubber and natural rubber, preferably 100 parts by weight of a rubber component having 70% or more synthetic rubber, and at least one t-position at the 2 or 6 position.
  • a blend of synthetic rubber or synthetic rubber and natural rubber preferably 100 parts by weight of a rubber component having 70% or more synthetic rubber, and at least one t-position at the 2 or 6 position.
  • a rubber composition containing 100-125 ZlOOg of carbon black and a softening agent in a total amount of 85-200 parts by weight is used.
  • the present invention relates to a pneumatic tire characterized by being used for a rat.
  • BEST MODE FOR CARRYING OUT THE INVENTION examples of the phenol compound having at least one t-butyl group at the 2 or 6 position used in the present invention include 2,2-methylene-1-bis (4-methyl 6- t-Butylphenol), 2,2'-methyl bis (4 1-ethyl-6-t-butylphenol), 4, 1-butylidene-bis (3-methyl-6-t — Butylphenol), 4,4'-thiobis-one (3-methynole 6-t-butynolephenol), 2,5-di-di-t-butylhydroquinone, 2, 6-di-t-butyl-i 4-Methylphenol, 4,4'-methylphenol (2, 6-di-t-butylphenol), 4,4'-methylbis (2-methanolole 6-t-)
  • Petil-Fruinol 2,2-Chibis (4-Methyl, 2,
  • the phenyl compound used in the present invention has the following formula having an acrylate group or a methacrylic group in it.
  • R 3 and R 4 are each independently a methyl group, an ethyl group or an isopropyl group, and A is an acryloyl group or a methacryloyl group).
  • A is an acryloyl group or a methacryloyl group.
  • R 3 and R 4 in the formula are methyl groups.
  • phenolic compounds are already known as funel-type antiaging agents, but as an antiaging agent, they are usually used in an amount of 1.0% by weight or less, and at most 1.5% by weight or less. It's just that.
  • a phenol compound having at least one t-butyl group at the 2 or 6 position is added to 100 parts by weight of rubber 2. It is required to blend in 5 parts by weight or more, but the reason is that if the amount is less than 2.5 parts by weight, the effect of improving the dull performance is not recognized. On the other hand, if the content is more than 20.0 parts by weight, This deteriorates the blowability of the lead rubber, making it unsuitable for high-speed continuous driving.
  • the ones that have at least one t-butyl group at the 2 or 6 position were used as the phenolic compounds. This is because this compound is the most excellent in improving the dulling property, and also because this compound is used as a heat resistant anti-aging agent and is easily available.
  • the carbon black used in the present invention has a nitrogen adsorption specific surface area of 110 to 190 m 2 / g and a dibutyl phthalate oil absorption amount of 100 to 140 Z l OOg. It's a check. This is because the rubber composition used in tire tires has a large specific surface area, requires a reinforcing material with a well-developed structure, and requires a carbon braid. This is because the total amount of rubber and softening agent is 85 to 200 parts by weight, and wear resistance cannot be maintained unless a high-strength force bomber is used.
  • aroma oil suitable for styrene-butadiene copolymer rubber paraffin wax suitable for non-polar rubber, other pintals, tall oil and the like can be used.
  • a vulcanized rubber sample of the test rubber composition having a size of about 7 mm x 7 mm x 3.5 mm was placed in an electric crucible furnace (manufactured by Chair Co., Ltd.) at a temperature of 20 (300 'at 5'C intervals from TC). While raising it to C, it was left for about 20 minutes at each temperature and then taken out, cut into half, and visually confirmed whether bubbles were generated inside,
  • the road surface grip performance was evaluated by an actual vehicle test for each tire composed of the tested rubber composition as a thread rubber.
  • the road gripping property was expressed as an index by driving the actual vehicle on a circular circuit consisting of straight and curved roads on a dry road surface, and rating the gripping property on the basis of the feeling. The larger the index, the better the grip property.
  • Example 1 Example 1 Example 2 Example 3 Example 4 Example 4 Example 5 Example 6 Example 7
  • Aroma oil 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32
  • Noraffin wax 1.0 1,0 1.0 1.0 1,0 1,0 1.0 1.0
  • Example 1 is a conventional example which does not contain the phenol compound of the present invention
  • Comparative Example 1 is an example in which the total amount of the carbon black and the softening agent is less than 85 parts by weight.
  • Examples 1 to 2 when -75, 5.0, 10.0, 15.0 parts by weight of --2,2'-methylene bis (4-methyl-l-t-butylphenol) was added, 100 parts by weight of the rubber component was added. When calculated as the above, 2.0, 3.6, 7.3, and 10.9% by weight are applied, respectively.
  • Examples 5 to 8 are examples in which the phenol compound was changed and the same amount was used.
  • Example 9 is an example in which a high styrene butadiene rubber was blended with SBR 1712, and Example 10 was a low amount in SBR 1712.
  • Example 11 is an example in which the force-one black is changed to N110
  • Example 12 is an example in which the carbon black and the softening agent are highly compounded.
  • the phenolic compound is the same as in Example 2.
  • Example 13 and Comparative Example 2 are examples in which a blend type of synthetic rubber and natural rubber was used as the rubber component, but Comparative Example 2 did not include the phenol compound.
  • the rubber composition for tires according to the present invention shows that the road surface grip performance can be maintained without significantly impairing the plot temperature and the wear resistance. Is improved by 5 to 15%.
  • blowout temperature was measured according to the above-mentioned test method using each rubber composition having the compounding ratio (parts by weight) shown in Table 2 below.
  • Comparative Example 2 was controlled according to the above test method, and the road surface dull performance was evaluated by an actual vehicle test. The results obtained are also shown in Table 2.
  • the road surface dull performance can be improved even in Examples 13 to 18 in which a predetermined amount of the fuyunol compound according to the present invention was blended. There was no sudden drop in the temperature of the art.
  • INDUSTRIAL APPLICABILITY The rubber composition used for the tire of the present invention does not drastically lower the dull performance at high temperature like a rubber composition having an increased SBR styrene content.
  • blowout temperature and abrasion resistance are not significantly deteriorated at a high temperature such as rubber composition filled with force-ichi bomber and process oil at high temperature. It is possible to improve road surface gripping property 5 to 15% without damaging it.
  • the pneumatic tire of the present invention can be used not only as an athletic running tire having excellent grip performance and heat resistance, but also as a tire for traveling on ice and snow roads and as an all-weather tire. It can also be used favorably as a tire, and is an important invention as a tire for high load and high speed running.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tires In General (AREA)
PCT/JP1988/000471 1987-05-19 1988-05-18 Pneumatique pour vitesses elevees WO1988009355A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP12025187 1987-05-19
JP62/120251 1987-05-19
JP19436287 1987-08-05
JP62/194362 1987-08-05

Publications (1)

Publication Number Publication Date
WO1988009355A1 true WO1988009355A1 (fr) 1988-12-01

Family

ID=26457869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1988/000471 WO1988009355A1 (fr) 1987-05-19 1988-05-18 Pneumatique pour vitesses elevees

Country Status (2)

Country Link
DE (2) DE3890400C2 (enrdf_load_stackoverflow)
WO (1) WO1988009355A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002030188A (ja) * 2000-07-18 2002-01-31 Yokohama Rubber Co Ltd:The ゴム組成物
JP2004204100A (ja) * 2002-12-26 2004-07-22 Bridgestone Corp 空気入りタイヤ
JP2010053289A (ja) * 2008-08-29 2010-03-11 Sumitomo Chemical Co Ltd 熱可塑性ポリマー組成物
JP2013213134A (ja) * 2012-04-02 2013-10-17 Yokohama Rubber Co Ltd:The ゴム組成物および空気入りタイヤ
JP2017075227A (ja) * 2015-10-14 2017-04-20 住友ゴム工業株式会社 タイヤ

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041649B4 (de) 2004-08-27 2006-10-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheologische Elastomere und deren Verwendung
DE102004041650B4 (de) 2004-08-27 2006-10-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheologische Materialien mit hohem Schaltfaktor und deren Verwendung
DE102004041651B4 (de) 2004-08-27 2006-10-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheologische Materialien mit magnetischen und nichtmagnetischen anorganischen Zusätzen und deren Verwendung
DE102005034925B4 (de) * 2005-07-26 2008-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheologische Elastomerkomposite sowie deren Verwendung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4810616B1 (enrdf_load_stackoverflow) * 1969-04-26 1973-04-05
JPS4884785A (enrdf_load_stackoverflow) * 1972-02-16 1973-11-10
JPS6218445A (ja) * 1985-07-16 1987-01-27 Sumitomo Chem Co Ltd ブタジエン系ポリマ−組成物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4810616B1 (enrdf_load_stackoverflow) * 1969-04-26 1973-04-05
JPS4884785A (enrdf_load_stackoverflow) * 1972-02-16 1973-11-10
JPS6218445A (ja) * 1985-07-16 1987-01-27 Sumitomo Chem Co Ltd ブタジエン系ポリマ−組成物

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002030188A (ja) * 2000-07-18 2002-01-31 Yokohama Rubber Co Ltd:The ゴム組成物
JP2004204100A (ja) * 2002-12-26 2004-07-22 Bridgestone Corp 空気入りタイヤ
JP2010053289A (ja) * 2008-08-29 2010-03-11 Sumitomo Chemical Co Ltd 熱可塑性ポリマー組成物
JP2013213134A (ja) * 2012-04-02 2013-10-17 Yokohama Rubber Co Ltd:The ゴム組成物および空気入りタイヤ
JP2017075227A (ja) * 2015-10-14 2017-04-20 住友ゴム工業株式会社 タイヤ
WO2017064939A1 (ja) * 2015-10-14 2017-04-20 住友ゴム工業株式会社 タイヤ
CN108026336A (zh) * 2015-10-14 2018-05-11 住友橡胶工业株式会社 轮胎

Also Published As

Publication number Publication date
DE3890400T1 (enrdf_load_stackoverflow) 1989-05-24
DE3890400C2 (de) 1994-02-10

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