WO2009004867A1 - Bead insulation rubber composition, pneumatic tire and process for manufacturing pneumatic tire - Google Patents

Bead insulation rubber composition, pneumatic tire and process for manufacturing pneumatic tire Download PDF

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Publication number
WO2009004867A1
WO2009004867A1 PCT/JP2008/059417 JP2008059417W WO2009004867A1 WO 2009004867 A1 WO2009004867 A1 WO 2009004867A1 JP 2008059417 W JP2008059417 W JP 2008059417W WO 2009004867 A1 WO2009004867 A1 WO 2009004867A1
Authority
WO
WIPO (PCT)
Prior art keywords
pneumatic tire
unvulcanized stage
stage
room temperature
bead
Prior art date
Application number
PCT/JP2008/059417
Other languages
French (fr)
Japanese (ja)
Inventor
Jyoji Tamura
Original Assignee
Fuji Seiko Co., Ltd.
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 Fuji Seiko Co., Ltd. filed Critical Fuji Seiko Co., Ltd.
Publication of WO2009004867A1 publication Critical patent/WO2009004867A1/en

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Classifications

    • 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
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04—Bead cores

Abstract

A bead insulation rubber composition capable of providing a pneumatic tire excelling in uniformity. The feature thereof is as follows. The composition contains a vulcanizing agent and is vulcanizable. The JIS hardness A thereof at the unvulcanized stage is in the range of 70 to 99 at room temperature while that at the vulcanized stage is in the range of 90 to 99 at room temperature. The Mooney viscosity thereof at the unvulcanized stage is 60 or below at the temperature during the bead wire coating step. At the unvulcanized stage, as the hardness at room temperature is high, any external force applied to bead core in its twisting direction during the production process would have less impact upon the array of bead wire, thereby attaining exertion of the performance to be naturally exerted. Further, by realization of an appropriate hardness after vulcanization, satisfactorily high performance can be exerted in the final application to a pneumatic tire. Still further, by regulation of the Mooney viscosity at the unvulcanized stage to 60 or less, excellence is ensured in the moldability and handleability at the unvulcanized stage.
PCT/JP2008/059417 2007-07-02 2008-05-22 Bead insulation rubber composition, pneumatic tire and process for manufacturing pneumatic tire WO2009004867A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007174533A JP2010208348A (en) 2007-07-02 2007-07-02 Insulation rubber composition, pneumatic tire, and method for manufacturing pneumatic tire
JP2007-174533 2007-07-02

Publications (1)

Publication Number Publication Date
WO2009004867A1 true WO2009004867A1 (en) 2009-01-08

Family

ID=40225924

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059417 WO2009004867A1 (en) 2007-07-02 2008-05-22 Bead insulation rubber composition, pneumatic tire and process for manufacturing pneumatic tire

Country Status (2)

Country Link
JP (1) JP2010208348A (en)
WO (1) WO2009004867A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015212441A (en) * 2014-05-02 2015-11-26 株式会社ブリヂストン Rubber composition for coating steel wire and method for manufacturing steel cord using the same
JP2016500739A (en) * 2012-10-24 2016-01-14 コンパニー ゼネラール デ エタブリッスマン ミシュラン High styrene content SBR in rubber composition
WO2019176215A1 (en) * 2018-03-12 2019-09-19 横浜ゴム株式会社 Pneumatic tire
JP2019188985A (en) * 2018-04-24 2019-10-31 横浜ゴム株式会社 Pneumatic tire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7402028B2 (en) 2019-12-05 2023-12-20 株式会社ブリヂストン Rubber composition for bead insulation or bead cover, and tire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52109204A (en) * 1976-03-05 1977-09-13 Dunlop Co Ltd Tire bead
JPS6213445A (en) * 1985-07-12 1987-01-22 Yokohama Rubber Co Ltd:The Rubber composition for covering steel cord
JP2003512966A (en) * 1999-11-04 2003-04-08 ピレリ・タイヤ・エルエルシー Raw tire beads and compositions
JP2007076549A (en) * 2005-09-15 2007-03-29 Sumitomo Rubber Ind Ltd Pneumatic tire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52109204A (en) * 1976-03-05 1977-09-13 Dunlop Co Ltd Tire bead
JPS6213445A (en) * 1985-07-12 1987-01-22 Yokohama Rubber Co Ltd:The Rubber composition for covering steel cord
JP2003512966A (en) * 1999-11-04 2003-04-08 ピレリ・タイヤ・エルエルシー Raw tire beads and compositions
JP2007076549A (en) * 2005-09-15 2007-03-29 Sumitomo Rubber Ind Ltd Pneumatic tire

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016500739A (en) * 2012-10-24 2016-01-14 コンパニー ゼネラール デ エタブリッスマン ミシュラン High styrene content SBR in rubber composition
JP2015212441A (en) * 2014-05-02 2015-11-26 株式会社ブリヂストン Rubber composition for coating steel wire and method for manufacturing steel cord using the same
WO2019176215A1 (en) * 2018-03-12 2019-09-19 横浜ゴム株式会社 Pneumatic tire
JP2019156100A (en) * 2018-03-12 2019-09-19 横浜ゴム株式会社 Pneumatic tire
JP6992613B2 (en) 2018-03-12 2022-01-13 横浜ゴム株式会社 Pneumatic tires
JP2019188985A (en) * 2018-04-24 2019-10-31 横浜ゴム株式会社 Pneumatic tire
JP7243036B2 (en) 2018-04-24 2023-03-22 横浜ゴム株式会社 pneumatic tire

Also Published As

Publication number Publication date
JP2010208348A (en) 2010-09-24

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