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Patent Searching and Data


Title:
STEEL CORD-RUBBER COMPOSITE AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2020/246569
Kind Code:
A1
Abstract:
The present invention is a steel cord-rubber composite comprising a rubber composition and steel cords, and is characterized in that: the rubber composition contains a rubber component, a filler, a thermosetting resin, a methylene donor, a thiuram-based vulcanization accelerator, and a sulfonamide-based vulcanization accelerator, and has a cobalt compound content of 0.01 parts by mass or less; and the steel cords have been plated with a ternary alloy. The present invention improves the adhesiveness of the steel cord-rubber composite, particularly the adhesiveness after hygrothermal degradation, and also improves fuel economy and crack propagation resistance of a pneumatic tire in which this steel-cord rubber composite is used, and achieves a favorable balance between both.

Inventors:
OZAKI TAKUYA (JP)
Application Number:
PCT/JP2020/022230
Publication Date:
December 10, 2020
Filing Date:
June 05, 2020
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
D07B1/06; B60C1/00; B60C9/00; C08K3/04; C08K5/3477; C08K5/40; C08K5/44; C08L21/00
Domestic Patent References:
WO2015177838A12015-11-26
WO2016143756A12016-09-15
Foreign References:
JP2017007427A2017-01-12
JP2017185938A2017-10-12
JPH0229325A1990-01-31
JP2014019974A2014-02-03
JP2002013083A2002-01-18
JPH02212524A1990-08-23
CN105440333A2016-03-30
CN107177069A2017-09-19
KR20190056703A2019-05-27
US20140374009A12014-12-25
JP2020063368A2020-04-23
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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