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Title:
RUBBER/STEEL CORD COMPOSITE AND PNEUMATIC RADIAL TIRE
Document Type and Number:
WIPO Patent Application WO/2010/122772
Kind Code:
A1
Abstract:
A rubber/steel cord composite which can be sufficiently reduced in the contents of an adhesion promoter and sulfur while retaining satisfactory adhesive properties; and a pneumatic radial tire made using the composite as a reinforcement layer. The rubber/steel cord composite is one obtained by: coating or filling the periphery of or the space between one or more core filaments or core strands with an adhesion-promoter-containing filling rubber (A) to form a core; twisting together a plurality of sheath filaments or sheath strands on the periphery of the core to form a layer-twisted steel cord or multi-twisted steel cord; and coating the outer surface of the layer-twisted steel cord or multi-twisted steel cord with a coating rubber (C). The rubber/steel cord composite is characterized in that the coating rubber (C) contains an adhesion promoter in an amount equal to or larger than the amount of the adhesion promoter contained in the filling rubber (A).

Inventors:
NISHIMURA, Mitsuhiro (Kuroiso Plant 800, Shimonakano, Nasushiobara-sh, Tochigi 46, 〒3293146, JP)
Application Number:
JP2010/002826
Publication Date:
October 28, 2010
Filing Date:
April 19, 2010
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (10-1, Kyobashi 1-chome Chuo-k, Tokyo 40, 〒1048340, JP)
株式会社ブリヂストン (〒40 東京都中央区京橋1丁目10番1号 Tokyo, 〒1048340, JP)
International Classes:
D07B1/16; B60C1/00; B60C9/00; D07B1/06
Foreign References:
JPH09109608A
JP2002302885A
JP2002088667A
JP2008308808A
JP2002338749A
JP2003011613A
JP2007313944A
Other References:
See also references of EP 2423381A1
Attorney, Agent or Firm:
SUGIMURA, Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigaseki, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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