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Title:
METAL CORD-RUBBER COMPOSITE BODY
Document Type and Number:
WIPO Patent Application WO/2016/052449
Kind Code:
A1
Abstract:
The present invention is a metal cord-rubber composite body obtained by coating one of the following with a rubber composition: a metal cord that comprises a single steel wire having brass plating on the circumferential surface thereof; or a metal cord obtained by twisting together a plurality of the steel wires. The metal cord-rubber composite body is characterized in that the ratio Cu/Zn (atomic ratio) in the outermost surface of the brass plating is 1 to 4 according to X-ray photoemission spectroscopy (XPS), the content of Zn in the outermost surface is 14 at.% or less, and the rubber composition is obtained by blending a rubber component (A) and 0.1 to 10 parts by mass of a co-condensate (B) with respect to 100 parts by mass of the rubber component (A), said co-condensate (B) having a softening point of 150 °C or less and comprising a p-tert-butylphenol-derived constituent unit represented by formula (1), an o-phenylphenol-derived constituent unit represented by formula (2), and a resorcinol-derived constituent unit represented by formula (3). The metal cord-rubber composite body has improved adhesiveness, particularly wet heat adhesiveness, and is obtained by coating a metal cord in which the atomic ratio of Cu/Zn and the like in the outermost surface of a brass-plated layer are limited with a rubber composition that has a novel co-condensate blended thereinto and that does not use p-tert-octylphenol or p-nonylphenol, the use of which may be restricted by laws and regulations.

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Inventors:
YAMAGISHI, Junichi (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
MUSHA, Shinichi (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
KANATOMI, Yoshihiko (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
Application Number:
JP2015/077402
Publication Date:
April 07, 2016
Filing Date:
September 28, 2015
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
D07B1/06; B60C1/00; B60C9/00; C08J5/04; C08L21/00; C08L61/12; C22C9/04
Domestic Patent References:
WO2011030547A12011-03-17
WO2014156870A12014-10-02
Foreign References:
JPS5394577A1978-08-18
JP2007211152A2007-08-23
JP2014152220A2014-08-25
JPS54114552A1979-09-06
CN103012870A2013-04-03
JP2007177386A2007-07-12
JP2011219837A2011-11-04
JP2015163668A2015-09-10
Attorney, Agent or Firm:
OHTANI, Tamotsu (OHTANI PATENT OFFICE, Toranomon ES Bldg. 7F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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