(19)
(11) EP 1 674 521 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
18.10.2006 Bulletin 2006/42

(43) Date of publication:
28.06.2006 Bulletin 2006/26

(21) Application number: 04792617.5

(22) Date of filing: 13.10.2004
(51) International Patent Classification (IPC): 
C08L 21/00(2006.01)
C07D 341/00(2006.01)
 C08K 5/45(2006.01)
(86) International application number:
PCT/JP2004/015451
(87) International publication number:
WO 2005/035647 (21.04.2005 Gazette 2005/16)
(84) Designated Contracting States:
DE FR IT

(30) Priority: 14.10.2003 JP 2003353974
24.10.2003 JP 2003364613
13.11.2003 JP 2003383808
13.11.2003 JP 2003383849
13.11.2003 JP 2003383943
14.11.2003 JP 2003385220
17.11.2003 JP 2003386800
18.11.2003 JP 2003388197
20.11.2003 JP 2003390979
27.11.2003 JP 2003397146

(71) Applicant: THE YOKOHAMA RUBBER CO., LTD.
Tokyo 105-8685 (JP)

(72) Inventors:
  • CHOI, Wonmun; c/o The Yokohama Rubber Co., Ltd.
    Hiratsuka-shi, Kanagawa 254-8601 (JP)
  • MATSUMURA, Tomoyuki c/o The Yokohama Rubber Co Ltd
    Hiratsuka-shi, Kanagawa 254-8601 (JP)
  • AMINO, Naoya; c/o The Yokohama Rubber Co., Ltd.
    Hiratsuka-shi, Kanagawa 254-8601 (JP)
  • TAKASE, Kazuhiro c/o The Yokohama Rubber Co., Ltd.
    Hiratsuka-shi, Kanagawa 254-8601 (JP)
  • KANENARI, Daisuke c/o The Yokohama Rubber Co. Ltd.
    Hiratsuka-shi, Kanagawa 254-8601 (JP)
  • HOTAKA, Takeshi; c/o The Yokohama Rubber Co., Ltd.
    Hiratsuka-shi, Kanagawa 254-8601 (JP)
  • NATORI, Junichirou c/o The Yokohama Rubber Co Ltd.
    Hiratsuka-shi, Kanagawa 254-8601 (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) RUBBER COMPOSITION CONTAINING CYCLIC POLYSULFIDE AS VULCANIZER AND PNEUMATIC TIRE MADE THEREFROM


(57) A rubber composition containing 100 parts by weight a sulfur-vulcanizable rubber (A) and 0.1 to 30 parts by weight of a vulcanization agent of a cyclic polysulfide (B) having the formula (I):

wherein R is a substituted or unsubstituted C2 to C20 alkylene group, substituted or unsubstituted C2 to C20 oxyalkylene group or alkylene group having an aromatic ring, n is an integer of 1 to 20, x is a number of 2 to 6 on average.