TIRES FOR HEAVY LOAD - BRIDGESTONE CORP

Title:

TIRES FOR HEAVY LOAD

Document Type and Number:

WIPO Patent Application WO/2004/037915

Kind Code:

A1

Abstract:

Tires for heavy load, made by using as the tread rubber a rubber composition obtained by blending 100 parts by mass of a rubber component consisting of 90 to 30 % by mass of a natural rubber (a) and 10 to 70 % by mass of a styrene/butadiene copolymer rubber (b) produced by solution polymerization which rubber contains tin at least one site on the midway of the polymer chain or at the ends thereof and has a styrene content of 28 to 45 % by mass and a vinyl content of less than 30 mole % based on the butadiene moieties with 40 to 60 parts by mass of a filler component which consists of carbon black (c) and silica (d) and in which the amount of the silica (d) ranges from 5 to 20 parts by mass. The tires for heavy load are remarkably improved in irregular wear resistance without impairing the heat build-up properties and the wear resistance.

Inventors:

AOKI HIROFUMI (JP)

Application Number:

PCT/JP2003/013441

Publication Date:

May 06, 2004

Filing Date:

October 21, 2003

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)
AOKI HIROFUMI (JP)

International Classes:

B60C1/00; C08K3/04; C08K3/36; C08K5/25; C08L7/00; C08L9/06; C08L15/00; C08K3/00; C08K5/30; (IPC1-7): C08L7/00; B60C1/00; C08K3/04; C08K3/36; C08K5/25; C08L15/00

Foreign References:

JP2002146101A	2002-05-22
JP2002146102A	2002-05-22
JPH11217004A	1999-08-10
JPH1159116A	1999-03-02
JP2002146101A	2002-05-22
EP1184412A1	2002-03-06
US20010031795A1	2001-10-18
US5856393A	1999-01-05
EP0491229A1	1992-06-24

Other References: