Self-supporting type pneumatic run-flat tire, and insert and bead rubber composition for run-flat capability

A technology of pneumatic tires and tires, which is applied to the reinforcement layer of pneumatic tires, special tires, tire parts, etc., which can solve the problems of weight increase, rubber product weight increase, rubber damage, etc., to improve fuel consumption performance and prevent weight increase , the effect of satisfying the durability characteristics
CN1891498AInactive Publication Date: 2007-01-10HANKOOK TIRE WORLDWIDE
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HANKOOK TIRE WORLDWIDE
Publication Date
2007-01-10
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A self-supporting type pneumatic run-flat tire is optimized in location and gauge of insert rubber at sidewalls, thereby enhancing run-flat and expansion capabilities. The self-supporting type pneumatic run-flat tire comprises an insert and bead rubber composition which comprises syndiotactic 1,2-polybutadiene in order to enhance run-flat capability.
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Description

technical field

[0001] The present invention relates to a self-supporting type (Self-Supporting Type) run flat pneumatic tire with a radial carcass structure suitable for specifications below 60 series and an insert and bead for realizing run flat performance Rubber composition, in particular, to a self-supporting type run-flat pneumatic tire which optimizes the position and size of an insert rubber in a sidewall portion and improves run-flat performance and inflation performance, and which contains syndiotactic 1,2- Insert and bead rubber composition of polybutadiene for runflat performance. Background technique

[0002] Regarding the self-supporting type deflated air tire, patent applications have been proposed by multiple manufacturers before the seventies of last century. Representative examples thereof include US Patent No. 3,949,798 of Firestone Corporation and a patent of Dunlop Corporation filed worldwide in 1974. However, in the self-supporting run-flat pneumatic ...

Claims

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