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Rubber laminates, run-flat tires and pneumatic tires

A rubber layer and rubber technology, used in pneumatic tires, rubber layered products, special tires, etc., can solve the problem of insufficient adhesion of the coloring layer to the pollution resistance of the coloring layer and the adjacent rubber, and achieve excellent run-flat durability. The effect of high adhesion, high adhesion, and excellent stain resistance

Active Publication Date: 2016-07-06
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In addition, according to the technology disclosed in Patent Document 2, for the purpose of improving durability by co-crosslinking with adjacent rubber, the barrier layer contains a diene-based polymer, so the stain resistance of the colored layer and the coloring layer and Insufficient adhesion between adjacent rubbers

Method used

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  • Rubber laminates, run-flat tires and pneumatic tires
  • Rubber laminates, run-flat tires and pneumatic tires
  • Rubber laminates, run-flat tires and pneumatic tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 10、 comparative example 1 to 6

[0095] The rubber composition for the side reinforcing rubber layer was prepared based on the formulation shown in Table 1. In addition, the rubber composition for an inner liner was prepared based on the formulation shown in Table 2. The air permeability coefficient of the rubber composition thus prepared was measured according to the following method. Table 2 shows the results.

[0096] (1) Air permeability coefficient

[0097] The air permeability coefficient at 60° C. of a sample obtained by vulcanizing the rubber composition at 160° C. for 30 minutes was measured by using an air permeability tester M-C1 (manufactured by TOYOSEIKI Co., Ltd.).

[0098] [Table 1]

[0099] Rubber composition for side reinforcing rubber layer

[0100]

[0101] *1 Polybutadiene rubber, "BR01" manufactured by JSR Corporation

[0102] *2 "N550" manufactured by Asahi Carbon Co., Ltd.

[0103] *3N-(1,3-Dimethyl-butyl)-N'-phenyl-p-phenylenediamine, "Nocrac6C" manufactured by Ouchi Shinko ...

Embodiment 11 to 17、 comparative example 7 to 11

[0128] The components shown in Table 5 other than the vulcanization and vulcanization accelerator were mixed and kneaded at about 130° C. for 3.0 minutes using a kneader. Then, sulfur and a vulcanization accelerator were added, and the components were mixed and kneaded for an additional 2.0 minutes at about 100° C. using biaxial open rolls, and taken out as a sheet of predetermined thickness including a barrier layer and a rubber layer. Sample sheets for Examples and Comparative Examples were prepared from the sheets.

[0129] (evaluate)

[0130] (1) Pollution resistance

[0131] The rubber laminates each including the samples prepared for the respective examples and comparative examples between the stained rubber containing a certain amount of pollutants and the white rubber were vulcanized, and the thus vulcanized laminates were placed in a constant temperature bath at 100° C. Before and after 48 hours, the stain resistance was evaluated by measuring the color difference o...

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Abstract

Available in: Rubber Laminates, Run-Flat and Pneumatic Tires. A rubber laminate in which the adhesiveness between a non-diene rubber-containing rubber member and a diene rubber-containing rubber member is high; a run-flat tire manufactured using the rubber laminate, and wherein in The adhesiveness between the side reinforcing rubber layer and the inner liner is high, and it has excellent run-flat durability; and the pneumatic tire, which has high adhesiveness to the sidewall rubber and in which the colored layer has excellent durability Pollution. Solution: A rubber laminate manufactured by laminating a non-diene rubber-containing rubber member (A) and a diene rubber-containing rubber member (B) with each other, wherein the rubber member (A) and the rubber member (B) each contain the same type of vulcanization accelerator.

Description

technical field [0001] The present invention relates to: a rubber laminate having high adhesiveness between a non-diene rubber-containing rubber member and a diene rubber-containing rubber member; obtained by using the rubber laminate, reinforcing rubber at the side A run-flat tire having high adhesion between layers and an inner liner, having excellent run-flat durability; and having high adhesion to siderubber and having excellent stain resistance for a colored layer pneumatic tires. Background technique [0002] As so-called run-flat tires that can safely run for a certain distance even in a state where the internal pressure decreases due to punctures or the like, there are generally known side-reinforced run-flat tires in which a Side reinforcing rubber is arranged on a sidewall portion carcass inner surface to increase rigidity of the sidewall portion. [0003] Run-flat tires typically have an airtight layer disposed on their inner surface. A rubber composition havin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C17/00B60C1/00B60C5/14C08K5/47C08L21/00
CPCB60C5/14C08L9/00B60C2005/145B60C17/0009B60C13/001B60C13/04C08L7/00C08L23/22C08K3/04C08K5/44C08K5/47Y10T152/10495Y10T428/31931B32B7/04B32B25/042B60C13/00B60C17/00
Inventor 岩田匡司加纳典央前川和大吴志英
Owner BRIDGESTONE CORP