Tire

A tire and tread technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problem of wear resistance reduction, and achieve the effect of improved handling stability, good low and good handling stability

Inactive Publication Date: 2010-12-08
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the polymers obtained by these methods can improve various physical properties to a certain extent in each of the compounding of carbon black and compounding silica, in the above-mentioned documents, the method of introducing amino groups into the polymer is mainly described in detail, There is no general description of the relationship between the structure of the polymer itself and various properties
[0010] In addition, in order to further reduce the rolling resistance, by increasing the particle size of carbon black or silica as a filler, although the hysteresis loss is reduced and the rolling resistance is reduced, there is a problem that the wear resistance is reduced.

Method used

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0163] (Preparation of rubber composition)

[0164] Within the scope of not impairing the purpose of the present invention, the rubber composition of the present invention may contain various agents commonly used in the rubber industry, such as vulcanizing agents, vulcanization accelerators, process oils, anti-aging agents, Anti-scorch agent, zinc oxide, stearic acid, etc.

[0165] Examples of the vulcanizing agent include sulfur and the like. The amount of the vulcanizing agent (as sulfur) used in the rubber component is preferably 0.1 to 10.0 parts by mass, more preferably 1.0 to 5.0 parts by mass, based on 100 parts by mass of (A). When the amount is less than 0.1 parts by mass, the breaking strength, wear resistance, and low heat build-up of the vulcanized rubber may decrease, and when it exceeds 10.0 parts by mass, it may cause loss of rubber elasticity.

[0166] The vulcanization accelerator usable in the present invention is not particularly limited, for example, M (2-...

Embodiment

[0173] The present invention will be described in further detail below through examples, but the present invention is by no means limited by these examples.

[0174] In addition, the physical properties of the polymer were measured by the following methods.

[0175] In addition, various characteristics were measured by the following methods.

[0176] "Physical Properties of Unmodified or Modified SBR"

[0177]

[0178] The vinyl bond content (%) was measured by an infrared method (Morrelo method).

[0179]

[0180] Measured by GPC [manufactured by TOSOH CORPORATION, HLC-8020] using a refractometer as a detector, and expressed as a polystyrene-equivalent value using monodisperse polystyrene as a standard. In addition, the column was GMHXL [manufactured by TOSOH CORPORATION], and the eluent was tetrahydrofuran.

[0181] 1+4 , 100℃) Determination>

[0182] According to JIS K6300, the L rotor is preheated for 1 minute, and the rotor operation time is 4 minutes, and it is c...

Synthetic example 1

[0196] Synthesis Example 1: Synthesis of N,N-bis(trimethylsilyl)aminopropylmethyldiethoxysilane

[0197] Under a nitrogen atmosphere, 36g of 3-aminopropylmethyldiethoxysilane (manufactured by Gelest) as the aminosilane site was added to 400ml of dichloromethane solvent in a glass flask equipped with a stirrer, and then further in the solution 48 ml of trimethylsilyl chloride (manufactured by Aldrich), 53 ml of triethylamine were added as protective sites, and stirred at room temperature for 17 hours, after which the solvent was removed by placing the reaction solution in an evaporator to obtain a reaction mixture, and further The resulting reaction mixture was distilled under reduced pressure at 665 Pa to obtain 40 g of N,N-bis(trimethylsilyl)aminopropylmethyldiethoxysilane as a 130-135° C. fraction.

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Abstract

Provided is a tire that not only has excellent wear characteristics but also good control stability typified by wet skid resistance and reduced rolling resistance (low heat buildup). The tire is provided using as the tread a rubber composition wherein (B) 20-150 parts by weight of silica wherein the cetyltrimethylammonium bromide (CTAB) adsorption specific surface area is 60-130 (m2 / g) and the nitrogen adsorption specific surface area (N2SA) by the BET method is 70-140 m2 / g are blended with respect to (A) 100 parts by weight of a rubber component comprising 15-70 wt% of an amine functional group-modified styrene-butadiene copolymer.

Description

technical field [0001] The present invention relates to tires. More specifically, the present invention relates to a tire formed by using a rubber composition containing amine-based functional group-modified styrene-butadiene copolymer and specific silica in the tread, which rubber composition can provide , and tires with reduced rolling resistance and good handling stability. Background technique [0002] With the demand for low fuel consumption of automobiles in recent years, as a rubber material for tires, a rubber material with low rolling resistance, excellent wear resistance, and steering stability represented by wet skid resistance is desired. . [0003] In order to reduce the rolling resistance of a tire, it is known that it is sufficient to reduce the hysteresis loss of vulcanized rubber. Natural rubber, polyisoprene rubber, polybutadiene rubber, etc. are known as rubber materials with low hysteresis loss, but these have a problem of low wet skid resistance. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00B60C1/00C08F8/42C08K3/04C08K3/36C08K5/548
CPCC08K3/36C08K5/548B60C1/0016C08L21/00C08L15/00C08L9/06C08C19/44C08F8/32Y02T10/86C08F212/08C08L2666/08
Inventor 佐坂尚博木村巧
Owner BRIDGESTONE CORP
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