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Rubber composition and pneumatic tire

A rubber composition, rubber technology, applied in the direction of special tires, tire parts, transportation and packaging, etc., to achieve the effect of balance improvement

Inactive Publication Date: 2013-03-27
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, wet grip performance and wear resistance are examples of the properties required of rubber compositions for automobile tires. These properties are generally in conflict with low fuel consumption, and it is difficult to obtain these respective properties at a high level and in a good balance.

Method used

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  • Rubber composition and pneumatic tire
  • Rubber composition and pneumatic tire
  • Rubber composition and pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0310] Production Example 1 (Synthesis of Polymer 1)

[0311] Wash and dry the stainless steel polymerization reactor with an inner volume of 20 liters, replace with dry nitrogen, and hexane (specific gravity 0.68g / cm 3 ) 10.2kg, 547g of 1,3-butadiene, 173g of styrene, 6.1ml of tetrahydrofuran, and 5.0ml of ethylene glycol diethyl ether were put into the polymerization reaction vessel. Next, 16.0 mmol of bis(diethylamino)methylvinylsilane was made into a cyclohexane solution, and 18.5 mmol of n-butyllithium was made into a n-hexane solution, and were added into a polymerization reaction vessel to start polymerization.

[0312] Copolymerization of 1,3-butadiene and styrene was carried out for 3 hours while the stirring rate was set at 130 rpm and the temperature in the polymerization reactor was 65° C., while continuously supplying monomers into the polymerization reactor. The supplied amount of 1,3-butadiene for the entire polymerization was 821 g, and the supplied amount of ...

manufacture example 2

[0315] Production Example 2 (Synthesis of Polymer 2)

[0316] Wash and dry the stainless steel polymerization reactor with an inner volume of 20 liters, replace with dry nitrogen, and hexane (specific gravity 0.68g / cm 3 ) 10.2kg, 547g of 1,3-butadiene, 173g of styrene, 6.1ml of tetrahydrofuran, and 5.0ml of ethylene glycol diethyl ether were added to the polymerization reaction vessel. Next, a n-hexane solution of 17.3 mmol of n-butyllithium was added to carry out copolymerization of 1,3-butadiene and styrene for 1 hour. During the polymerization, the stirring rate was set at 130 rpm and the temperature in the polymerization reactor was 65° C., and the monomer was continuously supplied into the polymerization reaction container.

[0317] After the 1-hour polymerization, a cyclohexane solution of 14.4 mmol of bis(diethylamino)methylvinylsilane was charged into the polymerization reactor at a stirring rate of 130 rpm and a polymerization reactor internal temperature of 65°C.

...

manufacture example 3（

[0325] Production Example 3 (Synthesis of Polymer 3)

[0326] Wash and dry the stainless steel polymerization reactor with an inner volume of 5 liters, replace with dry nitrogen, and hexane (specific gravity 0.68g / cm 3 ) 2.55kg, 137g of 1,3-butadiene, 43g of styrene, 1.5ml of tetrahydrofuran, and 1.2ml of ethylene glycol diethyl ether were added to the polymerization reaction vessel. Next, 3.6 mmol of n-butyllithium was made into a n-hexane solution and put into a polymerization reaction vessel, and copolymerization of 1,3-butadiene and styrene was carried out for 2.5 hours. During the polymerization, the stirring speed was set at 130 rpm and the temperature in the polymerization reactor was 65° C., and the monomer was continuously supplied into the polymerization reactor. The supplied amount of 1,3-butadiene was 205 g, and the supplied amount of styrene was 65 g.

[0327] After the 2.5-hour polymerization, 2.8 mmol of bis(diethylamino)methylvinylsilane was made into a cyclo...

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Abstract

Provided is a rubber composition that can improve fuel efficiency, wet grip performance, and wear resistance in a well-balanced manner. Also provided is a pneumatic tire using the rubber composition. The disclosed rubber composition contains a rubber component and silica. In 100% by mass of the rubber component, the content of a conjugated diene polymer that includes a structural unit based on a conjugated diene and a structural unit represented by formula (I) is 5% by mass or greater, the conjugated diene polymer having at least one end thereof modified by a silicon compound that includes a group represented by formula (II) and / or a group represented by formula (III). The content of silica to 100 parts by mass of the rubber component is 5 to 150 parts by mass.

Description

technical field [0001] The present invention relates to a rubber composition and a pneumatic tire manufactured using the same. Background technique [0002] In recent years, due to increased interest in environmental issues, the demand for lower fuel consumption in automobiles has increased, and rubber compositions used in tires for automobiles are also required to be excellent in fuel efficiency. As the rubber composition for automobile tires, a rubber composition containing a conjugated diene polymer such as polybutadiene or a butadiene-styrene copolymer and a filler such as carbon black or silica can be used. [0003] As a method of improving fuel efficiency, for example, Patent Document 1 proposes a method of using a diene rubber modified with an amino group- and alkoxy group-containing organosilicon compound. However, in recent years, further improvement in fuel efficiency has been sought. In addition, wet grip performance and abrasion resistance are examples of perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00B60C1/00C08F8/42C08F236/04C08K3/36
CPCY02T10/862C08K3/36B60C1/0016C08L7/00C08C19/22C08C19/25C08C19/44C08L9/06C08L15/00C08F8/42B60C1/00
Inventor 西冈和幸日野原祐子马渕贵裕
Owner SUMITOMO RUBBER IND LTD
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