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Alkoxysilyl group-containing azo compound and rubber composition using the same

A technology of alkoxysilyl and azo compounds, which is applied in the fields of compounds of group 4/14 elements of the periodic table, organic chemistry, chemical instruments and methods, etc., and can solve the problem of limited synthesis conditions, low yield, and inability to and other problems, to achieve the effect of improving heat generation performance and reducing heat generation

Inactive Publication Date: 2014-06-18
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, isocyanate groups and metal alkoxides used in the production methods of the above-mentioned conventional techniques have high reactivity to water, and thus there are problems that the synthesis conditions are strictly limited in any production method and the yield is low
Based on the above facts, azo compounds containing alkoxysilyl groups cannot be practically used as silane coupling agents

Method used

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  • Alkoxysilyl group-containing azo compound and rubber composition using the same
  • Alkoxysilyl group-containing azo compound and rubber composition using the same
  • Alkoxysilyl group-containing azo compound and rubber composition using the same

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[0036] The amounts of compound (2) and compound (3) used in the production method of the present invention are adjusted so that compound (3) is introduced at both ends of compound (2). Specifically, the ratio of the thiol in the compound (3) is preferably 1 mol or higher, and more preferably 1 to 1.2 mol, per 1 mol of the alkenyl group in the compound (2).

[0037] In the thiol-ene reaction used in the production method of the present invention, a radical generator as a reaction catalyst is not always necessary. However, when a radical generator is used, the reaction can proceed more easily. There are no particular restrictions on the kind of radical generator. The 10-hour half-life temperature (T10) is preferably 5°C or more lower than the 10-hour half-life temperature of the compound (2) and the expected azo compound (1), more preferably 15°C or more, and particularly preferably 30-70°C lower .

[0038] Specific examples of suitable free radical generators include azo compound...

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Abstract

An alkoxysilyl group-containing azo compound represented by the following formula (I), a method for easily obtaining the alkoxysilyl group-containing azo compound, and a rubber composition having improved heat build-up characteristic and the like obtained using the azo compound are provided. The alkoxysilyl group-containing azo compound is preferably obtained by reacting a compound represented by the following formula (2) and a compound represented by the following formula (3); wherein R1 and R2 represent an alkyl group having from 1 to 3 carbon atoms, R3 and R8 represent an alkylene group having from 1 to 3 carbon atoms, R4, R5, R6 and R7 represent hydrogen or an alkyl group having from 1 to 3 carbon atoms, n is an integer of from 1 to 3, and m is an integer of from 1 to 5.

Description

Technical field [0001] The present invention relates to a novel azo compound containing an alkoxysilyl group, which can be used as a radical generator that is reactive with silicon dioxide and metal oxides, and relates to the preparation of the azo compound. The compound method, a rubber composition using the azo compound, and a pneumatic tire using the rubber composition. Background technique [0002] When silica is used in the rubber composition, various sulfur-containing silane coupling agents are used in order to improve the dispersibility of silica. The performance of rubber is affected by the added silane coupling agent. Therefore, for example, a silane coupling agent capable of improving the less heat-generating properties required in tires, for example, is required. [0003] The polymer having the functional group introduced into the molecular terminal is useful because the functional group can be used for the crosslinking reaction of the polymer and can be used to stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08F4/72C08F220/14C08L9/06C08L7/00C08K13/02C08K5/548C08K3/04C08K3/06C08K3/22C08K3/36C08K5/09B60C1/00
CPCC08K5/548B60C1/0016B60C1/0025C08L21/00
Inventor 菱川靖浩
Owner TOYO TIRE & RUBBER CO LTD
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