Conjugated diolefin (co)polymer rubber, process for producing (co)polymer rubber, rubber composition, composite, and tire

A conjugated diene and a manufacturing method of the technology are used in the fields of rubber-inorganic compound composites, conjugated diene-based polymeric rubbers, rubber compositions, tires, conjugated diene polymeric rubbers and their manufacturing fields, and can solve the problem of drug dispersion. The performance cannot be said to be sufficient, the affinity of rubber components is not found, and a large number of drugs are dispersed.

Inactive Publication Date: 2005-02-09
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, when an alkoxysilane is used as a coupling agent, there is a problem in that the obtained branched conjugated diene (co)polymer rubber has a problem that, with the passage of time, a high molecular weight component other than the target branch structure is generated, This has not occurred in previous coupling reactions with polyhalide silicon compounds
However, this masterbatch has insufficient fluidity, and the dispersibility of various drugs cannot be said to be sufficient. Moreover, it is difficult to disperse a large amount of drugs in the masterbatch. In addition, special skills are required in the preparation of the masterbatch, and there is a time-consuming problem in the preparation of the masterbatch. questions that take a long time
[0029] Furthermore, in the above prior art, no technical idea has been found to impart a specific functional group to the rubber component used in the master batch in order to improve the affinity with the inorganic filler.

Method used

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  • Conjugated diolefin (co)polymer rubber, process for producing (co)polymer rubber, rubber composition, composite, and tire
  • Conjugated diolefin (co)polymer rubber, process for producing (co)polymer rubber, rubber composition, composite, and tire
  • Conjugated diolefin (co)polymer rubber, process for producing (co)polymer rubber, rubber composition, composite, and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0356] Into an autoclave reactor with an internal volume of 5 liters replaced with nitrogen, 2,750 g of cyclohexane, 41.3 g of tetrahydrofuran, 125 g of styrene, and 365 g of 1,3-butadiene were charged. After adjusting the temperature of the reactor contents to 20° C., 325 mg of n-butyllithium (n-BuLi) was added to start polymerization. The polymerization was carried out under adiabatic conditions, reaching a maximum temperature of 85°C.

[0357] When the polymerization conversion rate reached 99%, 10 g of butadiene was added, and after making it polymerized for 5 minutes, 1560 mg of N,N-bis(trimethylsilyl)aminopropylmethyldimethoxysilane was added to carry out 15 minutes to react. After adding 2,6-di-tert-butyl-p-cresol to the polymer solution after the reaction, extender oil (manufactured by Fuji Industries Co., Ltd., trade name "Futsukoll Aromax (AROMAX)# 3", V.G.C=0.963) (hereinafter also referred to as "A-Oil") 187.5 g (37.5 parts relative to 100 parts of the rubber com...

Embodiment 2

[0359] In Example 1, the type and amount of additives were changed to 1.120 mg of 1-trimethylsilyl-2,2-dimethoxy-1-aza-2-silacyclopentane, and , was carried out in the same manner as in Example 1 to obtain a copolymer rubber P-2. Table 3 shows the composition and physical properties of the obtained copolymer rubber P-2.

Embodiment 3

[0361] In Example 1, except that the initiator was changed to piperidine and n-butyllithium which are secondary amines in order to introduce a tertiary amino group into the polymerization initiation terminal, the copolymerization rubber P-3 was obtained in the same manner as in Example 1. . Table 3 shows the composition and physical properties of the obtained copolymer rubber P-3.

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Abstract

Disclosed are a conjugated diolefin (co)polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound, wherein the (co) polymer rubber has a primary amino group and an alkoxysilyl group which are bonded to a (co)polymer chain; a process for producing the same; a rubber composition; a composite; and a tire. The (co) polymer rubber has satisfactory processability, and can give an automotive tire tread having a balance among wear resistance, failure characteristics, low hysteresis loss and wet-skid characteristics.

Description

technical field [0001] The present invention relates to a conjugated diene (co)polymerized rubber, its production method, rubber composition and tire. More specifically, the present invention relates to a conjugated diene-based (co-diene) capable of forming tire treads for automobiles, which has good processability and is well-balanced in wear resistance, fracture characteristics, low hysteresis loss, and wet skid resistance. ) Polymeric rubber, its production method, rubber composition and tire. [0002] In addition, the present invention relates to a conjugated diene (co)polymer rubber having improved cold flow and excellent balance of various properties, a method for producing the same, and the like. [0003] In addition, the present invention relates to a conjugated diene (co)polymerized rubber having a stable Mooney viscosity and little change in Mooney viscosity over time, a method for producing the rubber, a rubber composition, and a tire. [0004] Furthermore, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00C08C19/25C08C19/44C08F297/04C08K3/00C08K5/01C08L15/00C08L53/02
CPCC08K3/0033C08L53/02C08C19/25C08K5/01C08F297/04C08C19/44B60C1/0025B60C1/0016Y10S152/905C08L15/00B60C1/00C08K3/013Y02T10/86C08L2666/02
Inventor 突回惠介小林直一丰岛司但木稔弘谷口孝太
Owner JSR CORPORATIOON
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