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

一种共轭二烯、复合体的技术，应用在共轭二烯系均聚或共聚橡胶,共轭二烯均聚或共聚橡胶及其制造,橡胶组合物以及轮胎,橡胶·无机化合物复合体领域，能够解决流动性不足、药品分散性不能说充分、长时间等问题

Inactive Publication Date: 2006-06-21
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, when an alkoxysilane is used as a coupling agent, there is a problem in the obtained branched conjugated diene homopolymer or copolymer rubber: as time passes, 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
[0030] 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

[0357] 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 contents of the reactor to 20°C, 325 mg of n-butyllithium (n-BuLi) was added to start polymerization. The polymerization was carried out under adiabatic conditions, and the maximum temperature reached 85°C.

[0358] When the polymerization conversion rate reached 99%, 10 g of butadiene was added, and after 5 minutes of polymerization, 1560 mg of N,N-bis(trimethylsilyl)aminopropylmethyldimethoxysilane was added to proceed. Response in 15 minutes. After adding 2,6-di-tert-butyl-p-cresol to the polymer solution after the reaction, an extender oil (manufactured by Fuji Kosan Co., Ltd., trade name "フツコ一ル·アロマツクス(AROMAX)#" was added 3", VGC=0.963) (hereinafter also referred to as "A-Oil") 187.5 g (37.5 parts with respect to 100 parts of rubber compon...

Embodiment 2

[0360] 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. , The same procedure as in Example 1 was carried out to obtain copolymer rubber P-2. The composition and physical properties of the obtained copolymer rubber P-2 are shown in Table 3.

Embodiment 3

[0362] In Example 1, in order to introduce a tertiary amino group into the end of the polymerization start, the initiator was changed to piperidine and n-butyl lithium as the secondary amine, and the same procedure as in Example 1 was carried out to obtain copolymer rubber P-3. . The composition and physical properties of the obtained copolymer rubber P-3 are shown in Table 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

[0001] The application number of the present invention is 02821535.4, the application date is September 25, 2002, and the title of the invention is "Conjugated diene (co)polymer rubber, (co)polymer rubber manufacturing method, rubber composition, composite and tire" Application. Technical field [0002] The present invention relates to a conjugated diene homopolymer or copolymer rubber, a manufacturing method thereof, a rubber composition and a tire. In more detail, the present invention relates to a conjugated diene homopolymer capable of forming automobile tire treads, which has good processability and a balance of wear resistance, breaking characteristics, low hysteresis loss, and wet skid resistance. Or copolymer rubber, its manufacturing method, rubber composition and tire. [0003] In addition, the present invention also relates to a conjugated diene homopolymer or copolymer rubber with improved cold flow and excellent balance of various characteristics, and a method for prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F36/08B60C1/00C08C19/25C08C19/44C08F297/04C08K3/00C08K5/01C08L9/00C08L15/00C08L53/02
CPCB60C1/00B60C1/0016B60C1/0025C08C19/25C08C19/44C08F297/04C08K5/01C08L15/00C08L53/02Y10S152/905C08K3/013Y02T10/86C08L2666/02
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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