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Method for producing modified conjugated diene rubber

一种共轭二烯、橡胶的技术，应用在橡胶交联物,橡胶交联物的改性共轭二烯类橡胶领域，能够解决低发热性、耐磨损性差等问题，达到加工性优异的效果

Inactive Publication Date: 2014-08-27
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the technology of the above-mentioned Patent Document 1, although the affinity between rubber and silica is improved, the low heat generation property is insufficient, and there is also a problem of poor wear resistance. Therefore, when used as a rubber for tires, , may not be able to meet the required characteristics

Method used

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  • Method for producing modified conjugated diene rubber
  • Method for producing modified conjugated diene rubber
  • Method for producing modified conjugated diene rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0125] The present invention will be further described below based on detailed examples, but the present invention is not limited to these examples. It should be noted that, hereinafter, unless otherwise specified, "%" is based on weight. In addition, tests and evaluations are as follows.

[0126] (molecular weight of rubber)

[0127] The molecular weight of the rubber was determined as a polystyrene-equivalent molecular weight by gel permeation chromatography. Specific measurement conditions are as follows.

[0128] Measuring device: high performance liquid chromatography (manufactured by Tosoh Corporation, trade name "HLC-8220")

[0129] Column: Two columns of the trade name "GMH-HR-H" manufactured by Tosoh Corporation were used in series

[0130] Detector: differential refractometer (manufactured by Tosoh Corporation, trade name "RI-8220")

[0131] Eluent: tetrahydrofuran

[0132] Column temperature: 40°C.

[0133] (branching degree of rubber)

[0134] The d...

preparation example 1

[0156] (Preparation example 1: Preparation of polymerization initiator 1 (lithiation of 1,3,5-trimethylbenzene))

[0157] Under a nitrogen atmosphere, 16 parts of cyclohexane, 0.841 parts of 1,3,5-trimethylbenzene, and 0.813 parts of tetramethylethylenediamine were added to a glass reaction vessel. Next, 1.345 parts of n-butyllithium (0.3 mol of the above-mentioned tetramethylethylenediamine per 1 mol of n-butyllithium) was added with stirring, and reacted at a reaction temperature of 60°C while stirring. On the 2nd, 18.999 parts of a solution of the polymerization initiator 1 (lithiated 1,3,5-trimethylbenzene) was obtained. Next, in order to measure the lithiation rate of the lithiated 1,3,5-trimethylbenzene obtained by the reaction, several drops of the obtained reaction liquid, reacted for 30 minutes. After extracting and washing the catalyst residue with tap water, the solvent was distilled off to obtain a yellow oily liquid.

[0158] Then, the yellow oily liquid was su...

Embodiment 1

[0166] (Preparation of Modified Styrene Butadiene Rubber 1)

[0167] Under a nitrogen atmosphere, after putting 800 parts of cyclohexane, 94.8 parts of 1,3-butadiene, 25.2 parts of styrene and 0.232 parts of tetramethylethylenediamine into the autoclave, add 0.925 parts of The solution of the polymerization initiator 1 obtained in Preparation Example 1 (lithiated 1,3,5-trimethylbenzene) (the amount of tetramethylethylenediamine present in the reaction system is relative to every 1 mole for 1,3 , Lithiated n-butyllithium of 5-trimethylbenzene is 2.0 moles), and the polymerization starts at 60°C. The polymerization reaction was continued for 60 minutes, and after confirming that the polymerization conversion rate reached the range of 95% to 100%, 0.265 parts (1.0 mole amount relative to the Li1 mole contained in the polymerization initiator 1) of trichloride as a modifier were added. (Trimethylsilyloxy) silane (in the above general formula (5), j, k, m, n=0, R 1 = Cl, R 10 ~R...

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Abstract

Provided is a method for producing a modified conjugated diene rubber, which is provided with a step wherein monomers including at least a conjugated diene compound are polymerized using, as a polymerization initiator, an alkali metallized aromatic compound that has three or more carbon atoms directly bonded to an alkali metal atom and an aromatic ring in each molecule, and then an active terminal of the thus-obtained polymer is reacted with a compound represented by general formula (I). (In general formula (I), one of R1 and R10-R18 represents an atom or a reactive group that is reactive with an active terminal of the polymer or a hydrocarbon group that contains the atom or a reactive group; each of the rest of R1 and R10-R18 and R2-R9 independently represents a hydrogen atom, an alkyl group or an aryl group; and each of j, k, m and n represents an integer of 0-100.)

Description

technical field [0001] The present invention relates to a method for producing a modified conjugated diene rubber, and more specifically, to a modified conjugated Diene rubber method. In addition, the present invention also relates to the modified conjugated diene rubber obtained by the production method, the rubber composition containing the modified conjugated diene rubber, and the cross-linked rubber. Background technique [0002] In recent years, due to environmental problems and resource problems, low heat generation properties have been strongly demanded for automobile tires, and excellent wear resistance has also been demanded from the viewpoint of durability. Since tires obtained from rubber compositions blended with silica are excellent in low heat build-up properties compared with commonly used tires blended with carbon black, tires with low combustion consumption can be produced by using them. [0003] In such a rubber composition, in order to increase the affin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/25C08F4/46C08G81/02C08K3/36C08L15/00
CPCC08L15/00C08K3/36C08F4/46C08C19/25C08F8/42C08G81/02C08F36/06C08C19/44C08F36/04C08F4/466C08F2810/40
Inventor 杉村岳史伊东和哉
Owner ZEON CORP
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