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Conjugated diene rubber modified with polar alkoxysilane, method and composition thereof

A conjugated diene rubber and conjugated diene monomer technology, which is applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., can solve the problems of complex and difficult to implement the preparation method of modified conjugated diene rubber.

Active Publication Date: 2013-06-19
TSRC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the preparation method of the modified conjugated diene rubber synthesized by the above-mentioned prior art is mostly difficult and complicated and not easy to implement, so the industry still needs a novel conjugated diene rubber modification technology to solve the problems caused by the prior art

Method used

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  • Conjugated diene rubber modified with polar alkoxysilane, method and composition thereof
  • Conjugated diene rubber modified with polar alkoxysilane, method and composition thereof
  • Conjugated diene rubber modified with polar alkoxysilane, method and composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1 (oxygen-containing group)

[0048] Provide an autoclave reactor with an initial capacity of about 5 liters and fill it with nitrogen. 2750 grams of cyclohexane, 82.5 grams of tetrahydrofuran, 100 grams of styrene and 390 grams of 1,3-butadiene were charged into the autoclave reactor. When the temperature of the contents of the reactor reached 30°C, 325 mg (5.03 mmol) of n-butyl lithium was added to initiate the polymerization reaction. The polymerization reaction proceeds under adiabatic state. When the polymerization reaction is almost complete, 10 g of 1,3-butadiene is added and the polymerization reaction is carried out for about 5 minutes. Then 2.82g (10.06mmol) of vinyl tris(2-methoxyethoxy)silane (hereinafter referred to as M1) was added. The modification reaction takes about 15 minutes. Next, 2,6-di-tert-butyl-p-cresol (2,6-di-tert-butyl-p-cresol) was added to the polymer solution to terminate the reaction. After removing the solvent from the polymer ...

Embodiment 2 to 5

[0049] Examples 2 to 5 (oxygen-containing groups)

[0050] The steps of Example 2 to Example 5 can refer to the steps of Example 1, which all use the same solvent and reactants, and the difference in reaction conditions is only the content of each reactant. The reaction conditions of each example, such as the molar ratio of modifier (siloxane) and conjugated diene rubber-lithium, initial number average molecular weight (Mi), and various properties of the resulting product are listed in detail in the appendix in FIG. 1.

Embodiment 6

[0051] Example 6 (nitrogen-containing group)

[0052] Provide an autoclave reactor with an initial capacity of about 5 liters and fill it with nitrogen. 2750 grams of cyclohexane, 82.5 grams of tetrahydrofuran, 100 grams of styrene and 390 grams of 1,3-butadiene were charged into the autoclave reactor. When the temperature of the contents of the reactor reached 30°C, 325 mg (5.03 mmol) of n-butyl lithium was added to initiate the polymerization reaction. The polymerization reaction proceeds under adiabatic state. When the polymerization reaction is almost complete, 10 g of 1,3-butadiene is added and the polymerization reaction is carried out for about 5 minutes. Then, 5.03 mmol of Vinyl tris(methylethylketoxime)silane (hereinafter referred to as M2) was added. The modification reaction takes about 15 minutes. Next, 2,6-di-tert-butyl-p-cresol (2,6-di-tert-butyl-p-cresol) was added to the polymer solution to terminate the reaction. After removing the solvent from the polymer s...

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Abstract

A modified conjugated diene rubber is disclosed. A method for producing the modified conjugated diene rubber includes providing an alkali metal ion-containing conjugated diene rubber; and reacting the alkali metal ion-containing conjugated diene rubber with an alkoxysilane to generate the modified conjugated diene rubber, the alkoxysilane being of the structural formula: wherein R 1 , R 2 , R 3 are each independently selected from a group consisting of oxygen-containing C 2 -C 12 group and nitrogen-containing C 1 -C 12 group, the oxygen-containing C 2 -C 12 group has a carbon atom directly connected to oxygen atom of the alkoxysilane, the nitrogen-containing C 1 -C 12 group has a nitrogen atom directly connected to oxygen atom of the alkoxysilane, and R 4 is selected from a group consisting of C 1 -C 12 of alkyl, alkenyl, aryl, and alkoxy.

Description

Technical field [0001] The invention relates to a conjugated diene rubber, in particular to a conjugated diene rubber modified with siloxane. Background technique [0002] Solution styrene butadiene rubber (SSBR) is composed of butadiene and styrene units. First, Phillips Company of the United States proposed a batch preparation method and Firestone Company proposed a continuous preparation method, and took the lead in realizing industrial production. Since solution styrene butadiene rubber has better mechanical properties and rolling resistance than emulsion styrene butadiene rubber (ESBR), it can be widely used in the automotive industry and other rubber products. [0003] With the recent reduction in the fuel consumption requirements of automobiles, the demand for the characteristics of rubber materials used in tires has also increased. Conjugated diene rubber has low rolling resistance, excellent abrasion resistance, and produces more excellent handling stability due to wet s...

Claims

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Application Information

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IPC IPC(8): C08C19/25C08L15/00C08K3/36
CPCY02T10/86
Inventor 谢其诚林福蔡奇达林晖凯林柏翰
Owner TSRC CORP
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