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Terpolymer rubber with medium/high side group content and preparation method and applications thereof

A vinyl aromatic hydrocarbon terpolymer and terpolymer technology, applied in the field of new terpolymer rubber, can solve problems such as strong, pungent odor, environmental protection and insufficient safety in the operating environment

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mentioned in US 5,448,003 is a method for synthesizing ternary copolymer rubber by anionic polymerization, which uses alkyl tetrahydrofurfuryl ether as a structure regulator to obtain a copolymer with high vinyl content, but this structure regulator It has a strong pungent smell, and there are deficiencies in environmental protection and operating environment safety

Method used

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  • Terpolymer rubber with medium/high side group content and preparation method and applications thereof
  • Terpolymer rubber with medium/high side group content and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]Under the protection of high-purity nitrogen, mixed solvent (mixture of cyclohexane and n-hexane: 82 / 18, mass ratio), styrene (ST), isoprene (IP), butadiene ( BD) and double tetrahydrofurfuryl propane (DTHFP) were added to a 5 liter stainless steel polymerization reactor with stirring. The temperature of the reactor was raised to 40°C by heating the jacket with hot water, the polymerization pressure was controlled between 0.1MPa-0.3MPa, and n-butyl lithium was added to initiate the reaction. After 60 minutes of polymerization, tin tetrachloride was added for coupling for 30 minutes. Then add isopropanol which is 1.2 times (molar ratio) of n-butyllithium to terminate the reaction, and condense with water vapor to obtain a random ternary copolymer rubber product. The microstructure and properties of the product are shown in Table 1.

Embodiment 2-4

[0057] According to the procedure described in Example 1, the difference is that the polymerization initiation temperature is 50°C, 60°C, and 70°C, respectively, and the microstructure and various properties of the product are shown in Table 1.

[0058] Table 1 Product Microstructure and Various Properties

[0059] project Example 1 Example 2 Example 3 Example 4 Solvent / g 2288 2288 2288 2288 ST / g 62.4 62.4 62.4 62.4 BD / g 124.8 124.8 187.2 187.2 IP / g 124.8 124.8 62.4 62.4 DTHFP / Li (molar ratio) 0.5 0.5 0.5 0.5 Polymerization initiation temperature / °C 40 50 60 70 Molecular weight, M 峰值 (Ten thousand) 18.2 21.9 16.8 15.8 Molecular weight distribution, MWD 1.533 1.596 1.572 1.651 Coupling efficiency / % 63.7 62.0 61.5 42.0 Gum Mooney 64 70 53 43 Compound Mooney Viscosity 89 102 94 9...

Embodiment 5-11

[0061] Carry out according to the procedure described in Example 2, the difference is to adjust the structure regulator dose added to the polymerization system, so that the proportioning ratio with organic lithium becomes 0.1, 0.2, 0.4, 0.6, 0.7, 1.0, 2.0, the product The microstructure and various properties are shown in Table 2 below.

[0062] Table 2 Product Microstructure and Various Properties

[0063] project Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Solvent / g 2288 2288 2288 2288 2288 2288 2288 ST / g 62.4 62.4 62.4 62.4 62.4 62.4 62.4 BD / g 124.8 124.8 124.8 124.8 124.8 124.8 124.8 IP / g 124.8 124.8 124.8 124.8 124.8 124.8 124.8 DTHFP / Li (molar ratio) 0.1 0.2 0.4 0.6 0.7 1.0 2.0 Polymerization initiation temperature ℃ 50 50 50 50 50 50 50 Molecular weight, M 峰值 (...

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Abstract

The invention discloses terpolymer rubber with medium / high side group content and a preparation method and applications thereof. The invention relates to a method which uses a bistetrahydrofuran compound as the structural modifier to synthesize monovinylarene / conjugated diene 1 / conjugated diene 2 terpolymer rubber through solution polymerization, the monovinylarene / conjugated diene 1 / conjugated diene 2 terpolymer rubber synthesized by the method and products based on the copolymer rubber, such as tires. The copolymer rubber synthesized by the method has good wet-skid resistance and low rolling resistance.

Description

field of invention [0001] The invention relates to a terpolymer rubber with medium and high side group content, in particular to a terpolymer of conjugated diene 1, conjugated diene 2 and monovinylarene and a preparation method thereof. More specifically, the present invention relates to a method for preparing conjugated diene 1 / conjugated diene 2 / monovinylarene ternary copolymer rubber by using ditetrahydrofuran compound as a structural regulator and a novel ternary copolymer prepared by this method Copolymerized rubber and articles based on said terpolymerized rubber, such as tires and the like. Background of the invention [0002] At present, the rubber materials suitable for automobile tire tread rubber must not only have good wear resistance, but also have high wet skid resistance and low rolling resistance, so as to meet the needs of safe driving and energy saving. However, the requirements of high wet skid resistance and low rolling resistance are contradictory, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/10C08F2/38C08F2/06B60C1/00
CPCY02T10/86
Inventor 康新贺王妮妮刘辉孙文娟于国柱徐林李传清
Owner CHINA PETROLEUM & CHEM CORP
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