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

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

Active Publication Date: 2012-12-19
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, the mixed solvent (mixture of cyclohexane and n-hexane: 82 / 18, mass ratio), styrene (ST), isoprene (IP), butadiene ( BD) and ditetrahydrofurfurylpropane (DTHFP) were added to a 5-liter stainless steel polymerization reactor with stirring. The reaction kettle was heated to 40°C by heating the jacket with hot water, the polymerization pressure was controlled between 0.1 MPa and 0.3 MPa, 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, isopropanol in an amount of 1.2 times (molar ratio) of n-butyl lithium is added to terminate the reaction, and after condensation with water vapor, a random ternary copolymer rubber product is obtained. The product microstructure and various properties are shown in Table 1.

Embodiment 2-4

[0057] It was carried out according to the procedure described in Example 1, with the difference that the polymerization initiation temperature was 50°C, 60°C, and 70°C, respectively. The product microstructure and various properties are shown in Table 1.

[0058] Table 1 Product microstructure and various properties

[0059] Item

Embodiment 5-11

[0061] According to the procedure described in Example 2, the difference is that the amount of structure adjustment added to the polymerization system is adjusted so that the ratio of it to the organic lithium becomes 0.1, 0.2, 0.4, 0.6, 0.7, 1.0, 2.0, and the product The microstructure and various properties are shown in Table 2 below.

[0062] Table 2 Product microstructure and various properties

[0063] Item

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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

Invention field [0001] The present invention relates to a ternary copolymer rubber with medium and high side group content, in particular to a terpolymer of conjugated diene 1, conjugated diene 2 and monovinyl aromatic hydrocarbon and a preparation method thereof. More specifically, the present invention relates to a method for preparing conjugated diene 1 / conjugated diene 2 / monovinyl aromatic hydrocarbon ternary copolymer rubber by using ditetrahydrofuran compound as a structure modifier and a novel ternary copolymer prepared by this method. Copolymer rubber and products based on the ternary copolymer rubber, such as tires. Background of the invention [0002] Current 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 requirements of safe driving and energy saving. However, the requirements of high wet skid resistance and low rolling resistan...

Claims

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Application Information

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Patent Type & Authority Patents(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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