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Partially hydrogenated terpolymer rubber with star block structure and its preparation method and application

A technology of terpolymerized rubber and terpolymer, which is applied in vehicle parts, tire parts, transportation and packaging, etc. It can solve the problems of safety restrictions, limited ability to adjust polymer structure, and small hysteresis loss at low temperature. Improvement of rolling resistance performance, excellent wet skid resistance, effect of amount reduction

Active Publication Date: 2018-02-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the polymer has only two structural units of styrene and butadiene, and no isoprene structural unit, the ability to adjust the structure of the polymer is limited, resulting in an increase in the hysteresis loss at low temperature compared with that before hydrogenation. The hysteresis loss at low temperature is still small, so the safety of this polymer when used as tire tread compound is still limited to a certain extent

Method used

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  • Partially hydrogenated terpolymer rubber with star block structure and its preparation method and application
  • Partially hydrogenated terpolymer rubber with star block structure and its preparation method and application
  • Partially hydrogenated terpolymer rubber with star block structure and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] In a 5-liter stainless steel stirred tank under the protection of high-purity nitrogen, add 2230g cyclohexane, 62.5g styrene, 125g isoprene and 112.5g butadiene, then add 1.45mmol tetrahydrofurfuryl alcohol ethyl ether and 0.37mmol deca Sodium dialkylbenzenesulfonate, add 3.69mmol n-butyllithium at 50°C to initiate the reaction. After the polymerization is complete, add 12.5g of butadiene to continue the polymerization at 91°C. 0.4 mmol of tin tetrachloride was added, and after 70 minutes of reaction, 0.5 g of isopropanol was added to terminate the reaction.

[0103] In the stirring process, add a hydrogenation catalyst to the polymer solution to be hydrogenated after the above-mentioned termination, then feed hydrogen to carry out the hydrogenation reaction, the hydrogenation catalyst is a mixture of nickel naphthenate and triisobutylaluminum, wherein Al / The Ni molar ratio is 4:1, the catalyst dosage is 0.03gNi / 100g polymer to be hydrogenated, the reaction temperature...

Embodiment 2

[0106] In a 5-liter stainless steel stirred tank under the protection of high-purity nitrogen, add 2290g cyclohexane, 62.5g styrene, 125g isoprene and 75g butadiene, then add 1.35mmol tetrahydrofurfuryl alcohol ethyl ether and 0.34mol dodeca Sodium alkylbenzene sulfonate, add 3.42mmol n-butyllithium at 50°C to initiate the reaction, after the polymerization is completed, add 50g of butadiene to continue the polymerization at 87°C, react for 20 minutes and then add 0.34mmol of tin tetrachloride, after 70 minutes of reaction, 0.5g of isopropanol was added to terminate the reaction.

[0107] The process conditions for hydrogenation and hydrogenation catalyst removal are the same as in Example 1. Add 0.62g Irganox1520 to the obtained glue, coagulate with hot water, and dry with hot rollers. Test its structure and performance. The results are shown in Table 1 and Table 2. Show.

Embodiment 3

[0109] In a 5-liter stainless steel stirred tank under the protection of high-purity nitrogen, add 2290g cyclohexane, 62.5g styrene, 125g isoprene and 62.5g butadiene, then add 1.48mmol tetrahydrofurfuryl alcohol ethyl ether and 0.37mmol deca Sodium dialkylbenzene sulfonate, add 3.76mmol n-butyl lithium to initiate the reaction at 50°C, after the polymerization is completed, add 62.5g of butadiene to continue the polymerization at 77.2°C, react for 20 minutes and then return to the kettle 0.38 mmol of tin tetrachloride was added, and after 70 minutes of reaction, 0.5 g of isopropanol was added to terminate the reaction.

[0110] The process conditions for hydrogenation and hydrogenation catalyst removal are the same as in Example 1. Add 0.62g Irganox1520 to the obtained glue, coagulate with hot water, and dry with hot rollers. Test its structure and performance. The results are shown in Table 1 and Table 2. Show.

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Abstract

The invention relates to a partially hydrogenated styrene-butadiene-isoprene ternary copolymerized rubber with a star block structure, a preparation method and application thereof. The ternary copolymerized rubber contains copolymer rubber of a ternary copolymer with a structure of (SIB-PA)n-X before hydrogenation, wherein the SIB is a random copolymerized segment of styrene, butadiene and isoprene, the PA is a butadiene homopolymerized segment or isoprene homopolymerized segment, X is a coupling agent residue, and n=2-4. Through selective partial hydrogenation of the butadiene structural unit and isoprene structural unit in the ternary copolymerized rubber, the partially hydrogenated ternary copolymerized rubber can have very good low rolling resistance performance, also has excellent wet skid resistance, good ageing resistance and ideal comprehensive physical and mechanical properties, and can be widely used in the field of rubber products, especially suitable for the tire tread rubber.

Description

technical field [0001] The invention relates to a partially hydrogenated ternary copolymer rubber with a star-shaped block structure, a method for preparing the partially hydrogenated ternary copolymer rubber with a star-shaped block structure, and the partially hydrogenated terpolymer rubber with a star-shaped block structure prepared by the method. A block-structured terpolymerized rubber and an application of the partially hydrogenated star-shaped block-structured terpolymerized rubber in tire tread rubber. Background technique [0002] With the development of the modern automobile industry, the requirements for tire performance are getting higher and higher, and high speed, safety, comfort, and energy saving have become the basic requirements. abrasiveness etc. For rubber materials, on the one hand, high wet skid resistance is required, on the other hand, low rolling resistance is required, and good wear resistance is also required, and the improvement of each performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/04C08F8/42C08F297/04C08F2/06C08F2/38C08F4/48C08L53/02C08K13/02C08K3/04C08K3/06C08K5/09C08K3/22B60C1/00
CPCY02T10/86
Inventor 贺小进徐林康新贺韩书亮王妮妮刘辉石建文
Owner CHINA PETROLEUM & CHEM CORP
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