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Ternary catalysis system used for selective hydrogenation of conjugated diene containing polymer and application thereof

A technology of conjugated diolefins and catalytic systems, applied in organic compound/hydride/coordination complex catalysts, catalytic reactions, physical/chemical process catalysts, etc., can solve problems such as large temperature fluctuations and difficult reaction control, Achieve the effects of improving hydrogenation efficiency, stable hydrogenation activity, and mild reaction

Inactive Publication Date: 2017-04-19
山东聚圣科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned patents have their own characteristics, they also have shortcomings. The temperature fluctuates greatly during the initial hydrogenation process, making it difficult to control the reaction.

Method used

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  • Ternary catalysis system used for selective hydrogenation of conjugated diene containing polymer and application thereof
  • Ternary catalysis system used for selective hydrogenation of conjugated diene containing polymer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 45 mL of 3 g / L nickel naphthenate solution in cyclohexane (0.0023 mol in terms of Ni molar content) to the three-necked flask replaced by high-purity nitrogen, and add 0.108 g of tetramethylethylenediamine (calculated in terms of N molar content as 0.0018mol), react at 55°C for 15min to form a complex, then add 1.36g of triisobutylaluminum (0.0069mol in terms of Al molar content), age at 60°C for 30min, then add to 300g of SEPS base glue In the process, react for 120min under a hydrogen pressure of 2.5MPa, and the reaction temperature fluctuates in the range of 65-90°C. The hydrogenated glue solution is released from the bottom of the hydrogenation kettle and the hydrogenation degree is 99.5% by iodometric method.

Embodiment 2

[0026] Add 45mL of 3g / L nickel naphthenate cyclohexane solution (0.0023mol in terms of Ni molar content) into the three-necked flask replaced by high-purity nitrogen, and add 0.135g of tetramethylethylenediamine (calculated in N molar content 0.0023mol), reacted at 55°C for 15min to form a complex, then added 1.36g of triisobutylaluminum (0.0069mol in terms of Al molar content), aged at 60°C for 30min and added to 300g of SEPS base rubber In the liquid, react under a hydrogen pressure of 2.5MPa for 120min, and the reaction temperature fluctuates in the range of 65-90°C. The hydrogenated glue solution is released from the bottom of the hydrogenation kettle, and the hydrogenation degree is 98.7% by iodometric method.

Embodiment 3

[0028] Add 45 mL of 3 g / L nickel naphthenate solution in cyclohexane (0.0023 mol in terms of Ni mole content) to the three-necked flask replaced by high-purity nitrogen, and add 0.108 g of tetramethylethylenediamine (in terms of N mole content 0.0018mol), react at 65°C for 5min to form a complex, then add 1.81g of triisobutylaluminum (0.0092mol in terms of Al molar content), age at 60°C for 30min, then add to 300g of SEPS base rubber In the liquid, react under the hydrogen pressure of 2.5MPa for 120min, and the reaction temperature fluctuates in the range of 65-90°C. The hydrogenated glue solution is released from the bottom of the hydrogenation kettle, and the hydrogenation degree is 97.5% by iodometric method.

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Abstract

The invention provides a ternary catalysis system used for selective hydrogenation of a conjugated diene containing polymer. The ternary catalysis system comprises organic acid nickel, aluminum alkyl and an amino compound. The amino compound in the catalysis system and an organic acid nickel compound firstly form a complex product, and then the complex product and the aluminum alkyl are subjected to ageing processing, so that an optimal quantitative proportion relationship between Ni+ and Ni0 is achieved, and the hydrogenation activity of the catalyst is more stable. By adoption of the ternary catalysis system, the reaction of the conjugated diene containing polymer in the hydrogenation process becomes milder, and the hydrogenation efficiency and the hydrogenation degree of the polymer are finally improved.

Description

technical field [0001] The invention belongs to the field of macromolecule polymerization, in particular to a three-way catalytic system for selective hydrogenation of conjugated diene-containing polymers. [0002] technical background [0003] During the use of conjugated diene polymers, due to the active chemical properties of the unsaturated double bonds in the conjugated diene block, their heat resistance, oxygen stability and aging resistance are low, resulting in short service life. To solve this problem, the olefinic unsaturated bonds of the polymer are usually hydrogenated, thereby greatly increasing its stability and making it have excellent chemical properties such as heat resistance, weather resistance, and acid and alkali resistance. [0004] At present, the selective hydrogenation of conjugated diene-containing polymers mainly adopts a binary catalytic system, mainly using organic acid salts as the main catalyst, and alkyl aluminum compounds as co-catalysts, such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C08F8/04C08F297/04
CPCB01J31/1691B01J31/2226B01J2231/645B01J2531/0213B01J2531/847C08F8/04C08F2810/50C08F297/04
Inventor 闫邦锋郭方飞郑学峰张康淳月振佀庆法郭正晖
Owner 山东聚圣科技有限公司
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