Continuous polymerization method for preparing rare earth butadiene rubber

A technology of rare earth butadiene and polymerization method, which is applied in the field of rubber preparation to achieve the effects of good fluidity, high catalytic activity and good effect

Active Publication Date: 2017-12-29
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, the report on high Mooney rubber is the application number 200910218093.4 of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. The patent mentions the catalyst and preparation method of rare earth isoprene rubber with a Mooney viscosity of 50-105 and the method for isoprene polymerization. The polymerized monomer used in this method is isoprene, and the product is isoprene rubber. In addition, the main catalyst used in this method is trifluoromethanesulfonic acid rare earth complex, w

Method used

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  • Continuous polymerization method for preparing rare earth butadiene rubber
  • Continuous polymerization method for preparing rare earth butadiene rubber
  • Continuous polymerization method for preparing rare earth butadiene rubber

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Embodiment 1

[0029] (1) The catalyst for the preparation of high Mooney rare earth butadiene rubber with narrow molecular weight distribution is neodymium phosphate (wherein the phosphate is bis(2-ethylhexyl), diisobutyl aluminum hydride and monochloro / dichloroethylaluminum, butadiene Diene, molecular weight regulator triisobutylaluminum (triisobutylaluminum / diisobutylaluminum hydride 50:1). The diisobutylaluminum hydride, monochloro / dichloroethylaluminum, butadiene The molar ratio with neodymium phosphate is 5:2:2:1 respectively.

[0030] The continuous polymerization method of the narrow molecular weight distribution high Mooney rare earth butadiene rubber provided by the invention is as follows:

[0031] Before start-up, prepare the device before start-up, introduce public works (water, electricity, gas, etc.), then pressurize the air-tightness test on the equipment and pipelines, and purge with nitrogen to ensure that the device does not leak and is in an oxygen-free state. Collect C6...

Embodiment 2

[0035] (1) The catalyst for preparing high Mooney rare earth butadiene rubber with narrow molecular weight distribution is neodymium phosphate (wherein the phosphate is 2-ethylhexyl phosphate 2-ethylhexyl ester), diisobutyl aluminum hydride and monochloro / dichloro Ethylaluminum, butadiene, molecular weight modifier triisobutylaluminum (triisobutylaluminum / diisobutylaluminum hydride 50:50). The mol ratio of described diisobutyl aluminum hydride and neodymium phosphate is 15:1; :1.

[0036] The continuous polymerization method of the narrow molecular weight distribution high Mooney rare earth butadiene rubber provided by the invention is as follows:

[0037] Before start-up, prepare the device before start-up, introduce public works (water, electricity, gas, etc.), then pressurize the air-tightness test on the equipment and pipelines, and purge with nitrogen to ensure that the device does not leak and is in an oxygen-free state. Collect C6 solvent oil, raw material butadiene a...

Embodiment 3

[0041] (1) The catalysts for preparing high Mooney rare earth butadiene rubber with narrow molecular weight distribution are neodymium phosphate (wherein the phosphoric acid ester is dimethyl heptyl methyl phosphate), diisobutyl aluminum hydride and monochloro / dichloroethyl aluminum, butadiene Diene, molecular weight regulator triisobutylaluminum (triisobutylaluminum / diisobutylaluminum hydride 99:1). The mol ratio of described diisobutyl aluminum hydride and neodymium phosphate is 25:1; :1.

[0042] The continuous polymerization method of the narrow molecular weight distribution high Mooney rare earth butadiene rubber provided by the invention is as follows:

[0043] Before start-up, prepare the device before start-up, introduce public works (water, electricity, gas, etc.), then pressurize the air-tightness test on the equipment and pipelines, and purge with nitrogen to ensure that the device does not leak and is in an oxygen-free state. Collect solvent oil, raw material but...

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Abstract

The invention relates to a continuous polymerization method for synthesizing high Mooney rare earth butadiene rubber with narrow molecular weight distribution. A catalyst used by the method is prepared from five substances: a phosphoric acid rare earth compound, alkadiene, hydrogenated aluminum alkyl, an organic chloride and aluminum alkyl. The ageing mode of the catalyst is continuous ageing of the five substances according to a certain adding sequence and standing time, and the aged catalyst enters a polymerization kettle for continuous butadiene polymerization to directly synthesize the rare earth butadiene rubber in the synthesizing process of the rare earth butadiene rubber, wherein the Mooney value is 55-100, the number-average molecular weight is greater than or equal to 180 thousand and the molecular weight distribution is 1.3-2.5. A product vulcanized rubber is excellent in performance and processing applicability, thereby providing a technical support for applying the rare earth butadiene rubber product in preparing a high performance tire meeting the EU tyre label law.

Description

technical field [0001] The invention relates to the field of rubber preparation, in particular to a continuous polymerization method for preparing rare earth butadiene rubber. Background technique [0002] After the implementation of EU tire labeling regulations, high-performance tires and green tires with "high speed, environmental protection, safety and energy saving" have attracted worldwide attention. High-performance tires require rubber raw materials not only to meet the requirements of the tire manufacturing process, but also to meet the requirements of high speed, safety, energy saving and environmental protection. From the analysis of the existing butadiene rubber industrial products, rare earth butadiene rubber is the best rubber to meet the requirements. Rare earth butadiene rubber has the characteristics of high molecular chain structure regularity, low long chain branching degree, adjustable molecular weight distribution, good processability and mechanical prope...

Claims

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Application Information

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IPC IPC(8): C08F136/06C08F4/54
CPCC08F136/06C08F4/545
Inventor 周鹏松张志强齐晓梅刘泳涛张凯陆彪谷素艳
Owner PETROCHINA CO LTD
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