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Novel method and equipment for improving dispersity of accelrator TMTD

An accelerator and dispersibility technology, applied in the direction of organic chemistry, etc., can solve the problems of unqualified rubber production process, uneven product quality, affecting product shelf life, etc., to facilitate industrial operation, reduce static electricity, and change physical and chemical properties. Effect

Pending Publication Date: 2021-04-13
SHANDONG SUNSINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the industrially synthesized accelerator TMTD, in the oxidation kettle after oxidation, the specific gravity of the material is less than 1, so the product floats or is suspended on the liquid. During the production process, the uneven stirring leads to product quality problems. During the material transfer process, it takes a long time and is difficult to transfer materials
After being packaged into a finished product, the electrostatic phenomenon in the product is very serious, that is, the dispersion of the product is very poor
During the storage process, the product is easy to cluster and agglomerate due to static electricity, which seriously affects the storage period of the product
At the same time, because of the problem of small dispersion, many downstream rubber manufacturers, when synthesizing rubber, TMTD as an additive, cannot be well integrated into the rubber, resulting in many spots, making the rubber production process unqualified.
Moreover, in the process of using pre-dispersion in TMTD products, the operation is difficult and it is difficult to discharge

Method used

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  • Novel method and equipment for improving dispersity of accelrator TMTD
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  • Novel method and equipment for improving dispersity of accelrator TMTD

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This example provides the structure of a continuous reaction device.

[0025]A new type of equipment for improving the dispersion of accelerator TMTD, including a device body, the device body includes a tubular reactor, the tubular reactor is installed horizontally, a row of blast pipes is arranged inside the tubular reactor, and the upper part is equipped with The vent pipe is connected to the exhaust gas absorption device. The inside of the tubular reactor is at normal pressure, the gas in the blowing tube is air, the flow rate does not need to be very high, there are uniform bubbles blowing out, and the tubular reactor is not under pressure. An overflow outlet is provided at the end, and water inlet pipelines, dimethylamine inlet pipelines, carbon disulfide inlet pipelines, and liquid caustic soda inlet pipelines are sequentially arranged in the direction from the reactor inlet to the outlet; The pipeline, the carbon disulfide inlet pipeline and the liquid caustic s...

Embodiment 2

[0033] This example provides a novel method for improving the dispersibility of the accelerator TMTD.

[0034] Use a graduated cylinder to measure 30ml of water, 115ml of dimethylamine aqueous solution with a mass fraction of 40%, 57ml of carbon disulfide with a mass fraction of 98% (add a small amount of water for liquid sealing to reduce volatilization), and 81ml of an aqueous sodium hydroxide solution with a mass fraction of 32%. , put into four custom-made glass beakers with glass outlets and switches at the bottom, and the steam pipes are put into the glass beakers where the water is placed, to heat the water and keep the temperature between 40-45 °C, and insert a thermometer at the same time Measurement. The remaining raw materials are charged at room temperature. First add 30ml of water dropwise, the speed of the peristaltic pump is 7.6 rpm, then add 115ml of dimethylamine dropwise, the speed of the peristaltic pump is 25.8 rpm, then add 57ml of carbon disulfide, the s...

Embodiment 3

[0043] On the basis of the conditions in Example 2, the feed rate of the raw materials was increased to carry out the feed reaction.

[0044] When the temperature of the reaction system is 25-45°C, open 57ml of water in turn, the peristaltic pump speed is 28.8 rpm, 218.5ml dimethylamine, the peristaltic pump speed is 98.0 rpm, 108.3ml carbon disulfide, the peristaltic pump speed is 49.4 rpm, 153.9 ml of liquid caustic soda, the speed of the peristaltic pump is 69.2 rpm, and the above four materials are added dropwise into the tubular reactor according to the above dosage and the speed of the peristaltic pump.

[0045] The liquid flowing out of the tubular reactor is Accelerator S, which is a light yellow liquid with no peculiar smell, a specific gravity of 1.070g / ml, no waste carbon, and a purity of 99.9%.

[0046]Add acidic hydrogen peroxide to the accelerator S in the transfer tank to PH=7, add 5.3g crystal A and 11.2g Tween 80 aqueous solution, then continue to add acidic h...

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Abstract

The invention belongs to the technical field of production of rubber vulcanization accelerators TMTD, and relates to a novel method and equipment for improving the dispersity of an accelerator TMTD. Continuous production can be achieved from feeding to discharging, and industrial operation is convenient to achieve. The tubular reactor is small in size and high in production efficiency, the synthesized accelrator S is stable in quality and free of peculiar smell, the yield of the further synthesized accelrator S is increased, the homogeneous reaction for oxidative synthesis of TMTD is guaranteed, and when Tween 80 and the seed crystal A are added, the dispersity of the product TMTD is improved, and the uniformity of the dispersity of the product is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rubber vulcanization accelerator TMTD production, and relates to a novel method and equipment for improving the dispersibility of the accelerator TMTD. Background technique [0002] At present, in the industrially synthesized accelerator TMTD, in the oxidation kettle after oxidation, the specific gravity of the material is less than 1, so the product floats or is suspended on the liquid. During the production process, the uneven stirring leads to product quality problems. During the material transfer process, it takes a long time and is difficult to transfer materials. After being packaged into a finished product, the electrostatic phenomenon in the product is very serious, that is, the dispersion of the product is very poor. During the storage of the product, it is easy to cluster and agglomerate due to static electricity, which seriously affects the storage period of the product. At the same time, bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C333/32C07C333/16C07C333/14
CPCC07C333/32C07C333/16C07C333/14
Inventor 刘园园张颂徐清华吕桂中姚显锋孟凡虎
Owner SHANDONG SUNSINE CHEM
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