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System and method for synthesizing rubber scorch retarder CTP

A technology of synthetic rubber and anti-scorch agent, which is applied in chemical instruments and methods, chemical/physical/physical-chemical reactors, chemical/physical/physical-chemical processes, etc. There are many problems such as side reactions, which can achieve considerable economic and social benefits, improve production efficiency and reaction yield, and improve purity and quality stability.

Active Publication Date: 2019-06-14
TANGYIN YONGXIN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the synthesis process of the batch reaction of CTP, because the reaction raw materials are easy to decompose and the two phases are not easy to be fully mixed evenly during the reaction, the mass transfer efficiency of this heterogeneous reaction will be poor, the reaction time will be long, the side reactions will be many, and the yield will be low. and the purity is not high

Method used

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  • System and method for synthesizing rubber scorch retarder CTP
  • System and method for synthesizing rubber scorch retarder CTP
  • System and method for synthesizing rubber scorch retarder CTP

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Continuous flow micro-reaction synthetic rubber anti-scorch agent CTP system

[0070] This embodiment provides a Figure 5 The shown continuous flow micro-reaction synthetic rubber anti-scorch agent CTP system includes: cyclohexyl sulfenyl chloride and catalyst mixed solution delivery pipeline 1, phthalimide sodium salt and catalyst mixed solution delivery pipeline 2, micro-reaction device 11, acidity Meter 12 and post-processing device 13.

[0071] In this embodiment, the cyclohexylsulfenyl chloride and catalyst mixed liquid delivery pipeline 1 is sequentially provided with a first filter 3, a first advection metering pump 5, a first mass flow meter 7 and a first pressure gauge9.

[0072] In this embodiment, the phthalimide sodium salt and the catalyst mixed liquid delivery pipeline 2 are sequentially provided with a second filter 4, a second advection metering pump 6, a second mass flow meter 8 and a second flow meter along the mixed liquid delivery direction. Two ...

Embodiment 2

[0081] Method for synthesizing rubber anti-scorch agent CTP by continuous flow micro-reaction

[0082] Carry out the synthesis of rubber anti-scorch agent CTP in the system that embodiment 1 provides, wherein, the micro-reaction device in the described system selects Y-type feed inlet microchannel reactor, and concrete synthetic process is as follows:

[0083] Mix the catalyst (benzyltriethylammonium chloride) evenly into the prepared cyclohexylsulfenyl chloride solution with a concentration of 12 to 25 wt% and a temperature of -5 to 15°C. The amount of the catalyst is cyclohexyl 5‰ of the mass of the sulfenyl chloride solution; the prepared sodium phthalimide solution with a concentration of 15-30 wt% is stored in an environment of -3-10°C.

[0084] Start the first and second advection metering pumps simultaneously afterwards, and the mixed solution of cyclohexylsulfenyl chloride and catalyst (referred to as reaction solution A) and phthalimide sodium salt solution (referred ...

Embodiment 3

[0088] Method for synthesizing rubber anti-scorch agent CTP by continuous flow micro-reaction

[0089] Carry out the synthesis of rubber anti-scorch agent CTP in the system that embodiment 1 provides, wherein, the micro-reaction device in the described system selects to have multi-stage stator-rotor high-shear reactor, and concrete synthetic process is as follows:

[0090] Mix the catalyst (benzyltriethylammonium chloride) evenly into the sodium phthalimide salt solution with a concentration of 15-30wt% and a temperature of -3-10°C. The amount of catalyst used is sodium phthalimide 5‰ of the quality of the salt solution; the prepared cyclohexylsulfenyl chloride solution with a concentration of 12-25 wt% is stored in an environment of -5-15°C.

[0091] Start the first and second advection metering pumps simultaneously afterwards, and the mixed solution of cyclohexylsulfenyl chloride solution (referred to as reaction solution A) and phthalimide sodium salt and catalyst (referred...

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Abstract

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a system and a method for synthesizing rubber scorch retarder CTP. The system provided by the invention comprises a conveying pipeline for cyclohexyl sulfenyl chloride and catalyst mixed liquid, a conveying pipeline for phthalimide sodium salt and catalyst mixed liquid, and a micro-reaction device, wherein the micro-reaction device is respectively connected with the material outlet of the conveying pipeline for cyclohexyl sulfenyl chloride and catalyst mixed liquid and the material outlet ofthe conveying pipeline for phthalimide sodium salt and catalyst mixed liquid; the micro-reaction device is a microchannel reactor, a high-shear reactor or a pipe-type reactor. According to the systemprovided by the invention, liquid and liquid two-phase liquid is used for being in full contact in the micro-reaction device to react to synthesize the rubber scorch retarder CTP, the uninterrupted reaction of the CTP synthesis is realized, and the production efficiency and the reaction yield of the synthesized CTP can be greatly improved. Meanwhile, the purity and the quality stability of the product are improved. the system has a good application prospect and can generate considerable economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a system and method for continuous flow micro-reaction synthetic rubber anti-scorch agent CTP. Background technique [0002] The chemical name of rubber anti-scorch agent CTP (PVI) is N-cyclohexylthiophthalimide, CAS: 17796-82-6, molecular formula: C 14 h 15 o 2 SN, molecular weight: 261.3, physical and chemical properties: white or light yellow crystal, easily soluble in benzene, ether, acetone and ethyl acetate, soluble in warm n-heptane and carbon tetrachloride. Slightly soluble in gasoline, insoluble in kerosene and water. It is an additive that can effectively prevent rubber from scorching during processing. It has been widely used in the fields of natural rubber and synthetic rubber. It has a good anti-scorch effect when used with various general-purpose accelerators. Under the premise of affecting the vulcanization speed and the performance of the vu...

Claims

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Application Information

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IPC IPC(8): B01J19/00C07D209/48
CPCB01J19/0093C07D209/48B01J2219/00867B01J2219/00889B01J2219/00876
Inventor 张迎宾宋魁璟尧红梅张鑫浩
Owner TANGYIN YONGXIN CHEM CO LTD
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