Preparation method of organosilicon auxiliary agent

A technology of organosilicon additives and solvents, which is applied in the field of preparation of organosilicon additives, can solve the problems of stable product quality, adverse effects on human health, difficulty in achieving performance, and waste of resources, and achieve stable and efficient raw material conversion. The effect of stable rate and simplified production process

Pending Publication Date: 2021-04-16
AFCONA CHEM HAIMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a manufacturer of various silicone additives, the output of each product is not large. If a dedicated kettle is used to produce each product, it will cause a huge waste of resources, and if the same kettle is used to produce different silicone additives solvent, it will also cause huge solvent waste and pollution in the process of washing the kettle
In addition, the traditional tank reactor has a small heat transfer area, and there will be a large safety hazard in the reaction at high temperature
During the production process of the batch kettle, the leakage of materials and the error of personnel operation will also have adverse effects on the stability of product quality and human health.
Finally, due to the complex heat and mass transfer conditions of the reactor, the quality of the product cannot be well controlled. Many products that are easy to achieve good performance in the small test situation are difficult to achieve or have poor performance in the industrial process.

Method used

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  • Preparation method of organosilicon auxiliary agent
  • Preparation method of organosilicon auxiliary agent
  • Preparation method of organosilicon auxiliary agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) The feed pump module 1, the mixer module 2, and the heat exchange reaction module 3 of the continuous flow tubular reactor are figure 1 The structures shown are connected sequentially, and the inner diameter of the continuous flow reactor in this embodiment is 1 mm. The temperature of the circulation system of the heat exchange reaction module 3 is set at 240° C., and the preheating time is 30 minutes, so that the heat exchange reaction module 3 is in a temperature equilibrium state.

[0046] (2) Set the flow rate of the feed pump to control the mixture of hydrogen-containing silicone oil and catalyst (the molecular weight of hydrogen-containing silicone oil is about 1200, and the active hydrogen content is about 0.17wt%; the catalyst is chloroplatinic acid hydrate, and the consumption is the total mass of the mixture The flow rate of 0.01%) is 1.1mL / min, and the flow rate of allyl monoethylene glycol ether is 0.2mL / min, which can be adjusted according to this ratio...

Embodiment 2

[0050] (1) The continuous flow reactor used in this example is the same as in Example 1. The temperature of the circulation system of the heat exchange reaction module 3 is set at 230° C., and the preheating time is 30 minutes, so that the heat exchange reaction module 3 is in a temperature equilibrium state.

[0051] (2) Set the flow rate of the feed pump to control the mixture of hydrogen-containing silicone oil and catalyst (the molecular weight of hydrogen-containing silicone oil is about 1200, and the active hydrogen content is about 0.17wt%; the catalyst is chloroplatinic acid hydrate, and the consumption is the total mass of the mixture 0.01% of ) flow rate is 2.0mL / min, and the flow rate of 3-buten-1-ol is 0.3mL / min, which can be adjusted according to this ratio according to the needs of residence time.

[0052] (3) After the two streams of materials are mixed by the mixer module 2, they enter the heat exchange reaction module 3 for reaction, and the reaction temperatur...

Embodiment 3

[0055] (1) The continuous flow reactor used in this example is the same as in Example 1, and the temperature of the circulation system of the heat exchange reaction module 3 is set to 200° C., and the preheating time is 30 minutes, so that the heat exchange reaction module 3 is in a temperature equilibrium state.

[0056] (2) Set the flow rate of the feed pump to control the mixture of hydrogen-containing silicone oil and catalyst (the molecular weight of hydrogen-containing silicone oil is about 1200, and the active hydrogen content is about 0.17wt%; the catalyst is Castel platinum catalyst, and the consumption is the total mass of the mixture The flow rate of 0.02%) is 2.0mL / min, and the flow rate of dodecene is 0.8mL / min, which can be adjusted according to this ratio according to the needs of the residence time.

[0057] (3) After the two streams of materials are mixed by the mixer module 2, they enter the heat exchange reaction module 3 for reaction. The reaction temperatur...

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Abstract

The invention relates to a preparation method of an organosilicon auxiliary agent, which comprises the following steps: respectively introducing a mixture of hydrogen-containing silicone oil and a catalyst, and one or more of aliphatic hydrocarbon, ether and alcohol containing double bonds into a tubular continuous flow reactor, and carrying out hydrosilylation reaction to obtain the organosilicon auxiliary agent, wherein the catalyst is salt of transition metal, the temperature in the tubular continuous flow reactor is controlled to be 50-300 DEG C, and the retention time of the material in the tubular continuous flow reactor is 1-600s. The preparation method provided by the invention can realize continuous production of different types of organosilicon polymer assistants, and greatly simplifies the production process of different door products; the conversion rate of the raw materials can reach 90% or above in a short time, and the conversion rate of the raw materials is stable; the preparation method provided by the invention can effectively ensure the product quality, can improve the production efficiency and can reduce the production cost.

Description

technical field [0001] The invention specifically relates to a method for preparing an organosilicon additive. Background technique [0002] Silicone materials have become indispensable key materials in the fields of aviation, high-tech, national defense and national economy, and are listed as one of the key industries encouraged by the state. At present, the development of silicone downstream high value-added products is one of the key points in the development of the silicone industry. Polymer silicone defoamer, leveling agent and dispersant are typical representatives of high value-added silicone products. At present, the production of this series of silicone additives is produced by batch kettles, and the reaction time is about 2 to 5 hours. , In addition, considering the time of feeding, titrating and washing the kettle, the whole production process may be as long as 6 to 8 hours. For a manufacturer of various silicone additives, the output of each product is not larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/38C08G77/46B01D19/04
CPCC08G77/38C08G77/46B01D19/04
Inventor 王志军
Owner AFCONA CHEM HAIMEN
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