Preparation method of organosilicon auxiliary agent

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...

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.

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