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  Currently, in industry, methyltrichlorosilane and acetic anhydride are commonly used as raw materials for acylation reactions to synthesize methyltriacetoxysilane products. The content can reach over 95%, and the total chlorine content is ≤100ppm. The reaction formula is as follows: CH3SiCl3 + 3C4H6O3 → (CH3CO2)3SiCH3 + 3C2H3ClO. The production process is as follows: Using methyltrichlorosilane and acetic anhydride as raw materials, the materials are added to the synthesis reactor in a certain proportion for the acylation reaction. The temperature is first raised to 80℃ for atmospheric pressure reflux reaction, and acetyl chloride is collected while refluxing at 80~95℃ until the flow is stopped. The semi-finished methyltriacetoxysilane in the synthesis reactor is transferred to a crude synthesis tank. The semi-finished product is then pumped to an acetyl chloride vacuum thin-film evaporator, where the feeding temperature is controlled at 100℃ to distill off acetic anhydride and acetyl chloride. The material is then pumped to an acetic anhydride vacuum thin-film evaporator, where the feeding temperature is controlled at 105-115℃ to obtain the finished methyltriacetoxysilane. Material containing a large amount of acetic anhydride is extracted from both vacuum thin-film evaporators and returned to the synthesis reactor. The finished methyltriacetoxysilane is then decolorized in a decolorization reactor using activated carbon at 70℃. After decolorization, the material is filtered through a candle filter into a modification reactor to obtain pure methyltriacetoxysilane.;

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