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Preparation process of gamma-aminopropyl triethoxysilane

A technology of aminopropyltriethoxysilane and chloropropyltriethoxysilane, which is applied in the field of preparation technology of γ-aminopropyltriethoxysilane, can solve the problems of high cost, restrictive application, complicated process, etc. problems, to achieve the effects of low production cost, improved wettability, and simple process

Active Publication Date: 2015-10-07
JINGZHOU JIANGHAN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current γ-aminopropyltriethoxysilane product has complex process and high cost in the preparation process, which to a certain extent restricts its application in glass fiber reinforced plastics, plastics, adhesives, casting, textile printing and dyeing and other industries. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Put 1000kg of chloropropyltriethoxysilane and 3000kg of liquid ammonia into a 6000kg ammoniation kettle with magnetic stirring according to the mass of 1:3, slowly raise the temperature to 90°C, and then start stirring, the stirring speed is 100 rpm, the pressure Control it at 4Mpa, start using the ammonia collection kettle to collect ammonia after 8 hours of reaction, and cool down to 30°C after the ammonia collection is completed; obtain the primary product of γ-aminopropyltriethoxysilane. Pour the primary product of γ-aminopropyltriethoxysilane obtained from the reaction into a centrifuge for filtration; obtain 880 kg of crude γ-aminopropyltriethoxysilane and by-products.

[0019] Then pour the crude product of γ-aminopropyltriethoxysilane into the aging kettle and slowly raise the temperature to 120°C, start stirring at a rate of 300 minutes per revolution, add 50ml of hexamethylphosphoric triamide at the same time, and control the temperature of the kettle at 120°C ...

Embodiment 2

[0022] Put 1000kg of chloropropyltriethoxysilane and 3000kg of liquid ammonia into a 6000kg ammoniation kettle with magnetic stirring according to the mass of 1:3, slowly raise the temperature to 90°C, and then start stirring, the stirring speed is 90 rpm, the pressure Control it at 4Mpa, start using the ammonia collection kettle to collect ammonia after 8 hours of reaction, and cool down to 30°C after the ammonia collection is completed; obtain the primary product of γ-aminopropyltriethoxysilane. The primary product of γ-aminopropyltriethoxysilane obtained by the reaction was poured into a centrifuge for filtration; 850 kg of crude product of γ-aminopropyltriethoxysilane and by-products were obtained.

[0023] Then pour the crude product of γ-aminopropyltriethoxysilane into the aging kettle and slowly raise the temperature to 120°C, start stirring at a stirring rate of 250 minutes per revolution, add 50ml of dimethyl sulfoxide at the same time, control the temperature of the k...

Embodiment 3

[0026] Put 1000kg of chloropropyltriethoxysilane and 3000kg of liquid ammonia into a 6000kg ammoniation kettle with magnetic stirring according to the mass of 1:3, slowly raise the temperature to 90°C, and then start stirring, the stirring speed is 80 rpm, the pressure Control it at 4Mpa, start using the ammonia collection kettle to collect ammonia after 8 hours of reaction, and cool down to 30°C after the ammonia collection is completed; obtain the primary product of γ-aminopropyltriethoxysilane. The primary product of γ-aminopropyltriethoxysilane obtained by the reaction was poured into a centrifuge for filtration; 890kg of crude product of γ-aminopropyltriethoxysilane and by-products were obtained.

[0027] Then pour the crude product of γ-aminopropyltriethoxysilane into the aging kettle and slowly raise the temperature to 120°C, start stirring, the stirring rate is 280 minutes per revolution, the temperature of the kettle is controlled at 120°C, no catalyst is added; the ag...

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PUM

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Abstract

The invention relates to a preparation process of gamma-aminopropyl triethoxysilane, and belongs to the technical field of fine chemical engineering. The preparation process comprises the following steps of: reacting gamma-chloropropyl triethoxysilane and liquid ammonia at the weight ratio of 1:3, the temperature controlled at 90 DEG C and the pressure controlled at 4 MPa for 8 hours in an ammoniation kettle; filtering and separating, and then aging and stirring a crude product for 2-6 hours; adding a catalyst, keeping aging temperature at 120 DEG C, and reacting to obtain a gamma-aminopropyl triethoxysilane product with low total chlorine (less than or equal to 5ppm) and content more than or equal to 99.5%. The preparation process disclosed by the invention is simple and low in production cost and meets the requirements for enhancing the mechanical strength, electrical property and anti-aging property of a composite material on application in industries, namely glass steel, plastics, adhesives, casting, textile printing and dyeing and the like, at present.

Description

technical field [0001] The invention relates to a preparation process of gamma-aminopropyltriethoxysilane, which belongs to the technical field of fine chemicals. Background technique [0002] γ-Aminopropyltriethoxysilane is one of the varieties of silane coupling agents that have been increasingly used in industries such as glass fiber reinforced plastics, plastics, adhesives, casting, textile printing and dyeing in recent years. Used in the glass fiber industry, it can significantly improve the mechanical strength, electrical properties and anti-aging properties of the composite material. Adding it to the phenolic resin binder can improve the moisture resistance and increase the compression resilience. As an excellent adhesion promoter, it is used in polyurethane, epoxy, nitrile, phenolic adhesives and sealing materials to improve the dispersion of pigments and improve the adhesion to glass, aluminum and iron metals. After being used in resin sand casting, the amount of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18
Inventor 吴兵兵符正铭陈圣云阮少阳李云强甘俊甘书官
Owner JINGZHOU JIANGHAN FINE CHEM
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