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Continuous preparation system and method of 3-[N-(2-aminoethyl)]aminopropyl alkoxy silane

An aminopropylalkoxysilane and preparation system technology, which is applied in the chemical industry, can solve the problems of harsh reaction environment, poor reaction continuity, and general output, and achieve the goals of cost reduction, cost saving, and increased yield Effect

Inactive Publication Date: 2018-02-09
GBXF SILICONES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems in the prior art that the reaction continuity is not good, high temperature and high pressure are required, the reaction environment is demanding, the cost is high, and the output is general, the present invention provides 3-[N-(2-aminoethyl)]aminopropyl Continuous preparation system and preparation method of alkoxysilane, which can realize work under normal pressure, and has low environmental requirements, high efficiency and good yield

Method used

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  • Continuous preparation system and method of 3-[N-(2-aminoethyl)]aminopropyl alkoxy silane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1Shown, 3-chloropropyl alkoxysilane and ethylenediamine react the distillation tank 1 that contains the unreacted ethylenediamine reaction liquid that finishes, and this distillation tank 1 is heated to more than the boiling point of ethylenediamine with heating mantle 1a, and A stirring rod 1b is provided, and a lower outlet 1c, an outlet 1d of evaporated ethylenediamine vapor, and a reaction liquid inlet 1e are included. One end of the heater 10 is connected to the vapor outlet 1d, the upper end of the packed tower 4 is connected to the other end of the heater 1, the outlet 3 of the packed tower at the lower part of the packed tower 4 is connected to the U-shaped reaction tube 5, and the packed tower 4 is connected to the U-shaped reaction tube at the lower part of the packed tower 5 constitutes a reactor, the packed tower 4 and the U-shaped reaction tube 5 are all provided with a heating device, and the other end of the U-shaped reaction tube 5 is conn...

Embodiment 2

[0041] Embodiment 2 is basically the same as Embodiment 1, and also in that the ethylenediamine recovery device connected to the receiver 8 can be connected to the ethylenediamine supply device of the circulation reaction, and the recovered ethylenediamine can enter the circulation reaction again, saving cost, the overall cycle is more scientific.

Embodiment 3

[0043] Embodiment 3 is basically the same as Embodiment 1. In the specific implementation project, the internal diameter of packed tower 4 can be set to 20mm, and the length of 700mm is made of glass, filled with glass rings, and the lower end of packed tower 4 is connected with one end of U-shaped reaction tube 5. The type reaction tube 5 is made of polytetrafluoroethylene, with an internal diameter of 10 mm and a total length of 1300 mm. It bends upwards from the lower end of the packed tower 4 at 300 mm, and bends downward again at the top of the lower end of the packed tower 4 at 130 mm. The port 1e is connected, and the bottom of the distillation tank 1 is connected with the receiver 8. Both the distillation tank 1 and the receiver 8 are made of glass, and each has a volume of 5000mL.

[0044] The specific steps are as follows:

[0045] The distillation tank 1 is heated to 20-120°C, and the amount of the mixed liquid ethylenediamine (condensed ethylenediamine + newly adde...

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Abstract

The invention discloses a continuous preparation system and method of 3-[N-(2-aminoethyl)]aminopropyl alkoxy silane and belongs to the field of chemical engineering. For solving the problems of poor reaction continuity, high temperature and high pressure demands, servere reaction environment requirements, low cost and unremarkable yield existing in the prior art, the continuous preparation systemof the 3-[N-(2-aminoethyl)]aminopropyl alkoxy silane comprises a distillation tank, wherein the distillation tank form a circular reaction pipeline through a heater, a filling tower and a U-shaped reaction tube which are connected in sequence, and the bottom of the distillation tank is connected with a receiver. By adopting the methods of circular reaction and continuous material supply, product preparation is performed, work under ordinary pressure can be achieved, the environmental requirements are, and the efficiency and yield are high.

Description

technical field [0001] The invention relates to the field of chemical industry, more specifically, to a continuous preparation system and method for 3-[N-(2-aminoethyl)]aminopropylalkoxysilane. Background technique [0002] Aminosilane is a chemical substance used in various industries such as FRP, coatings, casting, plastics, adhesives, sealants, and textile printing and dyeing. It is a tackifier for RTV silicone rubber. After the hydrogen atom in the Si-H bond in silane is replaced by alkoxy group, it is called alkoxysilane, such as methoxysilane, ethoxysilane, propoxysilane, butoxysilane, etc. In the reaction, silanol is first hydrolyzed to form silanol. Since silanol is unstable, it is very easy to combine with the hydroxyl group on the surface of inorganic matter or metal and dehydrate, thus combining with inorganic matter or metal. There are two active hydrogens on the amino group, which can react with various polymers, so that two materials with completely different...

Claims

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Application Information

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IPC IPC(8): C07F7/18
CPCC07F7/1804C07F7/1892
Inventor 席日勇
Owner GBXF SILICONES CO LTD
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