Ether amine flotation agent synthesis method

A synthesis method and flotation agent technology, applied in chemical instruments and methods, preparation of organic compounds, preparation of amino hydroxyl compounds, etc., can solve the problems of increasing the difficulty of product separation, high requirements for equipment operation, and prone to side reactions , to achieve the effects of low reaction process difficulty, simple and safe operation, and easy separation and purification

Inactive Publication Date: 2015-08-12
广东省石油化工研究院
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Problems solved by technology

Although the yield of this method is high, the process includes a hydrogenation reduction process, which requires high equipment operation, and side reactions are prone to occur during the hydrogenation reduction process to generate secondary amines, tertiary amines, etc., which increases the difficulty of product separation. Production higher cost

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  • Ether amine flotation agent synthesis method
  • Ether amine flotation agent synthesis method
  • Ether amine flotation agent synthesis method

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preparation example Construction

[0026] A method for synthesizing etheramine flotation agents comprises the following steps: fully reacting fatty alcohol metal salts and haloalkylamines in a solvent under normal pressure.

[0027] Preferably, the fatty alcohol metal salt is C 5 ~C 12 Alkali metal salts of fatty alcohols, C 5 ~C 12 At least one of alkaline earth metal salts of fatty alcohols.

[0028] Preferably, said haloalkylamine is at least one of fluoroalkylamine, chloroalkylamine, bromoalkylamine, and iodoalkylamine; further preferably, said haloalkylamine The alkyl group is selected from one of ethyl, propyl, butyl, and pentyl.

[0029] Preferably, the solvent is fatty alcohol; more preferably, the fatty alcohol is C 5 ~C 12 fatty alcohol.

[0030] Preferably, the molar ratio of haloalkylamine to fatty alcohol is 1:4˜1:8.

[0031] Preferably, the molar ratio of haloalkylamine to fatty alcohol metal salt is 1:1˜1:1.5.

[0032] Preferably, the reaction temperature is 80-150° C.; the reaction time...

Embodiment 1

[0036] (1) Under normal pressure, add 0.1mol chloroethylamine hydrochloride, 0.3mol n-hexanol to the round bottom flask, gradually precipitate white needle-like crystals, react for 1h, filter, and collect the filtrate;

[0037] (2) Add 0.2mol n-hexanol and 0.1mol sodium hydride (4.80g, 50wt%) in a three-necked flask equipped with a condenser and a stirrer, and react for 30min;

[0038] (3) Add the filtrate of step (1) dropwise into the three-necked flask of step (2), heat up to 80°C, react for 2 hours, filter, and collect the filtrate to obtain hexyl ethyl ether amine solution.

[0039] Such as figure 1 For the infrared spectrogram of the hexyl ethyl ether amine obtained in the present embodiment, figure 2 It is the mass spectrum of hexyl ethyl ether amine.

[0040] Correspondingly, the following two tables are the corresponding map analysis:

[0041] Table 1: The functional groups corresponding to the main absorption peaks in the infrared spectrum of hexyl ethyl ether a...

Embodiment 2

[0046] (1) Under normal pressure, add 0.1mol chloroethylamine hydrochloride, 0.25mol n-hexanol to the round bottom flask, gradually precipitate white needle-like crystals, react for 1h, filter, and collect the filtrate;

[0047] (2) Add 0.25mol n-hexanol and 0.13mol sodium hydride (6.24g, 50wt%) in a three-necked flask equipped with a condenser and a stirrer, and react for 30min;

[0048] (3) Add the filtrate of step (1) dropwise into the three-necked flask of step (2), raise the temperature to 80°C, react for 1.5h, filter, and collect the filtrate to obtain the hexyl ethyl ether amine solution.

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Abstract

The invention discloses an ether amine flotation agent synthesis method. The method comprises that under normal pressure, fatty alcohol metal salt and halogenated alkylamine undergo a full reaction in a solvent. The method has the advantages of normal pressure reaction, less equipment investment, simple and safe operation, low cost, simple and easily available raw materials, no catalyst, use of fatty alcohol as a solvent, less by-product, low reaction technology difficulty, mild reaction condition, simple processes, high yield and easy separation and purification of products.

Description

Technical field [0001] The invention involves a synthesis method of a snorkeling agent of etherine. Background technique [0002] Ergethamine is a cationic surface active agent. Floating test studies have shown that etherine has the same flotation properties and recovery properties of fattyine. The introduction of a ether group on the alkyl group of amine can significantly reduce the melting point.It can overcome the solid of the long -chain fat amine at room temperature. It is difficult to dissolve in the water. The floating process cannot be fully dispersed and cannot exert the maximum picking performance. [0003] Ergetamine has the advantages of fast -lled speed, good selectivity, and easy processing such as transportation and dehydration of foam products. For improving the selection of red iron ore ore, it is a kind of effective and broad -future pharmaceutical agent.At present, the synthesis method of ether amines is mainly complicated by collapsed by acrylin and alcohol un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C217/08C07C213/00
Inventor 翁行尚赵鹏文武文铭孝张小春陈伟健
Owner 广东省石油化工研究院
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