Method for preparing polyether amine through direct amination of polyether polyol

A technology of polyether alcohol and polyether amine, which is applied in the field of preparation or chemical processing of organic polymer compounds, can solve the problems of high energy consumption and equipment cost, unfavorable switching production of polyether amine, and great influence on the catalytic activity of catalysts, etc. Achieve the effects of low investment in process equipment, convenient product switching, and not easy to block

Pending Publication Date: 2017-07-18
SHANGYU HUANGMA SURFACE ACTIVATED REAGENT RESEARCH INSTITUTE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering that the large amount of water generated in the production process has a great impact on the catalytic activity of the catalyst, it is necessary to continuously remove water in the continuous process. Therefore, the energy consumption and equipment costs in the above continuous process are large, and it is not conducive to Niche polyetheramine switching production

Method used

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  • Method for preparing polyether amine through direct amination of polyether polyol
  • Method for preparing polyether amine through direct amination of polyether polyol
  • Method for preparing polyether amine through direct amination of polyether polyol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the composition of different catalysts

[0026] γ-Al 2 o 3 As a carrier, any three or more combinations of metal nickel 5-15%, cobalt 5-10%, rhenium 2-10%, molybdenum 1-5%, and lanthanum 1-5% are loaded. 1.

[0027] Table 1 Different catalyst composition

[0028]

[0029]

[0030] We also tested the amount of catalyst added: CAT-4 was used as the catalyst, PPG-5000 was selected as the polyether, polyether: liquid ammonia (mol) = 1:5; the hydrogen pressure was 1.0MPa, and the reaction temperature was 180°C. The reaction pressure is 10MPa, and the holding time is 4 hours; the diameter of the stirring paddle of the reactor is 2 / 3 of the internal diameter of the kettle, the inclination angle of the propulsion type stirring paddle is 45°, the bottom end is a propulsion type paddle, and the height of 2 / 3 It is a turbine-type stirring paddle, and the addition amount of the catalyst is also tested under the same conditions, and the results show that when...

Embodiment 2

[0031] Embodiment 2: the reaction effect of different catalysts

[0032] The catalyst prepared in Example 1 was added into a high-pressure reactor, wherein the stirring blade of the reactor was a combined stirring blade. The bottom end is a push-type stirring paddle, the inclination angle of the push-type stirring paddle is 45°, the diameter is 2 / 3 of the internal diameter of the kettle, and the 2 / 3 height is a turbine-type stirring paddle. Add polyether, liquid ammonia and hydrogen to the reactor in sequence. Slowly raise the temperature to the required temperature and keep it warm for a certain period of time, turn off the heating power supply, and turn on the cooling water to cool down and discharge the material.

[0033] The reaction effect of different catalysts in table 2

[0034]

[0035]

[0036] Test 1: The amount of catalyst added is 10% of the whole system, the reaction temperature is 180°C, the reaction pressure is 10MPa, the holding time is 5 hours, and th...

Embodiment 4

[0058] Embodiment 4: the influence of different amination conditions on the finished product effect

[0059] In this embodiment, CAT-4 is used as the catalyst, the amount of catalyst added is 10% of the whole system, and the polyether is selected from PPG-5000; the diameter of the stirring paddle of the reactor is 2 / 3 of the internal diameter of the kettle, and the The inclination angle is 45°, the bottom end is a propulsion type stirring paddle, and the 2 / 3 height is a turbine type stirring paddle. During the reaction, the water content is lower than 1%. Different synthesis conditions are tested, as shown in Table 4.

[0060] The influence of table 4 different amination conditions on synthetic effect

[0061]

[0062]

[0063] (1) Effect of addition ratio: Under the same conditions, the polyether: liquid ammonia molar ratio was tested separately for three grades of lower than 1:5, 1:5-15, and higher than 1:15, see Table 4 for details The serial numbers 1-14. As can be...

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Abstract

The invention relates to a method for preparing polyether amine through direct amination of polyether polyol and belongs to the technical field of preparation or chemical processing of organic macromolecule compounds. The polyether polyol, liquid ammonia and hydrogen are added to a reaction kettle system at one time at a ratio, and amination reaction is directly carried out under the catalysis action of a catalyst, wherein the catalyst contains a carrier and metals; the carrier is gamma-Al2O3 and a loaded metal is combination of any three or more of nickel, cobalt, rhenium, molybdenum and lanthanum; the loading capacity of the metals is 5-15% of nickel, 5-10% of cobalt, 2-10% of rhenium, 1-5% of molybdenum and 1-5% of lanthanum; and the output of a byproduct water in the amination reaction process is lower than 1%. The method is applied to production of polyether amine and has the advantages that the catalytic activity of a system is stable and a product is convenient to switch.

Description

technical field [0001] The invention relates to a method for preparing polyetheramine by direct amination of polyether alcohol, belonging to the technical field of preparation or chemical processing of organic polymer compounds. Background technique [0002] Polyether amine (PEA) is a kind of polymer whose main chain is a polyether structure and the terminal active functional group is an amine group. ammoniated polyethers. By selecting different polyoxyalkylene structures, a series of properties such as reactivity, toughness, viscosity and hydrophilicity of polyetheramine can be adjusted, and the amine group provides the possibility of polyetheramine reacting with various compounds. Its special molecular structure endows polyetheramine with excellent comprehensive performance. The current commercialized polyetheramine includes a series of monofunctional, difunctional and trifunctional products with a molecular weight ranging from 230 to 5000. Such compounds can be widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/325
CPCC08G65/3255C08G2650/10C08G2650/50
Inventor 宋明贵尹红金一丰余江王新荣俞芳
Owner SHANGYU HUANGMA SURFACE ACTIVATED REAGENT RESEARCH INSTITUTE CO LTD
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