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A fluidized bed reaction process for preparing amino-terminated polyether

A technology of amino-terminated polyether and fluidized bed reaction, which is applied in the chemical industry and can solve problems such as low conversion rate

Active Publication Date: 2021-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] US3236895 discloses a synthesis process of polyetheramine, using a skeleton nickel catalyst, at a reaction temperature of 235~255°C and a pressure of 140~170kg / cm ２ , and add an appropriate amount of solvent, when the conversion rate is less than 70%

Method used

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  • A fluidized bed reaction process for preparing amino-terminated polyether
  • A fluidized bed reaction process for preparing amino-terminated polyether
  • A fluidized bed reaction process for preparing amino-terminated polyether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Use 10~20 mesh r-Al 2 o 3 Microspheres are used as a carrier to prepare a supported catalyst, in which the nickel content is 30%, the copper content is 10%, the catalyst loading volume is 50ml, and the liquid ammonia space velocity is 0.5h -1 , The reaction temperature is 230°C, and the results of synthesizing amino-terminated polyethers with different molecular weights are shown in Table 1.

[0025] Table 1 Example 1 reaction result

[0026]

Embodiment 2

[0028] Use 20~40 mesh r-Al 2 o 3 Microspheres are used as a carrier to prepare a supported catalyst, in which the nickel content is 40%, the copper content is 5%, the iron content is 3%, the catalyst loading volume is 50ml, and the liquid ammonia space velocity is 1.0h -1 , The reaction temperature is 250°C, and the results of synthesizing amino-terminated polyethers with different molecular weights are shown in Table 2.

[0029] Table 2 Example 2 reaction results

[0030]

Embodiment 3

[0032] Use 80~100 mesh r-Al 2 o 3 Microspheres are used as a carrier to prepare a supported catalyst, in which the nickel content is 35%, the copper content is 8%, the iron content is 5%, the catalyst loading volume is 50ml, and the liquid ammonia space velocity is 0.8h -1 , The reaction temperature is 245°C, and the results of synthesizing amino-terminated polyethers with different molecular weights are shown in Table 3.

[0033] Table 3 Example 3 reaction results

[0034]

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Abstract

A fluidized bed reaction process for preparing amino-terminated polyether, comprising the following steps: (1) Nickel-based catalysts of different specifications and sizes are loaded into the fluidized bed, and the active component of the catalyst is one of nickel, copper, and iron. The mass ratio of active components is 20~60%; (2), liquid ammonia and hydrogen are fed into the gas feed port at the bottom of the fluidized bed, and the excess gas is discharged from the top of the fluidized bed through a device The liquid separation tank separates the water and enters the fluidized bed for mechanical use; (3), polyether alcohols with different molecular weights are added from the liquid feed port at the top of the fluidized bed, and react with ammonia, hydrogen and catalysts from top to bottom; (4) ), the reaction material enters the raw material receiving tank from the bottom of the fluidized bed. The reaction pressure is low, the liquid space velocity is high, and it is easy to scale up, so it has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a fluidized bed reaction process for preparing amino-terminated polyether. Background technique [0002] Polyetheramine (PEA), also known as amino-terminated polyether, or ATPE for short, is a class of polyalkylene oxide compounds terminated by primary or secondary amino groups. Because the terminal amino group of its molecular chain contains active hydrogen, which can interact with various reactive groups, the application of this kind of products is becoming more and more extensive. [0003] The active hydrogen contained in amino-terminated polyether can react with isocyanate group and epoxypropyl group. Therefore, in recent years, amino-terminated polyether is mainly used as a synthetic raw material for polyurethane (polyurea) materials, RIM (reaction injection molding) Products and curing agent for epoxy resin. The polyurea elastomer made of amino-termi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/00
CPCC08G65/00C08G2650/50
Inventor 黄冬袁俊秀王康杨智中逯贵广徐冬梅
Owner CHINA PETROLEUM & CHEM CORP
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