Production process of aliphatic polyetheramine

A production process and aliphatic technology, applied in the field of polymer materials, can solve the problems of strict reaction conditions, easy self-polymerization of acrylonitrile, and practical operation difficulties, and achieve the effects of good selectivity, convenient post-processing, and less environmental pollution

Inactive Publication Date: 2012-02-01
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cyanoalkylation method is the addition reaction of polyether polyols with acrylonitrile, and the production route of this method is simple, but in the reaction process of polyether polyols and acrylonitrile, there are many side reactions, and acrylonitrile is easily Self-polymerization, so the reaction conditions are strict, and the actual operation is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Make 1.3~1.5 times of NaOH into a 20% aqueous solution, put it into a stainless steel three-neck flask equipped with a thermometer, cool it to 50°C with running water, and add Ni-Al alloy to it in batches under vigorous stirring (each 2~4g each time), the addition is completed within 25~30min. Adjust the speed of adding the alloy so that the temperature of the liquid is kept around 50°C. After the feeding is completed, react at about 80°C for about 90 minutes while stirring. After the production of hydrogen is completed and the mixture is still, the white flocculent reaction product in the upper layer is separated, and the precipitated black Raney nickel catalyst is moved to a beaker, and washed with water until the lotion is neutral to litmus. Then wash with 95% ethanol and absolute ethanol for 2 to 3 times respectively, and finally put them in a container with a closed stopper in absolute ethanol.

Embodiment 2

[0052] Add 100g of hydroxyl-terminated polyoxypropylene ether (polyether department of Tianjin Petrochemical Co., Ltd.) with a number average molecular weight of 230.8 and a functionality of 2 into a 0.5L autoclave, and 10g of a special skeleton nickel catalyst. Replace the reactor with 0.4MPa nitrogen and hydrogen for 2 to 3 times respectively, pour about 43L of ammonia into the reactor under stirring (under standard conditions), adjust the outlet pressure of the hydrogen cylinder to 4.0MPa, and fill the reactor with hydrogen When the pressure is balanced, the temperature is raised by heating, and the reaction temperature is controlled at 200° C., the reaction time is 4 hours, and the maximum reaction pressure is 13.0 MPa. After the reaction, pass cooling water until the temperature of the reactor is 50°C, slowly exhaust, the gas is absorbed by the secondary water, and the material is discharged.

[0053] Filter the reaction solution while it is hot to separate the catalyst a...

Embodiment 3

[0055] Add 100g of hydroxyl-terminated polyoxypropylene ether (polyether department of Tianjin Petrochemical Co., Ltd.) with a number average molecular weight of 230.8 and a functionality of 2 into a 0.5L autoclave, and 15g of a special skeleton nickel catalyst. Replace the reactor with 0.4MPa nitrogen and hydrogen for 2 to 3 times respectively, pour about 43L of ammonia into the reactor under stirring (under standard conditions), adjust the outlet pressure of the hydrogen cylinder to 4.0MPa, and fill the reactor with hydrogen When the pressure is balanced, the temperature is raised by heating, and the reaction temperature is controlled at 200° C., the reaction time is 4 hours, and the maximum reaction pressure is 12.5 MPa. After the reaction, pass cooling water until the temperature of the reactor is 50°C, slowly exhaust, the gas is absorbed by the secondary water, and the material is discharged.

[0056] Filter the reaction solution while it is hot to separate the catalyst a...

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PUM

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Abstract

The invention belongs to the technical field of high molecular materials and provides a production process of aliphatic polyetheramine. In the process, aliphatic polyetheramine is prepared by catalyzing, reducing and aminating polyether polyol of which the number-average molecular weight is over 100 and which serves as a raw material in the presence of hydrogen gas, an aminating agent and a framework nickel catalyst. The framework nickel catalyst consists of 85-95 percent by mass of metal nickel and 15-5 percent of metal aluminum. The framework nickel catalyst and the aminating agent are circularly applied mechanically after being treated. The entire process has the advantages of high route selectivity, high transformation ratio, low environmental pollution and convenience for post-treatment.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a polymer, in particular to a production process of aliphatic polyetheramine. Background technique [0002] Polyether amine is a kind of compound with soft polyether backbone and end capped with amino or amino groups. Most of these compounds are obtained by chemically treating terminal hydroxyl groups with corresponding polyether polyols as raw materials. According to the structure of the hydrocarbon group connected to the terminal amino group, it can be divided into two types: aromatic and aliphatic. At present, aliphatic polyetheramines are widely used in the fields of epoxy resin, polyurethane, and spray polyurea elastomer (Spray Polyurea Elastomer, referred to as SPUA). In 2002, the global output of SPUA materials was about 11,300 tons, and they have been widely used in chemical anticorrosion, pipelines, construction, ships, water conservancy, transportation, machinery, mine w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/325
Inventor 储政袁俊秀杨智中逯贵广朱魁黄冬
Owner CHINA PETROCHEMICAL CORP
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