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Fatty group end-amino polyether production method and special catalyzer preparation method

A technology of amino-terminated polyether and production method, which is applied in the field of chemical compounds, can solve the problems of many reaction by-products, high investment cost, and easy pollution of the environment, and achieve the effects of high reaction conversion rate, low investment cost, and no environmental pollution

Inactive Publication Date: 2004-11-17
JIANGSU CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

They found that too low a content (less than 10%) of aluminum in the commonly used Raney Ni catalyst affected the conversion and selectivity of the ammonolysis reaction
The production method of the above-mentioned type 2 has disadvantages such as long process flow, raw materials used are difficult to purchase, easy to pollute the environment, and many reaction by-products; the production method of type 3 has disadvantages such as complicated process, high production cost, and difficult to control the reaction; The method is currently the most important process line, but there are many continuous production equipment, high investment costs, and complex catalyst preparation

Method used

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  • Fatty group end-amino polyether production method and special catalyzer preparation method

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Experimental program
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Effect test

Embodiment 1

[0034]A kind of preparation method of special-purpose catalyst in the production method of aliphatic amino-terminated polyether, this catalyst is special-purpose skeleton nickel catalyst, and it comprises the following steps:

[0035] a) Take 75.0g of sodium hydroxide, add 300g of distilled water, and stir at 50-80°C to form a sodium hydroxide solution, and 60.0g of nickel metal accounts for about 45%, metal aluminum accounts for about 50%, and metal chromium accounts for about 5%. Customize the alloy, slowly add it to the sodium hydroxide solution while stirring, and then stir at a constant temperature of 70-80°C for 2.0 hours to fully react;

[0036] b) washing the prepared alloy with distilled water until neutral, with a pH value of 7 to 8;

[0037] c) washing the alloy twice with absolute ethanol to replace the moisture in the alloy;

[0038] d) Dip the alloy in absolute ethanol and seal it for later use.

Embodiment 2

[0040] A kind of production method of the aliphatic amino-terminated polyether of the present invention, it adopts gap kettle type reaction process catalytic ammoniation to synthesize aliphatic amino-terminated polyether, it comprises the following steps:

[0041] A) select special skeleton nickel catalyst, its main component is metal nickel, metal aluminum and metal chromium, the mass ratio of its each component is: metal nickel accounts for about 75%, metal aluminum accounts for about 20%, metal chromium accounts for about 5% %; The catalyst is sealed for subsequent use;

[0042] B) In the autoclave, the catalyst described in step A) is used to carry out the hydroammination reaction, and the addition amount of the catalyst is 45g; the raw material polyether polyol adopts 5000 molecular weight, trifunctional polyoxypropylene ether, and its addition The amount is 500g; the amount of liquid ammonia added is 3 to 20 times the number of hydroxyl moles in polyoxypropylene ether, w...

Embodiment 3

[0046] Another kind of production method of aliphatic amino-terminated polyether of the present invention, it adopts batch reaction process catalytic ammoniation to synthesize aliphatic amino-terminated polyether, it comprises the following steps:

[0047] A) select special skeleton nickel catalyst, its main component is metal nickel, metal aluminum and other metal components, the mass ratio of each component of it is: metal nickel accounts for about 75%, metal aluminum accounts for about 20%, metal chromium accounts for about 5%; The catalyst is sealed for subsequent use;

[0048] B) In the autoclave, the catalyst described in step A) is used to carry out the hydroammination reaction, and the addition amount of the catalyst is 40g; the raw material polyether polyol adopts 2000 molecular weight, difunctional polyoxypropylene ether, and its addition The amount is 500g; the amount of liquid ammonia added is 3 to 20 times the number of hydroxyl moles in polyoxypropylene ether, wh...

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Abstract

The invention discloses a fatty group end-amino polyether production method and special catalyzer preparation method, wherein the catalyst is special-purposed frame nickel catalyst, the custom made alloy is dissolved completely by sodium-hydroxide liquor under finite temperature and proportioning conditions, then distilled water is used for scouring to neutrality, then anhydrous alcohol is used for washing and sealing. The process for preparing the end-amino polyether comprises using the said special-purpose catalyst for reaction under finite concentration, temperature and proportioning conditions, thus the end-amino polyester can be obtained.wh

Description

1. Technical field [0001] The present invention relates to a compound, in particular to a class of polyoxyalkylene compounds terminated by primary amino groups. 2. Background technology [0002] Amine-Terminated Polyether (ATPE for short) is a kind of polyoxyalkylene compound terminated by primary or secondary amino groups. Because the terminal amino group of the macromolecular chain contains active hydrogen, it can react with isocyanate groups and epoxy groups. Therefore, in recent years, ATPE is mainly used as a synthetic raw material for polyurethane (polyurea) materials and as a curing agent for epoxy resins. In addition, ATPE can also be used as anti-turbidity and anti-sedimentation additives in engine fuel oil. [0003] According to the structure of the hydrocarbon group connected to the amino group, ATPE can be divided into two types: aromatic and aliphatic; according to the number of hydrogen atoms in the amino group, it can be divided into primary amino group and s...

Claims

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Application Information

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IPC IPC(8): C08G65/48
Inventor 郁维铭张金龙杨艳胡杰
Owner JIANGSU CHEM RES INST
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