Preparation method and application of flame-retardant polyether containing N and Br

A technology of flame-retardant polyether and reaction, which is applied in the field of preparation of organic polymer compounds, can solve problems such as the escape of external flame retardants, poor flame-retardant effect, and impact on the quality of polyurethane materials, and achieves obvious flame-retardant effect and foam The effect of good quality and simple preparation method

Inactive Publication Date: 2015-01-21
JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of polyurethane materials prepared by adding flame retardants is affected, and the ad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for preparing nitrogen-containing and bromine-containing flame-retardant polyether, which uses ethylenediamine and dibromoneopentyl glycol as initiators; dimethylamine as a catalyst; and propylene oxide ring-opening polymerization reaction. Including the following steps:

[0015] 1) The parts by weight of raw materials are: ethylenediamine (Nanjing Gutian Chemical Co., Ltd.) 5 parts; dibromoneopentyl glycol (Shanghai Ruishuo Chemical Co., Ltd.) 20 parts; dimethylamine (Nanjing Gutian Chemical Co., Ltd.) 0.5 ; Dimethylamine is a 40% aqueous solution of dimethylamine in mass percent. Propylene oxide (Shandong Binhua Group Co., Ltd.) 73.5 parts;

[0016] 2) Put ethylenediamine and dibromoneopentyl glycol into the reactor, then add dimethylamine, then feed propylene oxide at 130°C, and keep the temperature at 130°C after the addition of propylene oxide Stir at low temperature for 1 hour to fully react the system, then vacuumize and filter to obtain the flame-reta...

Embodiment 2

[0018] Another preparation method of a nitrogen-containing bromine-containing flame-retardant polyether is prepared by using ethylenediamine and dibromoneopentyl glycol as initiators; dimethylamine as a catalyst; and propylene oxide ring-opening polymerization reaction. Including the following steps:

[0019] Raw material parts by weight: 10 parts of ethylenediamine (Nanjing Gutian Chemical Co., Ltd.); 35 parts of dibromoneopentyl glycol (Shanghai Ruishuo Chemical Co., Ltd.); 2 parts of dimethylamine (Nanjing Gutian Chemical Co., Ltd.); Oxypropane (Shandong Binhua Group Co., Ltd.) 53 parts;

[0020] Put ethylenediamine and dibromoneopentyl glycol into the reactor, then put in dimethylamine, then feed propylene oxide at a temperature of 110°C, and stir at a temperature of 110°C for 3 Hours, the system was fully reacted, then vacuumed and filtered to obtain the flame retardant polyether.

[0021]

Embodiment 3

[0023] An application of the flame-retardant polyether prepared by the above-mentioned preparation method in polyurethane foam, take 100 parts of flame-retardant polyether, 2 parts of silicone oil, 0.2 parts of triethylenediamine catalyst, 3 parts of water, 110 parts of isocyanate, and mix at high speed After foaming, polyurethane foam products are obtained. The flame retardant effect of the product is obvious and the flame retardant performance of the foam will not deteriorate over time.

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Abstract

The invention discloses a preparation method and application of flame-retardant polyether containing nitrogen and bromine. The flame-retardant polyether contains N and Br elements and is reactive flame-retardant polyether. According to the preparation method, the flame-retardant polyether containing N and Br is prepared from the following raw materials in parts by weight: 5-10 parts of ethylenediamine, 20-35 parts of dibromoneopentyl glycol, 0.5-2.0 parts of dimethylamine and 53-74.5 parts of epoxy propane. Polyurethane foaming plastics prepared from the flame-retardant polyether have a favorable flame-retardant effect and have the advantages of stable flame retardance and better foam quality as comparison with polyurethane foaming plastics prepared by additionally adding a flame retardant.

Description

technical field [0001] The invention relates to a method for preparing an organic polymer compound, in particular to a method for preparing a nitrogen-containing and bromine-containing flame-retardant polyether and the application of the obtained product. Background technique [0002] Ordinary polyurethane foam is a flammable material. In order to meet the requirements of flame retardancy, flame retardants are usually added when preparing polyurethane foam. However, the quality of polyurethane materials prepared by adding flame retardants is affected, and the added flame retardants will escape with the passage of time, and the flame retardant effect is getting worse. Contents of the invention [0003] In order to overcome the problems existing in the prior art, the purpose of the present invention is to provide a preparation method of nitrogen-containing and bromine-containing flame-retardant polyether and the application of the obtained product. Foamed plastics have a go...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/50
Inventor 应珏翟洪金郑磊倪小明刘峰祥
Owner JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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