Fire-retarding-type fire inhibiting hard polyether polyol and preparation method thereof

A polyether polyol, rigid technology, applied in the field of preparation of flame retardant grade flame retardant rigid polyether polyol, can solve the problems of tribromostyrene synthesis difficulty, foaming equipment corrosion, thermal instability, etc. Achieve the effects of small flame spread, strong flame penetration and low toxicity

Inactive Publication Date: 2015-01-21
南京金浦锦湖化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, homopolymers and copolymers of vinyl chloride and vinylidene chloride are thermally unstable, and toxic HCl gas is released during the foaming process, which is corrosive to foaming equipment
[0004] In another preparation scheme, tribromostyrene and acrylonitrile are mixed and monopolymerized to prepare polymer polyols. Polyurethane foams made from such polymer polyols have certain smoldering properties, but tribromobenzene Ethylene is difficult to synthesize, expensive and difficult to obtain

Method used

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  • Fire-retarding-type fire inhibiting hard polyether polyol and preparation method thereof
  • Fire-retarding-type fire inhibiting hard polyether polyol and preparation method thereof
  • Fire-retarding-type fire inhibiting hard polyether polyol and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The flame retardant grade flame retardant rigid polyether polyol of the present invention, its main structural formula is:

[0023] ,

[0024] Wherein, the value of m is 2~5, and the value of n is 2~5.

[0025] The above-mentioned flame-retardant grade flame-retardant rigid polyether polyol is prepared from sorbitol, melamine, and phosphorus oxychloride under the action of zinc chloride as a catalyst, and then added to propylene oxide at a certain temperature and pressure.

[0026] The specific operation steps are:

[0027] (1) Add 272g of sorbitol and 400mL of benzene into a 2L reactor equipped with a reflux condensing device, start stirring and dissolving, introduce nitrogen gas, and heat the oil bath to 80°C. Add 250g of phosphorus oxychloride quickly and then slowly within 5h. After the addition is complete, add 1g of diethylamine and reflux for 2h. When no HCl gas is released and the reaction solution becomes clear, add melamine and use diethylamine as the acid...

Embodiment 2

[0032] In this embodiment, the flame-retardant grade flame-retardant rigid polyether polyol has the same molecular formula as in Example 1, and sorbitol, melamine, and phosphorus oxychloride are added to propylene oxide under the action of catalyst zinc chloride, Made under certain temperature and pressure.

[0033] The specific operation steps are:

[0034] (1) Add 300g of sorbitol and 400mL of benzene into a 2L reactor equipped with a reflux condensing device, start stirring and dissolving, introduce nitrogen gas, and heat the oil bath to 80°C. Add 275g of phosphorus oxychloride quickly and then slowly within 5h. After the addition is complete, add 1g of diethylamine and reflux for 2h. When no HCl gas is released and the reaction solution becomes clear, add melamine and use diethylamine as the acid binding agent. Agent, benzene as solvent, heat preservation and reflux. After reacting for 0.5~2H, put the material into the filter tank, cool and filter, wash with dichlorometh...

Embodiment 3

[0037] In this embodiment, the flame-retardant grade flame-retardant rigid polyether polyol has the same molecular formula as in Example 1, and sorbitol, melamine, and phosphorus oxychloride are added to propylene oxide under the action of catalyst zinc chloride, Made under certain temperature and pressure.

[0038] The specific operation steps are:

[0039](1) Add 240g of sorbitol and 400mL of benzene into a 2L reactor equipped with a reflux condensing device, start stirring and dissolving, then introduce nitrogen gas, and heat the oil bath to 80°C. Add 306g of phosphorus oxychloride quickly and then slowly within 5h. After the addition is complete, add 1g of diethylamine and reflux for 2h. When no HCl gas is released and the reaction solution becomes clear, add melamine and use diethylamine as the acid binding agent. Agent, benzene as solvent, heat preservation and reflux. After reacting for 0.5~2H, put the material into the filter tank, cool and filter, wash with dichloro...

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Abstract

The invention discloses a fire-retarding-type fire inhibiting hard polyether polyol and a preparation method thereof. The fire-retarding-type hard polyether polyol provided by the invention is advantaged in fire resistance, temperature resistance, low smoking, low toxicity, and cheap price. The polyether polyol is easy to obtain. A preparation technology of the hard polyether polyol is easy to realize, and is easy to operate.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant grade flame-retardant rigid polyether polyol, which belongs to the field of chemical industry. Background technique [0002] The traditional synthesis of polyether polyols is based on glycerin, sucrose, sorbitol, diethylene glycol, propylene glycol, alcohol amine, ethylenediamine, ethylene glycol and other substances with active hydrogen as the starting agent. Oxygen compound polymerization, neutralization, adsorption, filtration, drying and other processes to obtain polyether polyols of different specifications. The products of this technical route have great weaknesses. They are not flame retardant, flammable, have high smoke generation, and emit toxic gas when burning, which makes people suffocate and forget themselves, and property burns. [0003] In the previous research, a preparation scheme was: use the flame-retardant polymer polyol prepared by copolymerization of two or more m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/6574
Inventor 刘荣
Owner 南京金浦锦湖化工有限公司
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