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Preparation method and application of phosphorus-nitrogen synergistic flame-retardant polymer polyol

A synergistic flame retardant and polymer technology, applied in the field of polyurethane synthetic materials, can solve the problems of poor flame retardant effect, easy loss, uneven distribution of flame retardants, etc., and achieve good flame retardant effect, low smoke generation, and excellent flame retardant performance effect

Active Publication Date: 2021-07-02
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the prior art that the polyurethane foam is easy to burn, and the additive flame retardant is unevenly distributed, easy to lose, and has poor flame retardant effect, the invention provides a method for preparing a phosphorus-nitrogen synergistic flame-retardant polymer polyol , the prepared flame retardant polymer polyol has high solid content, low viscosity, high phosphorus and nitrogen content, and the polyurethane foam prepared with flame retardant polymer polyol has good flame retardant effect

Method used

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  • Preparation method and application of phosphorus-nitrogen synergistic flame-retardant polymer polyol

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Effect test

Embodiment 1

[0036]In a nitrogen atmosphere, 115.8 g of hexachlorocyclic triaphoonitrile was dissolved in 579 g of tetrahydrofuran, and 201 g of triethylamine and 78 g n-propylene were added to the above solution, reacted at -50 ° C for 10 h; then add 40 g ethylenediamine to In the solution, the reaction was reacted at 50 ° C, and finally the colorless and transparent solution was obtained, and the phosphazene compound of the white solid state was distilled off at high temperatures.

[0037] 157 g of phosphazene compound and 43 g of terealdehyde were added to 800 g of polyether polyol 1, reacted at 80 ° C for 5 h; then at a pressure of -0.098 mPa ~ -0.08MPa, the temperature was 110 ° C to remove empty removal The residual monomer obtained a phosphorus nitric azurized to flame retardant polymer polyol of 53 mP · S / 25 ° C.

Embodiment 2

[0039] In a nitrogen atmosphere, 156.7 g of hexachlorocyclic triaphoonitrile was dissolved in 784 g of dioxane, 213 g of pyridine and 98 g n-butylamine were added to the above solution, reacted at -20 ° C for 5 h; then 100 g 1, 3-propanediamine was added to the solution, reacted at 30 ° C for 20 h, and finally filtered to obtain a colorless and transparent solution, and the phosphazene compound of the white solid state was distilled at high temperatures.

[0040] 231 g of a phosphate nitrile compound and 69 g of hexaraldehyde were added to 700 g of polyether polyol 1, reacted at 100 ° C for 3 h; then at a pressure of -0.098 MPa ~ -0.08MPa, the temperature was 110 ° C to remove empty removal residual removal The monomer obtained a phosphorus nitric azozine co-flame retardant polymer polyol of 2371 mP · S / 25 ° C.

Embodiment 3

[0042] In a nitrogen atmosphere, 245.5 g of hexachlorocyclic triaphoonitrile was dissolved in 1227 g of acetone, 427.5 g of triethylamine and 127 g of dimethylamine were added to the above solution, reacted at -10 ° C for 4 h; then 124 g 1, 4-butrtalamine was added to the solution, reacted at 50 ° C for 10 h, and finally filtered to obtain a colorless and transparent solution, and the phosphazene compound of the white solid state was distilled at high temperatures.

[0043] 332 g of a phosphate nitrile compound and 68 g of glutaraldehyde were added to 600 g of polyether polyol 2, reacted at 50 ° C for 10 h; then at a pressure of -0.098 mPa ~ -0.08 MPa, the temperature was 120 ° C to remove the residual removal The monomer obtained a phosphorus nitric azozozide obtained by viscosity 5830 mP · S / 25 ° C.

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Abstract

The invention relates to a preparation method and application of phosphorus-nitrogen synergistic flame-retardant polymer polyol. The synthesis method comprises the following specific synthesis steps: dissolving phosphonitrilic chloride trimer into an organic solvent in a nitrogen atmosphere, adding an acid-binding agent and monoamine, reacting for a period of time, adding diamine into the solution, heating, reacting, filtering to obtain a colorless and transparent solution, and distilling at high temperature to obtain a white solid state phosphazene compound; and adding the phosphazene compound and polyaldehyde into polyether polyol, reacting for a period of time at high temperature, and removing residual polyaldehyde to obtain milk white polymer polyol. The prepared flame-retardant polymer polyol is high in solid content, low in viscosity and high in phosphorus and nitrogen content, polyurethane foam prepared from the flame-retardant polymer polyol is good in flame-retardant effect, the oxygen index reaches about 30%, and the smoke amount is low during combustion.

Description

Technical field [0001] The present invention belongs to the field of polyurethane synthesis, and more particularly to a method of preparing a phosphorus nitrogen azein flame retardant polymer polyol and an application thereof in a polyurethane foam. Background technique [0002] Polyurethane foam is widely used in automobiles, ships, aircraft, furniture and other fields, but due to low polyurethane foam indices, it is easy to combust, and release a large amount of toxic gases, bringing a huge harm to people's life and property safety, so research and development Polyurethane foam materials with flame retardant functions have important significance. [0003] The currently used flame-retardant method is an element that has a flame retardant function such as phosphorus, nitrogen, halogen or the like in the raw material polyether polyol of polyurethane foam, mainly divided into two types of addition and reactive type. The addition is to add a flame retardant containing flame retardan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00C08G18/64C08G18/48C08G101/00
CPCC08G81/00C08G18/6461C08G18/48C08G18/81C08G2101/00
Inventor 姜明秦承群李付国刘洋刘佳奇隋美玉李传亮
Owner WANHUA CHEM GRP CO LTD
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