Organic phosphide flame retardant as well as preparation and application thereof

A flame retardant and phosphide technology, applied in the field of organic phosphide flame retardants, can solve the problems of difficult processing, large proportion of ADP volume fraction, decreased flame retardant performance, etc., to achieve multiple physical and chemical properties, excellent flame retardant effect , the effect of improving flame retardancy

Active Publication Date: 2020-06-23
WEIHAI HELEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, the bulk density of alkyl hypophosphite, especially aluminum diethyl hypophosphite (ADP) is low, only 0.3g/cm 3 left and right, making the volume fraction of the added ADP accounted for a large proportion, making it difficult to process
Especially in high-viscosity polyurethane materials, adding more ADP will lead to a sharp increase in torque

Method used

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  • Organic phosphide flame retardant as well as preparation and application thereof
  • Organic phosphide flame retardant as well as preparation and application thereof
  • Organic phosphide flame retardant as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dissolve 122g of diethyl hypophosphorous acid and 132g of hypophosphorous acid (50%) in 500g of water at the same time to obtain solution A, add 52g of aluminum hydroxide to 800g of water and stir to obtain suspension B; add solution A to the end of the speed of 8h dropwise Add it dropwise to the B suspension for reaction to obtain a suspension solution. After the dropwise addition, continue to stir for 10 hours. The entire reaction temperature is controlled at 0°C. Finally, the obtained suspension solution is filtered, washed, dried, and pulverized to obtain a particle size of 0.001 μm~100μm compound salt ADYP.

Embodiment 2

[0043] Dissolve 144g sodium diethyl hypophosphite and 106g sodium hypophosphite monohydrate in 500g water at the same time to obtain solution A, add 444g aluminum sulfate octadecahydrate to 1600g water and stir to obtain solution B; add solution A at the speed of 8h Add dropwise to solution B for reaction to obtain a suspension solution. After the dropwise addition, continue to stir for 10 hours. The entire reaction temperature is controlled at 20°C. Finally, filter, wash, dry, and pulverize the obtained turbid solution to obtain a particle size of 0.001 μm to 100 μm. Compound salt ADYP.

Embodiment 3

[0045] Dissolve 216g of methyl ethyl hypophosphorous acid and 132g of hypophosphorous acid in 1500g of water at the same time to obtain solution A, and dissolve 210g of pseudoboehmite in 1500g of water to obtain solution B; add solution A to the React in solution B to obtain a suspension solution. After the dropwise addition, continue to stir for 6 hours. The entire reaction temperature is controlled at 50°C. Finally, filter, wash, dry, and pulverize the obtained suspension solution to obtain a compound salt with a particle size of 0.001 μm to 100 μm. ADYP.

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Abstract

The invention relates to an organic phosphide flame retardant as well as a preparation method and an application thereof. The technical problem that a halogen-free flame retardant is low in stacking density and true density is solved. The organic phosphide flame retardant is obtained by dropwise adding one or more of dialkyl hypophosphorous acid, monoalkyl hypophosphorous acid, alkoxy hypophosphorous acid and dialkoxy hypophosphorous acid and hypophosphorous acid into at least one of 2-8 valent metal oxide or metal hydroxide for a reaction, or dropwise adding one or more of a dialkyl hypophosphorous acid soluble salt solution, a monoalkyl hypophosphite soluble salt solution, an alkoxy hypophosphorous acid soluble salt solution and a dialkoxy hypophosphorous acid soluble salt solution intoa 2-8 valent metal non-halogen soluble salt solution for the reaction to obtain the product. The method can be widely applied to the technical field of flame retardants.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to an organic phosphorus compound flame retardant and its preparation and application. Background technique [0002] Since Clariant applied for a series of patents on alkyl hypophosphite and alkyl hypophosphite in 1998, alkyl hypophosphite has become one of the most popular halogen-free flame retardants at home and abroad. But at present, the bulk density of alkyl hypophosphite, especially aluminum diethyl hypophosphite (ADP) is low, only 0.3g / cm 3 Left or right, the volume fraction of the added ADP is very large, and the processing is difficult. Especially in high-viscosity polyurethane materials, adding more ADP will lead to a sharp increase in torque, which is difficult to process, and adding less ADP will lead to substandard flame retardancy. Aluminum hypophosphite has relatively high bulk density, high phosphorus content, and good flame retardancy. However, it can ac...

Claims

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Application Information

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IPC IPC(8): C08K5/5313C08K5/5333C08K5/524C07F9/30C07F9/11C07F9/40C08L75/04C08L23/12C08L23/16
CPCC07F9/11C07F9/30C07F9/4075C08K5/524C08K5/5313C08K5/5333C08L23/16C08L2201/02C08L2201/22C08L75/04C08L23/12C08L91/00
Inventor 孟凡旭田仁春杜欢洋许皓亮郑军
Owner WEIHAI HELEN NEW MATERIAL TECH CO LTD
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