Flame-retarding compound, flame-retardant prepared thereby and preparation method thereof

A compound and flame retardant technology, which is applied in the field of phosphorus nitrogen intumescent flame retardant compounds, to achieve the effects of improved flame retardant performance, small mechanical properties, and low raw material cost

Active Publication Date: 2011-07-27
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both heterocyclic phosphate and trimeric phosphazene are excellent flame-retardant synthetic monomers, but there is no flame-retardant product that combines the two

Method used

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  • Flame-retarding compound, flame-retardant prepared thereby and preparation method thereof
  • Flame-retarding compound, flame-retardant prepared thereby and preparation method thereof
  • Flame-retarding compound, flame-retardant prepared thereby and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: The flame retardant compound has the following structure:

[0028]

Embodiment 2

[0029] Example 2: The preparation method of the flame retardant compound of Example 1: Add 9 g of phthalimide and 4 g of hexachlorotrimeric phosphazene into a 250 ml three-necked flask with a condenser, use 90 g of DMF as the solvent, and heat to 80 ° C The reaction was 6.5 hours. After the reaction was completed, let stand to cool, wash with water 3 times, 300ml each time, filter under reduced pressure to obtain brown insoluble matter, and dry to obtain A.

[0030] Put A 10g, 4.8g NaOH and 150ml ethanol into a 250ml Erlenmeyer flask, magnetically stir for 4.5 hours, vacuum filter after the reaction, and evaporate the filtrate to obtain white solid B.

[0031] Add 2.4g of B into a 250ml three-necked flask with a condenser tube, and add 11g of 5,5-dimethyl-1,3-dioxo-2-phosphacyclocaprolactoyl chloride, with DMF90g as solvent, in oil at 80°C Reacted in the bath for 4 hours, and filtered under reduced pressure to obtain insoluble C as a white solid.

[0032] The product C was d...

Embodiment 3

[0035] Embodiment 3: the preparation method of the flame retardant prepared by flame retardant compound:

[0036] Put 200g of the flame retardant and 1000g of polypropylene (PP) into a high-speed mixer and mix for 3 minutes; use a co-rotating twin-screw extruder to mix and granulate once, and then dry the pellets at about 80°C for 2 hours. Conventional injection molding.

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PUM

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Abstract

The invention discloses a flame-retarding compound, a flame-retardant prepared thereby and a preparation method thereof. The flame-retardant is prepared by the reaction of phthalimide, phosphonitrilicchloride trimer and 5, 5-dimethyl-1, 3-dioxaphosphorinan-2-amine and has the advantages of high phosphor content and high melting point; the heterocyclic phosphate ester is combined with cyclotriphosphazene, thus improving the molecular weight of the outcome and the compatibility with the polymer product. The flame retardant prepared by the flame-retarding compound is prepared by the reaction of a compound (I) and a polypropylene. The nitrogen content of the flame retardant is 13-15%, the phosphor content thereof is 23-25%, the flame retardant has good thermal stability, and high flame-retarding efficiency, contains no halogens, can be used for preparing flame-retarding macromolecule material, has low cost of raw material, simple and clean preparation process and has no pollution; and the flame retardant improves the flame-retarding performance of the material and affects the mechanic performance less simultaneously. The flame-retarding compound (I) has a structure shown as follow.

Description

technical field [0001] The invention relates to a phosphorus-nitrogen expansion flame retardant compound, a flame retardant and their synthesis method. Background technique [0002] Nowadays, polymer materials are widely used in all aspects of people's production and life, especially in construction, transportation, electronic appliances and daily products, which greatly increases the fire hazard caused by the flammability of such materials. This has led to an increasing demand for flame-retardant and fire-resistant materials worldwide. Many countries have formulated corresponding regulations and policies, which directly promote the research, development, production and application of flame-retardant chemicals. [0003] In the new century, flame retardant research pays more attention to environmental protection issues. People hope that it will not only make the material have a higher flame retardant level, but also be low-toxic to humans, and will not cause secondary harm to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/6593C09K21/12
Inventor 陶文亮李天祥田星解田
Owner WENGFU (GRP) CO LTD
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