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Applications of cyclic phosphorus-nitrogen synergic halogen-free flame retardant

A flame retardant, phosphorus nitrogen technology, applied in the field of new halogen-free flame retardant polymer material synthesis, can solve the problems of affecting the immune and regeneration system, secondary pollution, more smoke and toxic corrosive gases, etc., to achieve market application prospects Wide, good symmetry, good flame retardant effect

Inactive Publication Date: 2014-09-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogenated flame retardants, especially brominated flame retardants, are the first type of flame retardants to be used, but they produce more smoke and toxic and corrosive gases during combustion, which will affect human immunity and regeneration systems, causing secondary damage. Pollution, even strong carcinogenic effect

Method used

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  • Applications of cyclic phosphorus-nitrogen synergic halogen-free flame retardant
  • Applications of cyclic phosphorus-nitrogen synergic halogen-free flame retardant
  • Applications of cyclic phosphorus-nitrogen synergic halogen-free flame retardant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A cyclic phosphorus-nitrogen synergistic halogen-free flame retardant, the name is: 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7-octahydrodioxin Azole diphosphonic acid; the structure of this compound is shown below:

[0043]

[0044] 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7-octahydrodioxadiazole diphosphonic acid is a white or light yellow solid, and the product yield is 35 %~50%, the melting point is 88,7℃, the temperature at the maximum decomposition rate of thermal weight loss is 198.14℃, the percentages of P, N, H, and C in the molecular structure are 20.66%, 18.66%, 7.33% and 32%, respectively , It is suitable as flame retardant or chain extender for polymer materials. Such as figure 1 , figure 2 , image 3 Shown figure 1 Said, 3264cm -1 N-H stretching vibration absorption peak at the place; 2930~2894cm -1 At -CH 2- CH 2 Absorption peak of stretching vibration; 1394cm -1 The stretching vibration absorption peak of -P-NH; 1213.99cm -1 , 1310.41cm -1 , 1004cm -1 They are th...

Embodiment 2

[0048] A cyclic phosphorus-nitrogen synergistic halogen-free flame retardant, the name is: 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7-octahydrodioxin Azole diphosphonic acid; the structure of this compound is shown below:

[0049]

[0050] 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7-octahydrodioxadiazole diphosphonic acid is a white or light yellow solid, and the product yield is 35 %~50%, the melting point is 88,7℃, the temperature at the maximum decomposition rate of thermal weight loss is 198.14℃, the percentages of P, N, H, and C in the molecular structure are 20.66%, 18.66%, 7.33% and 32%, respectively It is suitable as flame retardant or chain extender for polymer materials.

[0051] In a reactor equipped with an argon protection device, a thermometer, and a feeder, add 0.15 mol of phosphorus oxychloride and 0.1 mol of dimethylamine hydrochloride, while adding 150 ml of toluene as a solvent, and 0.25 mol of triethylamine to the feeder Under magnetic stirring, triethylamine was slowl...

Embodiment 3

[0054] A cyclic phosphorus-nitrogen synergistic halogen-free flame retardant, the name is: 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7-octahydrodioxin Azole diphosphonic acid; the structure of this compound is shown below:

[0055]

[0056] 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7-octahydrodioxadiazole diphosphonic acid is a white or light yellow solid, and the product yield is 35 %~50%, the melting point is 88,7℃, the temperature at the maximum decomposition rate of thermal weight loss is 198.14℃, the percentages of P, N, H, and C in the molecular structure are 20.66%, 18.66%, 7.33% and 32%, respectively It is suitable as a flame retardant or chain extender for polymer materials.

[0057] With N 2 In the reactor of the protective device, thermometer, and feeder, add 0.6 mol of phosphorus oxychloride and 0.4 mol of dimethylamine hydrochloride, while adding 300 ml of ethyl acetate as a solvent, and put 0.9 mol of triethylamine in the feeder. Under magnetic stirring, triethylamine was slo...

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Abstract

The invention relates to applications of cyclic phosphorus-nitrogen synergic halogen-free flame retardant, and particularly relates to applications of 2,7-bis(N,N-dimethylamine)-1,6,3,8,2,7-octahydrodioxadiazole diphosphinic acid, belonging to the field of synthesizing a novel halogen-free high polymer material. As a hard segment chain extender, 2,7-bis(N,N-dimethylamine)-1,6,3,8,2,7-octahydrodioxadiazole diphosphinic acid is applied to halogen-free flame-retardant modification of water-based polyurethane emulsion. Cyclic phosphamide flame retardant 2,7-bis(N,N-dimethylamine)-1,6,3,8,2,7-octahydrodioxadiazole diphosphinic acid as the hard segment chain extender is embedded into a water-based polyurethane macromolecular chain; the research shows that due to the addition of the flame retardant, the limit oxygen index of a polyurethane membrane can be improved to a greater extent, the thermal stability of the polyurethane membrane is enhanced, the carbon residue rate of the material after which is decomposed at high temperature is increased, and the usage amount of the flame retardant is reduced.

Description

Technical field [0001] The invention relates to the application of a cyclic phosphorus-nitrogen synergistic halogen-free flame retardant, in particular to a 2,7-bis(N,N-dimethylamino)-1,6,3,8,2,7 -The application of octahydrodioxadiazole diphosphonic acid belongs to the field of synthesis of new halogen-free flame-retardant polymer materials. Background technique [0002] With the development of the polymer material industry, synthetic materials such as plastics, rubber, fibers, etc. are increasingly used in textile, construction, chemical, military, and transportation fields. At the same time, due to the flammability of polymer materials, flame retardant technology has received global attention. [0003] At present, according to the relationship between flame retardants and the flame-retardant substrate, flame retardants can be divided into two categories: additive type and reactive type. The processing technology of the polymer flame-retarded by the additive flame retardant is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/12
CPCC08G18/0823C08G18/12C08G18/6692C08G18/3889
Inventor 罗运军顾丽敏李杰葛震
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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