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Hyperbranched intumescent flame retardant and preparation method thereof

An intumescent flame retardant and terminal hydroxyl hyperbranched technology, which is applied in the field of flame retardants, can solve the problems of large addition of hyperbranched intumescent flame retardants and unfavorable cost control, so as to improve flame retardant efficiency and charcoal formation rate, the effect of reducing the amount of addition

Inactive Publication Date: 2015-01-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problem of large addition amount of hyperbranched intumescent flame retardant existing in the prior art, which is not conducive to cost control, the present invention provides a hyperbranched intumescent flame retardant with better flame retardant effect and less addition amount

Method used

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  • Hyperbranched intumescent flame retardant and preparation method thereof
  • Hyperbranched intumescent flame retardant and preparation method thereof
  • Hyperbranched intumescent flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0058] (1) Accurately weigh 6.665 g (0.045 mol) of phthalic anhydride with an electronic balance, measure 30 mL of N,N-dimethylacetamide (DMAc), put it in a beaker with a capacity of 100 mL, and fully dissolve . Add 4.731 g (0.045mol) of diethanolamine to a three-necked flask with a capacity of 500 mL (pay attention to moisture-proof), then fix the three-necked flask on a magnetic stirrer, and add a clean magnet. Put the fully dissolved phthalic anhydride in a constant pressure dropper with a capacity of 100 mL, then place the constant pressure dropper on a three-neck flask, open the cock, and drop it in about half an hour, then react for 3.5 h, that is Made AB 2 monomer;

[0059] (2) First weigh 4.600 g (0.030 mol) of phosphorus oxychloride and place it in a constant pressure dropper; weigh 4.085 g (0.030 mol) of pentaerythritol and place it in a prepared 40 mL In the three-necked flask with ring (nitrogen protection); put the oil bath on the magnetic stirrer, then put the...

Embodiment approach 2

[0064] (1) Accurately weigh 15.552 g (0.105 mol) of phthalic anhydride with an electronic balance, measure 55 mL of N,N-dimethylacetamide (DMAc), place in a beaker with a capacity of 100 mL, and fully dissolve . Add 11.040 g (0.105 mol) of diethanolamine to a three-necked flask with a capacity of 500 mL (pay attention to moisture-proof), then fix the three-necked flask on a magnetic stirrer, and add a clean magnet. Put the fully dissolved phthalic anhydride in a constant-pressure dropper with a capacity of 100 mL, then place the constant-pressure dropper on a three-neck flask, open the cock, and complete the dropwise addition in about 45 minutes, then react for 3.5 hours, that is Made AB 2 monomer;

[0065] (2) First weigh 9.200 g (0.060 mol) of phosphorus oxychloride and place it in a constant pressure dropper; weigh 8.169 g (0.060 mol) of pentaerythritol and place it in a prepared In the three-necked flask (nitrogen protection); put the oil bath on the magnetic stirrer, t...

Embodiment approach 3

[0070] (1) Accurately weigh 33.325 g (0.225 mol) of phthalic anhydride with an electronic balance, measure 85 mL of N,N-dimethylacetamide (DMAc), place in a beaker with a capacity of 100 mL, and fully dissolve . Add 23.657 g (0.225 mol) of diethanolamine to a three-necked flask with a capacity of 500 mL (pay attention to moisture-proof), then fix the three-necked flask on a magnetic stirrer, and add a clean magnet. Put the fully dissolved phthalic anhydride in a constant pressure dropper with a capacity of 100 mL, then place the constant pressure dropper on the three-necked flask, open the cock, and drop it in about 60 minutes, then react for 3.5 hours, that is Made AB 2 monomer;

[0071] (2) First weigh 18.400 g (0.120 mol) of phosphorus oxychloride and place it in a constant-pressure dropper; weigh 16.338 g (0.120 mol) of pentaerythritol and place it in a prepared 40 mL In the three-necked flask (nitrogen protection); put the oil bath on the magnetic stirrer, then put the...

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Abstract

The invention relates to the technical field of fire retardants, in particular to a hyperbranched intumescent flame retardant. Hydroxide radical in hydroxyl-terminated hyperbranched polymer is replaced with a phosphorus containing group which is the phosphorus oxychloride group and the like. Through selection of raw materials for preparation of AB2 monomers and variety of the phosphorus containing group, the char yield of the flame retardant in the flame retarding process is increased, further, compatibility can be improved compared with larger molecular weight and high polymer materials, the flame retardant efficiency of the flame retardant can be improved well, the flame retardant effect is increased, and the additive amount is reduced.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to a hyperbranched intumescent flame retardant and a preparation method thereof. Background technique [0002] Polymer materials have excellent comprehensive properties. Coupled with the continuous development in recent years, their applications in the fields of automobiles, construction, packaging, and daily necessities have increased significantly. At the same time, the disadvantage of flammability of polymers has become a hindrance to the application of polymer materials. a big problem. In recent years, the fire caused by the combustion of polymer materials has become a typical example of important fires in the world, and has increasingly attracted widespread attention from the society. Therefore, the pursuit of materials that are safe, reliable, environmentally friendly and non-toxic, and have excellent performance is what people want. [0003] From the date of the...

Claims

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Application Information

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IPC IPC(8): C08K5/51C07F9/6574C08L75/04
Inventor 寿崇琦矦贵海张宇李培蒋传磊
Owner UNIV OF JINAN
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