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 conduci

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

Example Embodiment

[0057] Implementation method one

[0058] (1) Use an electronic balance to accurately weigh out 6.665 g (0.045 mol) of phthalic anhydride, measure 30 mL of N,N-dimethylacetamide (DMAc), and place it in a beaker with a capacity of 100 mL to fully dissolve it . Add 4.731 g (0.045 mol) of diethanolamine to a 500 mL three-necked flask (pay attention to moisture), 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-necked flask, open the stopcock, and add dropwise in about half an hour, and then react for 3.5 h, that is Make AB 2 monomer;

[0059] (2) First weigh 4.600 g (0, 030mol) of phosphorus oxychloride and place it in a constant pressure dropper; weigh 4.085 g (0.030mol) of pentaerythritol and place it in the pre-prepared 40 mL 1,4-dioxane In a three-necked flask with a ring (nitrogen protection); plac...

Example Embodiment

[0063] Implementation method two

[0064] (1) Use an electronic balance to accurately weigh out 15.552 g (0.105 mol) of phthalic anhydride, weigh out 55 mL of N,N-dimethylacetamide (DMAc), and place it in a beaker with a capacity of 100 mL to fully dissolve it . Add 11.040 g (0.105 mol) of diethanolamine to a three-necked flask with a capacity of 500 mL (pay attention to moisture), then fix the three-necked flask on a magnetic stirrer and add a clean magnet. Place 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-necked flask, open the stopcock, and complete the dropwise addition in about 45 minutes, and then react for 3.5 hours. Make 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 the pre-prepared 80 mL 1,4-dioxane In the three-necked flask...

Example Embodiment

[0069] Implementation method three

[0070] (1) Use an electronic balance to accurately weigh out 33.325 g (0.225 mol) of phthalic anhydride, measure out 85 mL of N,N-dimethylacetamide (DMAc), place it in a beaker with a capacity of 100 mL, and fully dissolve it . Add 23.657 g (0.225 mol) of diethanolamine to a three-necked flask with a capacity of 500 mL (pay attention to moisture), 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-necked flask, open the stopcock, and complete the dropwise addition in about 60 minutes, and then react for 3.5 h. Make 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 the pre-prepared 40 mL 1,4-dioxane In the three-necked flask (...

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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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