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Macromolecular flame retardant, preparation method and application thereof

A polymer flame retardant and flame retardant technology, applied in the polymer field, can solve the problems of easy hydrolysis, easy migration, and inability to realize environmental protection and flame retardancy, and achieve the effect of good flame retardancy and light stability

Pending Publication Date: 2021-03-12
GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame retardant can not only prevent flaming combustion, but also suppress smoldering; smear and spray on any object, it will only carbonize and not burn when it catches fire; it has good compatibility with materials and can be evenly distributed in the flame retardant materials. Dispersed, and has a good affinity; strong stability, does not affect the physical and technological properties of the added materials; less combustion smoke, no toxic gas, is an environmentally friendly flame retardant, can be added to plastics, paints and rubber, etc. However, it is prepared in the form of compounding, and it will be easily migrated or hydrolyzed during use or storage, and its molecules, decomposition products or dissolved products will enter the environment and pollute the environment, so it is impossible to achieve real environmentally friendly flame retardant

Method used

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  • Macromolecular flame retardant, preparation method and application thereof
  • Macromolecular flame retardant, preparation method and application thereof
  • Macromolecular flame retardant, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0089] A phosphorus-containing flame retardant with a vinyl group, the structure is as follows:

[0090]

[0091](1) Add 2,2,6,6-tetramethylpiperidinamine (15.6g) and dichloromethane (200mL) into a 100mL two-necked flask equipped with a thermometer, stir, and place in an ice bath to cool to 0°C , slowly added a solution of acryloyl chloride (purity 95%, 9.1g) in dichloromethane (20mL), reacted at 0°C for 30min, and then isolated the product;

[0092] (2) 1 mol of the product obtained in step (1) and 1 mol of dimethyl hydroxymethyl phosphite, 100 mL of ethanol, 0.1 mol of sodium hydroxide, and 0.1 g of DMAP are heated to reflux of ethanol, reacted for 3 h, and then added hydrochloric acid until the pH is 7. Remove impurities to obtain the phosphorus-containing flame retardant with the above structure.

[0093] 1 H NMR (CDCl 3 ,400MHz,TMS):δ=7.98(s,1H,-NH-),6.48-6.60(dd,1H,-CH=),6.00-6.20(d,1H,-CH=),5.70-5.80(d ,1H,-CH=),3.66-3.80(s,6H,-O-CH 3 ),3.50-3.60(m,1H,-NH-C H -...

preparation example 2

[0095] A phosphorus-containing flame retardant with a vinyl group, the structure is as follows:

[0096]

[0097] (1) Add 2,2,6,6-tetramethylpiperidinamine (15.6g) and dichloromethane (200mL) into a 100mL two-necked flask equipped with a thermometer, stir, and place in an ice bath to cool to 0°C , slowly add a solution of methacryloyl chloride (purity 95%, 10.5g) in dichloromethane (20mL), react at 0°C for 30min, and then isolate the product;

[0098] (2) 1 mol of the product obtained in step (1) and 1 mol of dimethyl hydroxymethyl phosphite, 100 mL of ethanol, 0.1 mol of sodium hydroxide, and 0.1 g of DMAP are heated to reflux of ethanol, reacted for 3 h, and then added hydrochloric acid until the pH is 7. Remove impurities to obtain the phosphorus-containing flame retardant with the above structure.

[0099] 1 H NMR (CDCl 3 ,400MHz,TMS):δ=8.22(s,1H,-NH-),5.70-5.80(d,2H,CH 2 =),3.60-3.80(s,6H,-O-CH 3 ),3.50-3.60(m,1H,-NH-C H -),2.80-2.90(d,2H,-P-C H 2 -),2.02(s,3H,...

preparation example 3

[0101] A phosphorus-containing flame retardant with a vinyl group, the structure is as follows:

[0102]

[0103] The preparation method is as follows:

[0104] Add 1 mol of diethyl phosphite and 1 mol of acrolein into a three-necked flask equipped with magnetic stirring and a thermometer. Under stirring, control the temperature in an ice-water bath below 5°C, add 1 mol of triethylamine dropwise, gradually raise the temperature to 50°C, and continue After reacting for 0.5h, the phosphorus-containing flame retardant of the above structure was obtained by distillation under reduced pressure.

[0105] 1 H NMR (400MHz, DMSO-d6): δ=5.86-5.90(m,1H,=CH-), 5.27-5.39(m,2H,CH 2 =),5.10-5.12(m,1H,-OH),4.15-4.22(m,1H,-CH-),3.87-4.02(m,4H,-CH 2 -),1.24-1.28(t,6H,-CH 3 ).

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Abstract

The invention provides a macromolecular flame retardant, a preparation method and application thereof. The macromolecular flame retardant comprises a light stabilizer, an initiator, an active agent and a phosphorus-containing flame retardant with a structure shown in a formula I. According to the invention, in a preparation process of a macromolecular flame retardant, under the action of an initiator and an active agent, a phosphorus-containing flame retardant is used as a monomer structure unit for polymerization, so that the finally obtained macromolecular flame retardant has better flame retardance, micromolecule migration and precipitation cannot be generated, safety and environmental protection are truly realized, the obtained macromolecular flame retardant also has light stability byin combination with the light stabilizer, and the specific phosphorus-containing flame retardant and the light stabilizer are matched for use, so that the light stability of the flame retardant can be further improved; and the preparation method of the polymer flame retardant is simple, the raw materials are easy to obtain, the price is low, implementation is convenient, and wide industrial application prospects are achieved.

Description

technical field [0001] This field relates to the field of polymers, and relates to a polymer flame retardant and its preparation method and application. Background technique [0002] Plastic is a synthetic or natural high molecular polymer, which is widely used in all aspects of life because of its good transparency, wear resistance, insulation, coloring, etc., but unfortunately, most All plastics are flammable. In recent years, the frequent occurrence of fires has sounded the alarm for human beings. Flame retardant has become a basic demand for human life or production. At present, the most commonly used flame retardant method is still to add plastics Add a large amount of halogen-containing flame retardants. [0003] Although halogen-containing flame retardants can better improve the flame retardancy of plastics, it is necessary to consider the synergistic effect of plastics and halogen-containing flame retardants, and whether the addition of halogen-containing flame reta...

Claims

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Application Information

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IPC IPC(8): C08F130/02C08L43/02C08L67/02C08K5/3435
CPCC08F130/02C08L43/02C08L67/02C08K5/3435C08L2201/02C08L2201/08
Inventor 潘庆崇
Owner GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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