Melamine salt flame retardant, flame-retardant polyamide film and preparation method thereof

A technology of flame retardant polyamide and melamine salt, which is applied in the field of melamine salt flame retardant, flame retardant polyamide film and preparation thereof, and can solve the problems of flame retardancy and mechanical properties of flame retardant polyamide film. Comprehensive problems such as poor performance, to achieve the effect of improving compatibility, reducing crystallization ability, and good application prospects

Active Publication Date: 2012-07-04
合肥长阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the defect that the flame retardancy and mechanical properties of the flame retardant polyamide film in the prior art are relatively poor, the present invention provides a melamine ammonium salt flame retardant, a flame retardant film added with the flame retardant Polyamide film and its preparation method

Method used

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  • Melamine salt flame retardant, flame-retardant polyamide film and preparation method thereof

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preparation example Construction

[0064] The preparation method of melamine ammonium salt flame retardant provided by the invention comprises the steps:

[0065] (1) Add the dibasic acid compound and thionyl chloride into the reaction vessel, react at 70-78° C. for 3 to 5 hours to generate acid chloride, and remove the remaining thionyl chloride by distillation under reduced pressure; the dibasic acid compound The molar ratio with thionyl chloride is 0.8~1.0:1;

[0066](2) Esterify the acid chloride obtained in step (1) with tetrahydrofurfuryl alcohol, react at 85-100°C for 1-2 hours, heat up until the solution has reflux, and then react for 3-4 hours. After the reaction is completed, distill under reduced pressure Remove the raw material, pour the mixture into ice water, adjust the pH to 5-7, and obtain the intermediate; taking the molar number of the dibasic acid compound described in step (1) as the basis, the amount of tetrahydrofurfuryl alcohol and the dibasic acid compound The molar ratio is 1~1.2:1;

...

Embodiment 1

[0077] The following figure is the synthesis diagram of the flame retardant 3-(hydroxy-phenyl-phosphoryl)-tetrahydrofurfuryl propionate melamine salt (CEPPTHF-M):

[0078]

[0079] In a four-neck flask equipped with a stirring device, a thermometer, and a dropping funnel, add 1 mole of 3-(hydroxyl-phenyl-phosphoryl)-propionic acid (CEPP) and 1 mole of thionyl chloride respectively, and heat to make CEPP was dissolved, then two drops of dried pyridine were added dropwise, and the temperature was kept at 78°C for 3 hours. After the reaction, distill under reduced pressure and add an appropriate amount of toluene and repeat under reduced pressure to remove thionyl chloride. Add toluene to make it dissolve, then dropwise add 1 mole of tetrahydrofurfuryl alcohol, keep a certain temperature at 96°C, and react for 1.5h, after the addition, raise the temperature until there is reflux, and then react for 3h. After completion of the reaction, the raw material was distilled off under...

Embodiment 2

[0083] The following figure is the synthesis diagram of the flame retardant 3-(hydroxy-naphthyl-phosphoryl)-tetrahydrofurfuryl propionate melamine ammonium salt (CENPTHF-M):

[0084]

[0085] In a four-neck flask equipped with a stirring device, a thermometer, and a dropping funnel, add 0.8 moles of 3-(hydroxy-naphthyl-phosphoryl)-propionic acid (CENP) and 1 mole of thionyl chloride respectively, and heat to make CEPP was dissolved, then two drops of dried pyridine were added dropwise, and the temperature was kept at 70°C for 5 hours. After the reaction, distill under reduced pressure and add an appropriate amount of toluene and repeat under reduced pressure to remove thionyl chloride. Add xylene (DMB) to dissolve it, then dropwise add 0.9 mole of tetrahydrofurfuryl alcohol, keep a certain temperature of 100°C, and react for 1 hour. After completion of the reaction, the raw material was distilled off under reduced pressure. After cooling, the mixture was poured into ice w...

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Abstract

The invention relates to the technical field of polyamide films, in particular to a melamine salt flame retardant, a flame-retardant polyamide film and the preparation method thereof, and aims to solve the problems in the prior art that the overall properties (including flame retardancy and mechanical property) of the flame-retardant polyamide film are poor. The invention provides the melamine salt flame retardant, the flame-retardant polyamide film containing the melamine salt flame retardant, and the preparation method thereof. The flame retardant is a melamine phosphate salt with the tetrahydrofuran ring structure. The addition of the melamine salt flame retardant does not reduce the viscosity of polyamide, the film product has excellent overall properties and is environment-friendly, and the preparation method is simple and favorable to industrial production.

Description

technical field [0001] The invention relates to the technical field of polyamide films, in particular to a melamine salt flame retardant, a flame-retardant polyamide film and a preparation method thereof. Background technique [0002] Biaxially oriented polyamide film (BOPA film) has various good comprehensive properties that other films do not have, including mechanical properties, heat resistance, wear resistance, chemical resistance, dimensional stability, etc. Stretched polyamide film has these excellent characteristics, so it is widely used in automobiles, electrical equipment, mechanical parts, transportation equipment, etc. With the development of intelligence and miniaturization of electronics, electricity, communications, home appliances, and electromechanical equipment, people have begun to study the flame retardancy of biaxially oriented polyamide films. [0003] In the prior art, there are mainly two methods for preparing flame-retardant polyamide films. The fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/5313C08L77/00C07F9/655C07D251/56B29C69/02B29C55/12
Inventor 不公告发明人
Owner 合肥长阳新材料科技有限公司
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