Copolymerized flame-retardant polyamide and preparation method thereof
A technology for copolymerizing flame retardant and polyamide is applied in the fields of copolymerization flame retardant polyamide and its preparation, the preparation of triblock phosphorus-containing copolymer flame retardant polyamide, and the preparation of flame retardant salt, which can solve the problem of long-term flame retardant effect, long-term flame retardant effect and high flame retardant effect. Affecting fabric dyeing properties, uneven distribution and other issues
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Examples
Embodiment 1
[0055]A preparation method of copolymer flame-retardant polyamide 6 / 66, the steps are as follows:
[0056](1) Preparation of flame retardant salt;
[0057](1.1) Combine DOPO derivatives and diamine NH2R2NH2Mix at a molar ratio of 1:2.1, then add 25wt% of the total mass of the system as the reaction solvent, heating up (starting at 25°C) and stirring under nitrogen protection, the stirring speed is 100r / min, DOPO derivative The structural formula of is shown in formula (I), where R1For CH2, Diamine NH2R2NH2Hexamethylene diamine;
[0058]The preparation process of DOPO derivatives is as follows: Put DOPO-HQ and acid binding agent (triethylamine) into a three-necked flask, add solvent (ethanol) to dissolve, and add chloroacetate (methyl chloroacetate) dropwise at 100°C. ), after 14 hours of reaction, the solvent and unreacted chloroacetate are removed by rotary evaporation, the ester bond of the obtained intermediate is hydrolyzed by adding sodium hydroxide in ethanol, then hydrochloric acid is...
Embodiment 2
[0089]A preparation method of copolymer flame-retardant polyamide 6 / 66, the steps are as follows:
[0090](1) Preparation of flame retardant salt;
[0091](1.1) Combine DOPO derivatives and diamine NH2R2NH2Mix at a molar ratio of 1:2.02, and then add 26wt% of the total mass of the system as the reaction solvent. Under nitrogen protection, heat up (starting at 25°C) and stir. The stirring speed is 120r / min. DOPO derivative The structural formula of is shown in formula (I), where R1As (CH2)2, Diamine NH2R2NH2Is decane diamine;
[0092]The preparation process of DOPO derivatives is as follows: Put DOPO-HQ and acid binding agent (triethylamine) into a three-necked flask, add solvent (ethanol) to dissolve, and add chloropropionate (3-chloropropionate) dropwise at 100℃. After 14 hours of reaction, the solvent and unreacted chloropropionate were removed by rotary evaporation, and the ester bond of the obtained intermediate was hydrolyzed by adding sodium hydroxide in ethanol. After adding hydrochlo...
Embodiment 3
[0114]A preparation method of copolymer flame-retardant polyamide 6 / 66, the steps are as follows:
[0115](1) Preparation of flame retardant salt;
[0116](1.1) Combine DOPO derivatives and diamine NH2R2NH2Mix in a molar ratio of 1:2.15, and add 28wt% of the total mass of the system as the reaction solvent. Under nitrogen protection, heat up (starting at 25°C) and stir. The stirring speed is 115r / min. DOPO derivative The structural formula of is shown in formula (I), where R1As (CH2)3, Diamine NH2R2NH2Is propylene diamine;
[0117]The preparation process of DOPO derivatives is as follows: put DOPO-HQ and acid binding agent (triethylamine) into a three-necked flask, add solvent (ethanol) to dissolve, and add chlorobutyrate (4-chlorobutane) dropwise at 100℃. After the reaction for 14 hours, the solvent and unreacted chlorobutyrate are removed by rotary evaporation, and the ester bond of the obtained intermediate is hydrolyzed by adding sodium hydroxide in ethanol. After adding hydrochloric aci...
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Abstract
Description
Claims
Application Information
- IPC
- C08G69/42
- CPC
- C08G69/42
- Inventors
- 肖茹; 郑裕磊