Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for synthesizing 3-tribromophenoxy cyanurate

A tribromophenoxy, cyanurate technology, applied in organic chemistry and other directions, can solve the problems of strong pungent odor, yellow color, and high total product cost, and achieve increased nitrogen content, promotion of flame retardant effect, and cost reduction. Effect

Inactive Publication Date: 2008-02-27
南通联华阻燃科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional synthetic method: add cyanuric chloride (C 3 N 3 Cl 3 ), after it dissolves, add excess tribromophenol (C 6 h 5 Br 3 0), warming up to a certain temperature, after several hours, the solid product is separated out, and the solid-liquid separation is carried out with a closed centrifuge, and the solid product is dried, pulverized and packaged; generally speaking, the obtained product has a melting point Generally below 225°C, the yield is generally <88%, and the color is yellower, with a strong pungent smell, and the total cost of the final product is also high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] a) add 250L toluene in 1000L kettle;

[0009] b) Add 397kg (1200mol) of tribromophenol, and stir for 30 minutes to fully dissolve it;

[0010] c) Add 53.18 kg (412mol) of cyanuric acid at 50°C;

[0011] d) adding 0.2 kilograms of aluminum trichloride;

[0012] e) heating up to 90°C and keeping the temperature for 6 hours;

[0013] f) rapidly cool down to normal temperature, and separate the solid with a closed centrifuge;

[0014] g) Rinse twice with 1000 kg of water;

[0015] h) Dried to moisture <0.5%, pulverized to an average particle size of 0.5 microns to obtain 384 kg of tris-tribromophenoxy-cyanurate product with a yield of 90%, a melting point of 227°C and a whiteness of 95 %.

Embodiment 2

[0017] a) add 400L toluene in 1000L kettle;

[0018] b) Add 397kg (1200mol) of tribromophenol, and stir for 30 minutes to fully dissolve it;

[0019] c) Add 53.44 kg (414mol) of cyanuric acid at 60°C;

[0020] d) adding 0.22 kilograms of antimony trioxide;

[0021] e) Heating up to 100°C and keeping warm for 8 hours;

[0022] f) rapidly cool down to normal temperature, and separate the solid with a closed centrifuge;

[0023] g) Rinse twice with 1000 kg of water;

[0024] h) Dried to moisture <0.5%, crushed to an average particle size of 10 microns to obtain 388.4 kg of tris-tribromophenoxy-cyanurate product with a yield of 91%, a melting point of 229° C., and a whiteness of 93 %;

Embodiment 3

[0026] a) add 480L toluene in 1000L kettle;

[0027] b) Add 397kg (1200mol) of tribromophenol, and stir for 30 minutes to fully dissolve it;

[0028] c) Add 53.69 kg (416mol) of cyanuric acid at 70°C;

[0029] d) adding 0.24 kg of ammonium fluozirconate;

[0030] e) be heated up to 110 ℃, keep warm for 10 hours;

[0031] f) rapidly cool down to normal temperature, and separate the solid with a closed centrifuge;

[0032] g) Rinse twice with 1000 kg of water;

[0033] h) Dried to moisture < 0.5%, crushed to an average particle size of 25 microns to obtain 392.7 kg of tris-tribromophenoxy-cyanurate product with a yield of 92%, a melting point of 225°C and a whiteness of 94 %.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
whitenessaaaaaaaaaa
Login to View More

Abstract

A process for preparing high-purity 3-tribromophenoxy-cyanurate with low cost features that the cyanruic acid is used as raw material and toluene is used as solvent.

Description

technical field [0001] The invention relates to a synthesis method, in particular to a synthesis method of tris-tribromophenoxy-cyanurate. Background technique [0002] Tri-tribromophenoxy-cyanurate, the chemical name is 2,4,6-tris(2,4,6-tribromophenoxy)-1,3,5 triazine, the English name is 2, 4,6-tris(2,4,6-tribromophenoxy)-1,3,5triazine, CAS number: 25713-60-4, molecular formula C 21 h 6 Br 9 N 3 o 3 , molecular weight: 1067.2, bromine content > 67%, melting point 225-230 ° C, appearance is white crystalline powder, non-toxic, chemically stable, often used as a high-efficiency flame retardant, suitable for HIPS, ABS, PBT, PS, PET, Flame retardant modification in various fields such as PP, epoxy resin, unsaturated resin and rubber. Traditional synthetic method: add cyanuric chloride (C 3 N 3 Cl 3 ), after it dissolves, add excess tribromophenol (C 6 h 5 Br 3 0), warming up to a certain temperature, after several hours, the solid product is separated out, and t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/34
Inventor 丁邦瑞
Owner 南通联华阻燃科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com