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

A kind of imidazole pyrophosphate flame retardant and preparation method thereof

A technology of flame retardant and flame retardant nylon, which is applied in the field of phosphorus nitrogen flame retardants, can solve problems such as flammability, achieve the effects of improving flame retardant efficiency, simple and practical preparation method, and improving mechanical properties

Active Publication Date: 2022-05-31
JIANGSU JICUI ADVANCED POLYMER MATERIAL RES INST CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polymer materials are widely used in various fields, but they are extremely flammable

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of imidazole pyrophosphate flame retardant and preparation method thereof
  • A kind of imidazole pyrophosphate flame retardant and preparation method thereof
  • A kind of imidazole pyrophosphate flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 10 kilograms of 85% phosphoric acid solution to the reaction kettle, the rotating speed is raised to 60rmp, and the temperature is raised to 100°C. The imidazole saturated aqueous solution was added by spraying, wherein the imidazole content was 12.25 kg. After 1 hour of reaction, the mixture was distilled under reduced pressure to remove water to obtain 20.5 kg of white solid of imidazolium phosphate. The imidazolium phosphate salt was added to the vacuum kneader, the rotation speed was increased to 50 rpm, replaced with nitrogen for more than three times, the temperature was raised to 280° C., and the reaction was carried out for 3 hours to obtain the imidazole pyropolyphosphate.

Embodiment 2

[0042] Add 10 kilograms of 85% phosphoric acid solution to the reaction kettle, the rotating speed is raised to 60rmp, and the temperature is raised to 100°C. The imidazole saturated aqueous solution was added in a spraying manner, wherein the imidazole content was 12.25 kg, and the pH of the solution was regulated to 5-6 to stop adding the imidazole saturated aqueous solution. After reacting for 1 hour, the mixture was distilled under reduced pressure to remove water to obtain 22.7 kg of a white solid of imidazolium phosphate. The imidazolium phosphate salt was added to the vacuum kneader, the rotation speed was increased to 50 rpm, replaced with nitrogen for more than three times, the temperature was raised to 280° C., and the reaction was carried out for 3 hours to obtain the imidazole pyropolyphosphate.

Embodiment 3

[0044] Add 10 kilograms of 85% phosphoric acid solution to the reaction kettle, the rotating speed is raised to 60rmp, and the temperature is raised to 100°C. The imidazole saturated aqueous solution was added in a spraying manner, wherein the imidazole content was 12.25 kg, and the pH of the solution was regulated to 5-6 to stop adding the imidazole saturated aqueous solution. After reacting for 1 hour, the mixture was distilled under reduced pressure to remove water to obtain 23.1 kg of a white solid of imidazolium phosphate. The imidazolium phosphate salt was added to the vacuum kneader, the rotating speed was increased to 50 rpm, replaced with nitrogen for more than three times, the temperature was raised to 300° C., and the reaction was carried out for 1.5 hours to obtain the imidazole pyropolyphosphate.

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

No PUM Login to View More

Abstract

The invention discloses an imidazole pyrophosphate flame retardant and a preparation method thereof. In the reaction device, phosphoric acid is mixed with imidazole or its derivatives, and after reaction, imidazolium phosphate is obtained. Imidazolium phosphate is dehydrated under an inert atmosphere or in a high-boiling solvent to prepare imidazole pyrophosphate, and the reaction temperature is 250°C-300°C. Imidazole pyrophosphate is a new type of phosphorus-nitrogen synergistic environmental protection flame retardant. The imidazole ring is not only a nitrogen source provider, but its fused ring structure can effectively induce carbon formation and improve the flame retardant efficiency. The imidazole pyrophosphate has high cost performance, and the preparation method is simple and practical, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of phosphorus-nitrogen flame retardants, and particularly designs a pyropolyphosphoric imidazole flame retardant and a preparation method thereof. Background technique [0002] Polymer materials are widely used in various fields, but they are extremely flammable. Flame retardants can effectively inhibit the flammability of polymer materials and reduce the risk of fire. Early halogen-containing flame retardants were widely used, but with the improvement of environmental protection requirements, the amount of halogen-free flame retardants increased year by year and became the development trend of flame retardants. Phosphorus-nitrogen flame retardants have excellent performance among halogen-free flame retardants due to the synergistic effect of phosphorus-nitrogen. However, there are few types of phosphorus-nitrogen flame retardants on the market, mainly ammonium polyphosphate and melamine polyphosphate. SUMMARY OF ...

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): C08K3/32C08K5/3445C08L77/06C08L23/06C08K13/04C08K7/14C08K13/06C08K9/08C07D233/58C07D233/84
CPCC08L77/06C07D233/58C07D233/84C08L2201/02C08J5/08C08J5/10C08K2003/321C08L2201/22C08L23/26C08K9/08C08K7/14C08K5/3445C08K3/32Y02P20/52
Inventor 闻辉刘渊吴建国陈荣
Owner JIANGSU JICUI ADVANCED POLYMER MATERIAL RES INST CO LTD
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