Organic phosphonate flame retardant as well as preparation method and application thereof

By preparing organophosphonate flame retardants with ester group structures, the problems of flammability of organic polymers and poor compatibility with traditional flame retardants are solved, achieving high-efficiency flame retardancy, toughening and low corrosion effects, and applicable to a variety of polymer materials.

CN121343243APending Publication Date: 2026-01-16QINGDAO HAIRUN INNOVATION NEW MATERIALS R&D CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202511469939.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-15
Publication Date
2026-01-16

AI Technical Summary

Technical Problem

Existing organic polymer materials are flammable, and conventional phosphorus-based flame retardants have poor compatibility, low flame retardant efficiency, or water solubility that limits their application. Traditional flame retardants are highly corrosive to equipment and affect the electrical properties of materials.

Method used

An organophosphonate flame retardant was synthesized by reacting dialkyl hypophosphite or its salt with haloalkylphosphine oxide under specific conditions to prepare a flame retardant with an ester structure that can synergize with halogen-free flame retardants and can be applied to a variety of polymers.

Benefits of technology

It provides toughening effect, improves flame retardancy and compatibility, reduces equipment corrosion, maintains the mechanical and electrical properties of materials, avoids the use of highly polluting and toxic substances, and has a simple structure and is easy to synthesize.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The organic phosphonate flame retardant prepared by the invention is obtained by reacting dialkyl hypophosphorous acid or dialkyl hypophosphite with halogenated alkyl phosphine oxide in a solvent and then separating and purifying, the synthesis method is simple, the use of high-pollution and high-toxicity substances is avoided, the synthesis structure is clear, and the temperature resistance is not influenced by residues of reactive hydrogen on phosphorus. Meanwhile, the synthesized ester group-containing organic phosphonate flame retardant provides better flame retardant property under the condition of lower additive amount, and the resin has higher retention rate of mechanical property and electrical property due to the low additive amount.
Need to check novelty before this filing date? Find Prior Art