Organophosphate flame retardant

Organophosphate flame retardant

Organic phosphate ester flame retardant is one of the important development directions of flame retardants in recent years.

The molecular weight of halogen polyphosphate has been studied and developed, and its molecular weight is 611-810, and the phosphorus content is greater than 10%, and it has good flame retardancy and heat resistance.

E four to three quarter, triphenyl phosphite as raw material, sodium hydroxide as catalyst, the nonsolvent ester exchange of one-step synthesis of three seasons of phosphite e four expansion type flame retardant with excellent flame retardant properties. And three bromine phenyl glycidyl ether as flame retardant monomer, and epoxy propane/epoxy chloropropane copolymerization preparation with flame retardant properties of polyether polyols, again with trimethyl phosphite ester exchange reaction and rearrangement reaction, novel polyether polyol was synthesized phosphite (PEPP) flame retardant polymer, is a kind of high thermal stability, flame retardant effect is good, plasticizer and antioxidant function concurrently at the same time a new type of flame retardants.

By 3 c alcohol and epoxy chloropropane and allyl glycidyl ether copolymer and into the low molecular weight of polyether polyols and the reaction of trimethyl phosphite, can synthesize polyether polyol of water-soluble and light curing characteristics phosphite ester flame retardant, synthesis of flame retardant by this method also has anti-aging and plasticizing capability.

Given organophosphate flame retardants for liquid, volatile large, large amount of smoke, and poor thermal stability performance characteristics such as bigger toxicity, so the future research direction should be:

1) developing the large molecular weight hybrid type and gathered in organic phosphate flame retardants, reduce volatile, further improve the thermal stability;

2) development of multiple functions, such as flame retardant, plasticizer, earthquake resistant, waterproof, etc.

3) to develop phosphate flame retardants with multiple functional groups, such as phosphate-retardant, containing halogen, phosphorus and nitrogen containing 3 elements or 2 elements, to further improve the performance of flame retardant;

4) develop a new ring or spiral cyclophosphate flame retardant with high efficiency and low toxicity.

Pentaerythritol phosphate flame retardant can be used for flame retardant of epoxy and unsaturated polyester resin. CN - 1197 as intermediates derived a series of new flame retardants, such as the CN - 1197 was prepared with acrylic acid reaction with cage structure of phosphate ester flame retardant acrylic ester, and ammonium polyphosphate distribution, can be used for the flame retardant polypropylene, the effect is significant.



Tris(2-chloroisopropyl)Phosphate(TCPP)

Cas No:13674 -84-5

 HS Code HS: 29199000

The most important indicator of product:

colorless transparent liquid, moisture ≤ 0.1, Acid value ≤ 0.1, Chroma ≤ 50, the phosphorus content: 9.4 ± 0.5

Raw materials: phosphorus oxychloride and epichlorohydrin.

Belong to several categories of dangerous goods:

Currently Tris(2-chloroisopropyl)Phosphate TCPP general cargo exports are not dangerous.

The product is used for the soft / hard polyurethane foam, with thermal and hydrolytic stability good, especially suitable for ASTME84 (Level 11) foam, with low viscosity unsaturated polyester resin in low temperature application and phenolic plastics at. This product is also used to grab the foam sealant and sheet production. For polyvinyl chloride, polystyrene, phenolic resin, acrylic resin and rubber, coating, flame retardant, also used for soft and hard polyurethane foam, epoxy resin, polystyrene, cellulose acetate, ethyl cellulose tree and phenolic plastics, polyvinyl acetate and gun type foam sealant production. Particularly recommended for rigid polyurethane foam has excellent thermal and hydrolytic stability is particularly suitable for ASTM84 (II), compound for polyurethane foam and unsaturated resin and phenolic plastics.


Wang yuzhong et al. synthesized polyphenylphosphonate diphenyl sulfone (PSPPP), polyphenylphosphonate diphenylphosphonate (PAPPP) and polyphenylphosphonate bisphenol A (PBPPP). PSPPP system using bisphenol S and benzene acid chloride as raw material, use the method of melt polycondensation synthetic, number average molecular weight of more than 104, the product has a high thermal stability, has excellent flame retardant effect on PET;

PAPPP is phenyl phosphonic acyl chloride and amino phenol as raw material, made by diazotization and interfacial polycondensation reaction, the compounds have lower decomposition temperature and high residual volume, with good flame retardancy; PBPPP is made of phenylphosphine dichloride and tetrabromobisphenol A, which are synthesized by melting condensation polymerization. The product has higher molecular weight and better thermal stability, and has good flame retardancy for PET.

Throughout the research and development of flame retardants in recent years and the development situation, as you can see the step by step towards environmental protection, low poison, highlyeffective, muti_function change direction, such as super refining technology, technology, distribution of collaborative technology, microcapsules and macromolecular crosslinking technology will continue to get flame retardant research and development of new technologies such as development, our country should comply with the world development trend of plastics flame retardants, improve the ability to develop innovative, push toward the environmental friendly flame retardant industry in China, low poison, highlyeffective, muti_function change direction.

In terms of annual rate of production, the flame retardants are at the forefront of various kinds of plastic auxiliaries.

Due to the application in the field of flame retardant materials development and the demand of the human survival environment, with multiple flame retardant effect, which involve gaseous phases, condensed phase (flame retardant), and a new type of flame retardant synthetic low smoke, low toxic and flame retardant technology research has become an important research direction in today's flame retardant. Life in the production of building materials in our daily life and occupies more and more important position, but because of its low flammability and ignition point caused by the fire brought heavy losses to people, so the study of flame retardant is necessary.

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