Phosphate esters have a wide range of application fields and the industry development trend is improving.

Phosphate ester, also known as orthophosphate, refers to a compound in which the hydrogen atoms of the hydroxyl group in the phosphoric acid molecule are partially or completely replaced by alkyl or aryl groups. Phosphate ester is one of the ester derivatives of phosphoric acid. According to the number of substituted hydrocarbon groups, it can be divided into three categories: phosphate monoester (hydrocarbyl phosphate), phosphate diester (secondary phosphate ester) and phosphate triester (tertiary phosphate ester). Among them, phosphate triester is a neutral compound, and phosphate monoester and phosphate diester are strong acids.

At present, the domestic method for preparing phosphate esters is mainly the catalytic esterification method, which uses hydroxyl-containing organic compounds as surfactants and phosphorylating agents to perform esterification reactions to obtain phosphate esters. The types of phosphorylating agents used in the catalytic esterification method are different, and the types and qualities of the phosphate esters produced are also different. The main phosphorylating agents are phosphorus pentoxide, phosphorus oxytrichloride, phosphorus trichloride, polyphosphoric acid and pyrophosphate. Phosphoric acid etc. Among them, the method of preparing phosphate esters using phosphorus pentoxide as the phosphorylating agent has the characteristics of low production cost, high reaction efficiency, simple and convenient operation, etc., and is currently the mainstream method in the domestic market.

Phosphate ester appears as a light yellow or colorless liquid. It has the characteristics of low volatility, good compatibility, high flame retardancy, good lubricity, strong flame retardancy, and good low temperature resistance. It is mainly used in plasticizers, lubrication, etc. Agents, defoaming agents, phosphorus-containing pesticides, flame-retardant hydraulic oil, nerve gas and other scenarios, it is widely used in pesticides, chemicals, rubber, coatings, machinery and other fields.

Specifically, in the field of plasticizers and flame retardants, the main varieties of phosphates include triphenyl phosphate (TPP), trioctyl phosphate (TOP), tributyl phosphate (TBP), and tricresyl phosphate (TCP). , diphenyl isooctyl phosphate (DPOP), etc., the main application area is tires; in the field of pesticides, phosphate esters are mainly used as important raw materials for phosphorus-containing organic pesticides such as terbutylphosphonate, housefly phosphorus, permethoate, ethyl phosphonate; in In the chemical industry, phosphate ester is an important raw material for hydrogen peroxide and is mainly used in the manufacturing of dihydroterpineol.

In recent years, under the background of rapid development in the application field of phosphate esters, its market demand has continued to increase and its scale has continued to expand. According to the “China Phosphate Industry Market In-depth Assessment and 2022-2026 Investment Feasibility Consultation Report” released by the Industrial Research Center, The domestic phosphate ester market size in 2021 will be approximately 720 million yuan. Domestic phosphate ester companies mainly include Hongxing Chemical, Tianci Materials, Zhenxing Chemical, Wansheng Chemical, Fengtong Chemical, Futong Chemical, Ruishite New Materials, Xinhang Chemical, etc.

Industrial analysts personnel said that phosphate ester, as one of the ester derivatives of phosphoric acid, has a wide range of applications. At the same time, in recent years, it has Against the background of the rapid development of its application fields, the domestic market demand for phosphate esters continues to increase, and the industry development prospects are good. There are currently a large number of domestic phosphate ester companies. In the future, against the background of intensifying market competition, local leading companies will occupy more market shares while continuously improving their technical level and core competitiveness. The concentration of the domestic phosphate ester industry is expected to continue to increase, and industry development The trend is improving.