A process for catalyzing synthesis of glyphosate

A glyphosate and process technology, applied in the field of catalytic synthesis of glyphosate by glycine method, can solve the problems of increasing mother liquor production, increasing environmental protection pressure, and affecting economic benefits, achieving quality advantages, small tail gas, and depolymerization The effect of complete response
CN110862414BActive Publication Date: 2022-07-01HUBEI TAISHENG CHEM
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUBEI TAISHENG CHEM
Publication Date
2022-07-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

An organic catalyst for synthesizing glyphosate, the catalyst is an alkoxy compound comprising the first main group alkali metal, and also comprises fresh anhydrous methanol, ethanol and potassium, sodium metal or potassium, sodium anhydrous hydroxide Or a combination of one or more of the alkoxy metal compounds prepared by oxides or prepared by alkali metal reaction, and in the form of alcoholic solutions of the alkoxy metal compounds. In the process of synthesizing glyphosate, paraformaldehyde or methanol solution of formaldehyde is depolymerized after adding organic catalyst, and after the reaction is completed, triethylamine and glycine are added to stir for addition reaction; after the reaction is completed, dimethyl phosphite is added to carry out Condensation reaction, hydrochloric acid is added for hydrolysis after the reaction is completed, and then glyphosate is obtained through crystallization, washing and drying. Using a specific catalyst to improve the reaction speed and reaction selectivity of glyphosate synthesis, the depolymerization reaction speed is fast, the reaction is thorough, the addition reaction selectivity is also high, and the glyphosate product yield is more than 5% higher, which has the advantages of reaction and energy saving. , cost advantage, environmental protection advantage.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of glyphosate production, in particular to a catalytic synthesis method of glyphosate by glycine method. Background technique

[0002] Glyphosate is a high-efficiency, low-toxicity, broad-spectrum, and biocidal herbicide of systemic conduction type. There are two mainstream production methods, one is the production method using iminodiacetic acid (IDA) as raw material, the other is A production method using glycine and alkyl phosphite as raw materials. Most foreign companies, mainly Monsanto, use the iminodiacetic acid method to produce them. The production of glyphosate in my country started in the 1980s. In 1987, Shenyang Research Institute of Chemical Industry launched the glycine-alkyl ester method to synthesize glyphosate with glycine and dimethyl phosphite as the main raw materials. ) from the initial steady 65% ​​to about 75%. Glycine method glyphosate process uses methanol as solvent and triethyl...

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