94317-64-3Relevant articles and documents
Urea-based blend composition and method for the manufacture thereof
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, (2021/07/29)
The invention relates to a solid, particulate, urea-based blend composition comprising a urea-based compound in particulate form, one or more components in particulate form, selected from the group of nitrates, phosphates, sulphates and chlorides, and a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), wherein the urea-based blend composition is further characterized in that it comprises one or more reactive alkaline or alkaline-forming inorganic or organic compounds. The composition according to the invention has been stabilized against the degradation of a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT). The invention further relates to a method for the manufacture of the claimed solid, particulate, urea-based blend composition.
A continuous reaction synthesis N - alkyl thio phosphoric triamide
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Paragraph 0033; 0035; 0036; 0037; 0045; 0048; 0050, (2017/08/25)
The invention discloses a method for synthesizing N-alkylthiophosphoryl triamide through a continuous reaction. The method comprises the following steps: 1, mixing thiophosphoryl chloride with an organic solvent, pre-cooling the obtained mixture in a heat exchanger to -5-0DEG C, mixing the material with an aminated compound pre-cooled to -5-0DEG C, and reacting the obtained mixture in a micro-reactor to obtain N-alkylthiophosphoryl dichloride at the outlet of the reactor; and 2, allowing N-alkylthiophosphoryl dichloride to directly enter an ammoniation reactor, carrying out an ammoniation reaction on N-alkylthiophosphoryl dichloride and ammonia gas, and post-processing after the ammoniation reaction is completed to obtain N-alkylthiophosphoryl triamide. N-alkylthiophosphoryl triamide is synthesized through a micro-reaction technology with high mass transfer and heat transfer efficiency, so conversion of intermittence to continuity is realized, the operating step is simplified, and the reaction yield is improved.
Production method of N-alkyl substituted phosphoric triamide
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Paragraph 0045; 0047, (2017/02/23)
The invention relates to a production method of N-alkyl substituted phosphoric triamide. In an organic solvent, liquid ammonia reacts with alkyl amino phosphorodichloridate. The production method further comprises steps as follows: (1), phosphoric trichloride and alkyl primary amine react in the presence of the organic solvent and an acid-binding agent, and alkyl amino phosphorodichloridate is generated; (2), a reaction liquid in the step (1) directly reacts with the liquid ammonia, temperature returning is performed, and N-alkyl substituted phosphoric triamide is generated. The liquid ammonia is preferably added in the step (2), and a reaction liquid in the step (1) is added for a reaction. According to the production method, a procedure can be intermittent or continuous, an intermediate is not required to be purified, the reaction condition is mild, few byproducts are produced, the yield is good, the purity is high, and the production method is suitable for industrial production.