COMPOSITION WITH A HIGH CONCENTRATION OF PHOSPHOR- ACID OR PHOSPHOROTHIOTHRIAMIDE Russian patent published in 2018 - IPC C05G3/08 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to a new composition with a high concentration of phosphorus or phosphorothiothriamide, as well as to a method for its preparation and contact with a carbamide fertilizer. Composition contains: i) phosphoric acid or phosphorothiothriamide in concentration range of 35 % to 50 % by weight, combined with formula I (X=P)(NH₂)₂NR¹R², where X is oxygen or sulfur atom, R¹ and R² independently represent hydrogen atoms, C₁-C₁₂ alkyl, C₃-C₁₂ cycloalkyl, C₆-C₁₄ aryl, C₂-C₁₂ alkenyl, C₂-C₁₂ alkynyl, C₅-C₁₄ heteroaryl, C₁-C₁₄ heteroalkyl, C₂-C₁₄ heteroalkenyl, C₂-C₁₄ heteroalkynyl or C₃-C₁₂ cycloheteroalkyl; ii) glycol or glycol derivative in a concentration range of from about 5 % to about 30 % by weight, wherein the glycol is connected to formula II C_nH_2n(OH)₂, where n is 2–12; iii) liquid amide in a concentration range of from about 20 % to about 50 % by weight, the liquid amide being selected from the group consisting of 2-pyrrolidone, N-(C₁-C₁₂ alkyl)-2-pyrrolidone and an amide of formula R¹CONR²R³, where R¹ is hydrogen atom or C₁-C₄ alkyl, R₂ and R₃ independently represent hydrogen atom or C₁-C₁₂ alkyl, weight percentage ratio of iii) to ii) being greater than 1.0.

EFFECT: composition of phosphorus or phosphorothiothiramide with a high concentration is characterized by physical stability at a temperature of 0 °C; there is essentially no freezing of the composition or crystallization of any solids, for at least 14 days at 0 °C.

13 cl