METHOD FOR PRODUCING SLOW-ACTING FERTILIZERS Russian patent published in 1997 - IPC

Abstract RU 2097367 C1

FIELD: organic chemistry; production of slow-acting fertilizers based on urea and formaldehyde. SUBSTANCE: inventive novelty of proposed method resides in fact that urea and formaldehyde are subjected to condensation in presence of potassic alkali and acid catalyst in isopropyl alcohol reaction medium, alcohol being taken in amount 7-9 parts by volume per 1 part by weight of formaldehyde taken in form of urea-formaldehyde solution. Product thus-obtained is finally dried. EFFECT: new approach to production of urea-formaldehyde fertilizers. 2 cl, 1 tbl

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RU 2 097 367 C1

Authors

Ioganov K.M.

Popovskaja O.A.

Chichkin A.P.

Ljubakov P.N.

Dates

1997-11-27—Published

1992-12-21—Filed