SU570579A1 - Method of obtaining retarded fertilizer - Google Patents
Method of obtaining retarded fertilizerInfo
- Publication number
- SU570579A1 SU570579A1 SU7402029799A SU2029799A SU570579A1 SU 570579 A1 SU570579 A1 SU 570579A1 SU 7402029799 A SU7402029799 A SU 7402029799A SU 2029799 A SU2029799 A SU 2029799A SU 570579 A1 SU570579 A1 SU 570579A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- urea
- fertilizer
- retarded
- obtaining
- organic acids
- Prior art date
Links
Landscapes
- Fertilizers (AREA)
Description
1one
Изобретение относитс к области производства минеральных удобрений и может быть использовано дл получени медленно действующих удобрений на основе мочевины и альдегидов.The invention relates to the field of the production of mineral fertilizers and can be used to produce slow-acting fertilizers based on urea and aldehydes.
Известен способ получени медленно действующего удобрени путем взаимодействи гранулированной или порошкообразной мочевины с насыщенными или ненасыщенными алифатическими альдегидами Сз-С в присутствии органической кислоты, играющей РОЛЬ катализатора, при температуре, не превышающей более, чем на 20°С, температуру кипени альдегида. В качестве органической КИСЛОТЫ используют уксусную, щавелевую, монохлоруксусную, бензосульфокислоты.A known method of producing a slowly acting fertilizer by reacting granular or powdered urea with saturated or unsaturated aliphatic C3-C aldehydes in the presence of an organic acid that plays the ROLE of the catalyst, at a temperature not exceeding 20 ° C, boils the aldehyde. Acetic, oxalic, monochloroacetic, benzosulfonic acids are used as organic acids.
Недостатками известного способа вл ютс ; СЛОЖНОСТЬ технологического процесса, обусловленна наличием стадий подкислени и нейтрализации, использование в качестве катализатора дорогосто щих органических КИСЛОТ в большом количестве, а также больша продолжительность процесса конденсации и нейтрализации.The disadvantages of this method are; The complexity of the process, due to the presence of acidification and neutralization stages, the use of expensive organic acids as a catalyst in large quantities, as well as the long duration of the condensation process and neutralization.
С целью упрощени технологического процесса и удешевлени продукта в качестве катализатора используют двойные соединени мочевины с органическим кислотами. Двойные соединени мочевины с органическими кислотами ввод т в количестве 0,02-0,04%In order to simplify the process and reduce the cost of the product, double compounds of urea with organic acids are used as a catalyst. Double urea compounds with organic acids are introduced in the amount of 0.02-0.04%
от веса мочевины. В качестве двойных соединений мочевины с органическими кислотами примен ют уксуснокислую мочевину, щавелевокислую мочевину, лимоннокислую мочевину , виннокислую мочевину.from the weight of urea. Urea acetate, urea oxalate, urea citrate, urea tartrate are used as urea double compounds with organic acids.
Предлагаемый способ позвол ет упростить технологический процесс за счет исключени стадий подкислени и нейтрализации, а также сокращени продолжительности технологичеекого процесса; удешевить получаемый продукт за счет использовани небольших количеств более дешевого катализатора.The proposed method allows to simplify the process by eliminating the acidification and neutralization steps, as well as reducing the duration of the technological process; reduce the cost of the resulting product by using small amounts of a cheaper catalyst.
Пример 1. 60 г мочевины раствор ют в 50 МЛ формалина ( г/л) при температуре . В полученный раствор ввод т 0,012 г уксуснокислой мочевины (0,02%) от веса мочевины при тщательном неремешивании . Температура реакционной массы поднимаетс до . Врем реакции 15 мин. ПоExample 1. 60 g of urea is dissolved in 50 ML of formalin (g / l) at a temperature. 0.012 g of urea acetate (0.02%) by weight of urea is introduced into the resulting solution with careful unmixing. The temperature of the reaction mass rises to. Reaction time 15 min. By
истечении этого времени загустевшую массу подают на шнек, где происходит сушка и размол продукта до фракции 1-2 мм. Анализ полученного продукта; Моощцнafter this time, the thickened mass is fed to the screw, where the drying and grinding of the product to a fraction of 1-2 mm take place. Analysis of the resulting product; Mooshtsnn
39,3%, Мводорастворимый 62,1%, ИНДСКС уСВО емости 61,1%.39.3%, Water-soluble 62.1%, INDSKS capacity of 61.1%.
Уксуснокислый карбамид синтезируют по реакцииCarbamide acetic acid is synthesized by reaction
СО (NH,), + СНзСООН - СО (NH,), СНзСООН 60 г (1 г-моль) карбамида раствор ют вCO (NH,), + CH3COOH — CO (NH,), CH3COOH 60 g (1 g-mol) of urea is dissolved in
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7402029799A SU570579A1 (en) | 1974-06-04 | 1974-06-04 | Method of obtaining retarded fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7402029799A SU570579A1 (en) | 1974-06-04 | 1974-06-04 | Method of obtaining retarded fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU570579A1 true SU570579A1 (en) | 1977-08-30 |
Family
ID=20586386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7402029799A SU570579A1 (en) | 1974-06-04 | 1974-06-04 | Method of obtaining retarded fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU570579A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6040273A (en) * | 1997-04-09 | 2000-03-21 | Stoller Enterprises, Inc. | Diformylurea and reaction products of urea and carboxylic acids |
| AU737354B2 (en) * | 1996-04-10 | 2001-08-16 | Stoller Enterprises, Inc. | Diformylurea and reaction products of urea and carboxylic acids |
-
1974
- 1974-06-04 SU SU7402029799A patent/SU570579A1/en active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU737354B2 (en) * | 1996-04-10 | 2001-08-16 | Stoller Enterprises, Inc. | Diformylurea and reaction products of urea and carboxylic acids |
| US6448440B1 (en) | 1996-04-10 | 2002-09-10 | Stoller Enterprises, Inc. | Methods for preparing and using diacyl ureas |
| US6710085B2 (en) | 1996-04-10 | 2004-03-23 | Stoller Enterprises, Inc. | Methods for enhancing plant growth using diacyl ureas |
| US7022648B2 (en) | 1996-04-10 | 2006-04-04 | Stoller Enterprises, Inc. | Plant seeds treated with N,N′-substituted ureas |
| US6040273A (en) * | 1997-04-09 | 2000-03-21 | Stoller Enterprises, Inc. | Diformylurea and reaction products of urea and carboxylic acids |
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