JPS55139416A - Production of urea-4c saturated aliphatic aldehyde condensate powder - Google Patents
Production of urea-4c saturated aliphatic aldehyde condensate powderInfo
- Publication number
- JPS55139416A JPS55139416A JP4695179A JP4695179A JPS55139416A JP S55139416 A JPS55139416 A JP S55139416A JP 4695179 A JP4695179 A JP 4695179A JP 4695179 A JP4695179 A JP 4695179A JP S55139416 A JPS55139416 A JP S55139416A
- Authority
- JP
- Japan
- Prior art keywords
- urea
- aldehyde
- formaldehyde
- amount
- production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fertilizers (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
PURPOSE: To enable a large amount of powders having a large particle diameter to be obtained by inhibiting the formation of powders having a small particle diameter, by a method wherein a small amount of formaldehyde is used and reacted in the production of title powder useful as delayed release fertilizer.
CONSTITUTION: A 4C satd. aliph. aldehyde (e.g. isobutyraldehyde) in an amount of not less than 0.4-fold moles of urea and formaldehyde in an amount of 0.03W 0.25-fold moles of urea and of 0.07W0.5-fold moles of the 4C aldehyde, are reacted with solid urea in the presence of an inorg. acid (e.g. sulfuric acid). Urea is continuously supplied from a reservoir 5 via a volumetric feeder 6 to the hopper 4 of a reactor 1. The inorg. acid, formaldehyde and 4C-aldehyde are sprayed from reservoirs 7, 10, 13 on urea by means of dispersion pipes 9, 12, 15. The reaction is carried out with stirring within the reactor 1 by using a stirrer 3. Vapor generated is passed through a pipe 16, liquefied by means of a condenser 17 and fed to the reservoir 13. Product is passed through a discharging means 18 and sifted by a sieve 20.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4695179A JPS55139416A (en) | 1979-04-17 | 1979-04-17 | Production of urea-4c saturated aliphatic aldehyde condensate powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4695179A JPS55139416A (en) | 1979-04-17 | 1979-04-17 | Production of urea-4c saturated aliphatic aldehyde condensate powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55139416A true JPS55139416A (en) | 1980-10-31 |
JPS6157845B2 JPS6157845B2 (en) | 1986-12-09 |
Family
ID=12761592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4695179A Granted JPS55139416A (en) | 1979-04-17 | 1979-04-17 | Production of urea-4c saturated aliphatic aldehyde condensate powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55139416A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5552311A (en) * | 1993-09-14 | 1996-09-03 | University Of Alabama At Birmingham Research Foundation | Purine nucleoside phosphorylase gene therapy for human malignancy |
-
1979
- 1979-04-17 JP JP4695179A patent/JPS55139416A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6157845B2 (en) | 1986-12-09 |
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