AT335485B - METHOD FOR PRODUCING A UREA-FORMALDEHYDE DUNGER - Google Patents
METHOD FOR PRODUCING A UREA-FORMALDEHYDE DUNGERInfo
- Publication number
- AT335485B AT335485B AT352875A AT352875A AT335485B AT 335485 B AT335485 B AT 335485B AT 352875 A AT352875 A AT 352875A AT 352875 A AT352875 A AT 352875A AT 335485 B AT335485 B AT 335485B
- Authority
- AT
- Austria
- Prior art keywords
- dunger
- formaldehyde
- urea
- producing
- formaldehyde dunger
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/02—Fertilisers containing urea or urea compounds containing urea-formaldehyde condensates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Fertilizers (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742422238 DE2422238C2 (en) | 1974-05-08 | 1974-05-08 | Process for the production of a urea-formaldehyde fertilizer |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA352875A ATA352875A (en) | 1976-07-15 |
AT335485B true AT335485B (en) | 1977-03-10 |
Family
ID=5914975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT352875A AT335485B (en) | 1974-05-08 | 1975-05-07 | METHOD FOR PRODUCING A UREA-FORMALDEHYDE DUNGER |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT335485B (en) |
CH (1) | CH610288A5 (en) |
DE (1) | DE2422238C2 (en) |
FR (1) | FR2270221B1 (en) |
NL (1) | NL181362C (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1152197B (en) * | 1982-05-27 | 1986-12-31 | Montedison Spa | PROCEDURE FOR THE PREPARATION OF SLOWLY NITROGEN FERTILIZERS |
DE3539631C2 (en) * | 1985-11-08 | 1997-07-31 | Basf Ag | Process for the preparation of oligomethylene urea mixtures |
IT1301970B1 (en) * | 1998-07-30 | 2000-07-20 | Sadepan Chimica S A S Di Savio | PROCEDURE FOR THE FORMULATION OF A STABILIZED NITROGEN FERTILIZER IN LIQUID FORM FOR A NITROGEN RELEASE PROTRACTED OVER TIME. |
EP1195365A1 (en) | 2000-09-21 | 2002-04-10 | Agra Dünger GmbH | Process for preparing methylene-urea polymers |
CN1309685C (en) * | 2002-03-26 | 2007-04-11 | 佐治亚-太平洋树脂公司 | Slow release nitrogen fertilizer |
CN115024188B (en) * | 2022-01-21 | 2024-02-23 | 江苏省农业科学院 | Preparation method of nitrogen slow-release type straw seedling raising substrate tray |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE528582C (en) * | 1929-10-08 | 1931-07-09 | I G Farbenindustrie Akt Ges | Process for the production of crystallized condensation products from formaldehyde and ureas |
-
1974
- 1974-05-08 DE DE19742422238 patent/DE2422238C2/en not_active Expired
-
1975
- 1975-05-07 CH CH587875A patent/CH610288A5/en not_active IP Right Cessation
- 1975-05-07 NL NL7505402A patent/NL181362C/en not_active IP Right Cessation
- 1975-05-07 AT AT352875A patent/AT335485B/en not_active IP Right Cessation
- 1975-05-09 FR FR7514527A patent/FR2270221B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7505402A (en) | 1975-11-11 |
DE2422238C2 (en) | 1987-03-26 |
NL181362B (en) | 1987-03-02 |
FR2270221B1 (en) | 1981-10-09 |
NL181362C (en) | 1987-08-03 |
ATA352875A (en) | 1976-07-15 |
FR2270221A1 (en) | 1975-12-05 |
CH610288A5 (en) | 1979-04-12 |
DE2422238A1 (en) | 1975-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee | ||
ELJ | Ceased due to non-payment of the annual fee |