GB869362A - Fertilisers based on urea-formaldehyde resins - Google Patents
Fertilisers based on urea-formaldehyde resinsInfo
- Publication number
- GB869362A GB869362A GB2535858A GB2535858A GB869362A GB 869362 A GB869362 A GB 869362A GB 2535858 A GB2535858 A GB 2535858A GB 2535858 A GB2535858 A GB 2535858A GB 869362 A GB869362 A GB 869362A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- formaldehyde
- mols
- acid
- mol
- 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.)
- Expired
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)
Abstract
An insoluble resin useful as a fertilizer is prepared by reacting, under acid conditions, an aqueous condensate from 1 mol of urea with 1,2-3,5 mols of formaldehyde, with sufficient urea to bring the proportions up to 1,2 - 1,8 mols. of urea per mol. of formaldehyde. The acid conditions may be produced by any of the usual acid or latent acid catalysts for ureaformaldehyde resins, e.g. sulphuric acid or ammonium chloride. The condensation may take place in presence of other fertilizers, e.g. ammonium sulphate, or superphosphate and this other fertilizer may provide the necessary acidity. In the example 2,2 mols of formaldehyde (as formalin) were refluxed with 1 mol urea at a pH of 7,5 for 15 minutes. The pH was adjusted to 4,0 with formic acid and refluxing continued. The pH was then re-adjusted to 7,5 with caustic soda and the solution concentrated in vacuo to 70% solids. Further urea and ammonium sulphate were added and the mixture heated. The precipitate after powdering and drying was a fertilizer suitable for lawns or fairways.ALSO:A fertilizer is produced by reacting under acid condition an aqueous condensate from 1 mol. of urea and 1,2-3,5 mols of formaldehyde, with sufficient urea to bring the total proportion to 1,2 to 1,8 mols. of urea per mol. of formaldehyde. The condensation may take place in the presence of other fertilizers, e.g. ammonium sulphate, superphosphate, some of which, e.g. ammonium sulphate may provide the necessary acidity for the condensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2535858A GB869362A (en) | 1958-08-07 | 1958-08-07 | Fertilisers based on urea-formaldehyde resins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2535858A GB869362A (en) | 1958-08-07 | 1958-08-07 | Fertilisers based on urea-formaldehyde resins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB869362A true GB869362A (en) | 1961-05-31 |
Family
ID=10226379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2535858A Expired GB869362A (en) | 1958-08-07 | 1958-08-07 | Fertilisers based on urea-formaldehyde resins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB869362A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4120685A (en) * | 1974-12-20 | 1978-10-17 | Societa' Italiana Resine S.I.R. S.P.A. | Process for the preparation of urea-formaldehyde condensates to be used as fertilizers |
| EP0095913A2 (en) * | 1982-05-27 | 1983-12-07 | Montedison S.p.A. | A process for preparing fertilizers |
-
1958
- 1958-08-07 GB GB2535858A patent/GB869362A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4120685A (en) * | 1974-12-20 | 1978-10-17 | Societa' Italiana Resine S.I.R. S.P.A. | Process for the preparation of urea-formaldehyde condensates to be used as fertilizers |
| EP0095913A2 (en) * | 1982-05-27 | 1983-12-07 | Montedison S.p.A. | A process for preparing fertilizers |
| EP0095913A3 (en) * | 1982-05-27 | 1984-04-11 | Montedison S.P.A. | A process for preparing fertilizers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB648883A (en) | Improvements in or relating to the flameproofing of cellulosic and protein materials | |
| GB1515821A (en) | Urea-formaldehyde resin adhesive | |
| GB1515324A (en) | Process for treating sewage sludge and fertilizer products thereof | |
| RU2008137638A (en) | LIQUID FERTILIZER WITH HIGH NITROGEN CONTENT | |
| SE7707242L (en) | METHOD OF PREPARATION OF AQUATIC FORMALDEHYDE RESIN SOLUTIONS | |
| CA1322665C (en) | Polymethylene urea fertilizer solution | |
| GB869362A (en) | Fertilisers based on urea-formaldehyde resins | |
| US4381368A (en) | Process for the preparation of urea-formaldehyde resins | |
| US4564667A (en) | Urea-formaldehyde resin manufacture | |
| GB1514646A (en) | Organic anti-corrosive pigment | |
| US3183200A (en) | Preparation of liquid urea-formaldehyde condensates and condensates so produced | |
| US3450659A (en) | Process for the preparation of ureaformaldehyde concentrated solutions having a high content of methylenic linkages | |
| US4895983A (en) | Process for producing methylol urea solution and process for producing slow-releasing nitrogenous fertilizer using the same | |
| GB1041384A (en) | Urea-aldehyde condensate for use as a fertiliser | |
| GB1304718A (en) | ||
| US2600780A (en) | Urea aldehyde resin and process of producing the same | |
| GB789075A (en) | Urea-formaldehyde resin fertilizer compositions | |
| GB1212254A (en) | Formaldehyde treated urea-acetaldehyde polycondensate | |
| GB963786A (en) | Improved method of making phenol modified amino condensation resins | |
| GB866411A (en) | Cationic aminoplast resins | |
| GB1207325A (en) | Process for the production of urea-formaldehyde resins | |
| GB712178A (en) | Improvements in and relating to the production of nitrogenous fertilizers | |
| CN1073933A (en) | Long-acting urea fertilizer with more trace elements and manufacture method | |
| GB811737A (en) | Improvements in or relating to urea-formaldehyde gap-filling adhesive | |
| GB524695A (en) | Manufacture of resin-like condensation products |