UST969003I4 - Controlled release liquid fertilizers - Google Patents
Controlled release liquid fertilizers Download PDFInfo
- Publication number
- UST969003I4 UST969003I4 US05/807,842 US80784277A UST969003I4 US T969003 I4 UST969003 I4 US T969003I4 US 80784277 A US80784277 A US 80784277A US T969003 I4 UST969003 I4 US T969003I4
- Authority
- US
- United States
- Prior art keywords
- oil
- surfactant
- percent
- fertilizer
- liquid
- 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.)
- Pending
Links
- 239000003337 fertilizer Substances 0.000 title abstract 12
- 239000007788 liquid Substances 0.000 title abstract 8
- 238000013270 controlled release Methods 0.000 title abstract 2
- 239000004094 surface-active agent Substances 0.000 abstract 8
- 239000000203 mixture Substances 0.000 abstract 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract 2
- 239000000839 emulsion Substances 0.000 abstract 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 abstract 1
- 239000004254 Ammonium phosphate Substances 0.000 abstract 1
- 239000004114 Ammonium polyphosphate Substances 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 abstract 1
- 235000019289 ammonium phosphates Nutrition 0.000 abstract 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 abstract 1
- 229920001276 ammonium polyphosphate Polymers 0.000 abstract 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 abstract 1
- 238000009472 formulation Methods 0.000 abstract 1
- 239000003350 kerosene Substances 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
- 239000007762 w/o emulsion Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
liquid fertilizers having controlled release properties are prepared from fertilizer solutions and oil-surfactant mixtures. An invert surfactant is dissolved in an oil such as kerosene. The amount of surfactant used can vary over a wide range. Use of between 0.6 and 1.0 percent surfactant in the fertilizer formulation yields fertilizers with acceptable release rates. Liquid fertilizer is slowly added to the oil-surfactant mixture with vigorous agitation causing a water-in-oil emulsion to form. Mixtures containing 80 to 90 percent liquid fertilizer and 10 to 20 percent oil made excellent products.
The final fertilizer product is an invert emulsion containing 80 to 90 percent liquid fertilizer, 10 to 20 percent oil, and 0.6 to 1.0 percent surfactant. The product consists of small droplets of liquid fertilizer solution surrounded by a thin but essential impenetrable oil-surfactant layer. Water slowly dissolves the surfactant from the oil, thus breaking the emulsion and allowing the liquid fertilizer to be released. Ammonium phosphate, ammonium polyphosphate, ammonium nitrate, potassium chloride, uran solutions, and mixtures thereof, may be used as liquid fertilizers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/807,842 UST969003I4 (en) | 1977-06-20 | 1977-06-20 | Controlled release liquid fertilizers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/807,842 UST969003I4 (en) | 1977-06-20 | 1977-06-20 | Controlled release liquid fertilizers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST969003I4 true UST969003I4 (en) | 1978-04-04 |
Family
ID=25197284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/807,842 Pending UST969003I4 (en) | 1977-06-20 | 1977-06-20 | Controlled release liquid fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST969003I4 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993016968A1 (en) * | 1992-02-28 | 1993-09-02 | Norsk Hydro A.S | Method of transport and storage of fertilizer compositions |
| US5451243A (en) * | 1991-07-04 | 1995-09-19 | Kemira Oy | Controlled-release fertilizer composition in the form of a paste |
| US5858055A (en) * | 1997-10-07 | 1999-01-12 | The Lubrizol Corporation | Water-in-oil emulsion fertilizer compositions |
-
1977
- 1977-06-20 US US05/807,842 patent/UST969003I4/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451243A (en) * | 1991-07-04 | 1995-09-19 | Kemira Oy | Controlled-release fertilizer composition in the form of a paste |
| WO1993016968A1 (en) * | 1992-02-28 | 1993-09-02 | Norsk Hydro A.S | Method of transport and storage of fertilizer compositions |
| US5858055A (en) * | 1997-10-07 | 1999-01-12 | The Lubrizol Corporation | Water-in-oil emulsion fertilizer compositions |
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