Urea phosphite

• US 20060063675A1
• Filed: 09/17/2005
• Published: 03/23/2006
• Est. Priority Date: 09/17/2004
• Status: Active Grant

• Current Assignee: Lidochem Incorporated
• Original Assignee: Lidochem Incorporated
• Inventors: Dean, Frank William
• Granted Patent: US 8,101,548 B2
• Time in Patent Office: Days
• US Class Current: 504/101
• CPC Class Codes: A01N 47/28 Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< isoureas, isothioureas A01N47/42
• CPC Class Codes: A01N 59/04 Carbon disulfide; Carbon monoxide; Carbon dioxide
• CPC Class Codes: A01N 59/26 Phosphorus; Compounds thereof
• CPC Class Codes: C05B 17/00 Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
• CPC Class Codes: C05C 9/00 Fertilisers containing urea or urea compounds
• CPC Class Codes: C05C 9/005 Post-treatment
• CPC Class Codes: C05G 3/60 Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants

Abstract

Urea Phosphite is a new composition of matter useful as a fertilizer and as a fungicide. It is made by reacting phosphorous acid with urea. Urea Phosphite is characterized by being a liquid produced in an unprocessed reaction, and by having phosphite as a phosphorus source and urea as a nitrogen source. The reaction products may be separated, blended with an admix and spray dried, or, dissolved in water.

Claims

1. A composition of matter formed from reacting a urea compound with a phosphorus acid compound.

2. The composition of matter of claim 1 having the following chemical formula:

3. The composition of matter of claim 1 wherein said urea compound is selected from the group consisting of ureas, thioureas, phenylureas and other substituted ureas.

4. The composition of matter of claim 1 the urea and phosphorous acid are reacted in a molar ratio ranging from about 2:

1 to about 1;

2.

5. A fertilizer comprising the composition of matter of claim 1.

6. The fertilizer of claim 5 that also has fungicidal properties.

7. The fertilizer of claim 5 having phosphite as a phosphorus source and urea as a nitrogen source.

8. The fertilizer of claim 5 further comprising at least one admix selected from the group consisting of:

support comprising organic or mineral material;

surfactant, dispersant, wetting agent, protective colloids, adhesives, thickeners, thixotropic agents, stabilizers, sequestrants, carbon skeleton energy components, macronutrient components, micronutrient components, vitamin cofactor components, complexing agents, growth regulators, gum components, microbialstats, proprionic acid, benzoic acid, sorbic acid, amino acids, and buffers.

9. A fungicide comprising the composition of matter of claim 1.

10. The fungicide of claim 9 further comprising further comprising at least one admix selected from the group consisting of:

support comprising organic or mineral material;

surfactant, dispersant, wetting agent, protective colloids, adhesives, thickeners, thixotropic agents, stabilizers, sequestrants, carbon skeleton energy components, macronutrient components, micronutrient components, vitamin cofactor components, complexing agents, growth regulators, gum components, microbialstats, proprionic acid, benzoic acid, sorbic acid, amino acids, and buffers.

11. A method for making urea phosphite, said method comprising reacting together a urea compound and a phosphorous acid compound.

12. The method of claim 11 wherein said reaction is conducted at a temperature ranging from about 15°

C. and about 140°

C.

13. The method of claim 11 wherein the reaction product is a liquid.

14. The method of claim 11 further comprising blending or reacting the reaction product with an admix for agricultural use.

15. The method of claim 14 wherein said blended product is spray dried.

16. The method of claim 14 wherein said blended product is packaged in liquid or solid form.

17. A method for enhancing plant growth comprising applying to plants, plant seeds, or soils, liquid or a dry solid comprising urea phosphite.

18. The method of claim 17 wherein said urea phosphite is a fertilizer.

19. The method of claim 17 wherein said solid is water soluble and is mixed with an agricultural admix.

20. The method of claim 17 wherein said urea phosphite is a fungicide.

21. The method of claim 17 wherein said urea phosphite is a pH buffer.

22. The method of claim 17 wherein said urea phosphite is a solution pH modifier to enable solubility of mineral salts in the presence of phosphorus compounds.