Stabilized n-alkyl thiosphoric triamide solvent systems for use in nitrogen fertilizer
View Patent ↗The invention relates to a composition containing a stabilized solvent ketone, ester, or glycol liquid concentrate of at least one N-alkyl thiophosphoric triamide and at least one surfactant. The invention also relates to methods of using the composition.
1. A composition comprising the following components:
i) at least one N-alkyl thiophosphoric triamide,
ii) a solvent which is an aliphatic or aromatic ketone, ester, glycol, ether or organophosphate,
iii) an antifoam agent, and
iv) at least one surfactant selected from the group consisting of:
a) alcohol alkoxylate;
b) alcohol alkoxylate sulfate;
c) alkylphenol alkoxylate;
d) alkylaryl sulfonate;
e) amine oxide;
f) amine;
g) betaine derivatives;
h) carboxylated alcohol or alkylphenol alkoxylate;
i) ethoxylated amine;
j) ethoxylated fatty acid;
k) ethoxylated fatty esters or oils;
l) fatty esters;
m) glycerol esters;
n) phosphate ester surfactants;
o) sarcosine derivatives;
p) silicone-based surfactants;
q) sorbitan derivatives;
r) sucrose and glucose derivatives;
s) sulfates or sulfonates of alkoxylated alkylphenols;
t) sulfates of alcohols;
u) tristyrylphenol alkoxylates;
v) polyethoxylated aliphatic phenol;
w) polymers of ethylene or proplyene oxide; and
x) ethoxylated triglycerides or seed oils.
2. The composition according to claim 1 , wherein the concentration of said N-alkyl thiophosphoric triamide ranges from 1.0 to 60.0% by weight based on the weight of components i), ii), iii) and iv).
3. The composition according to claim 1 , wherein the concentration of said N-alkyl thiophosphoric triamide ranges from 10 to 30.0% by weight based on the weight of components i), ii), iii) and iv).
4. The composition according to claim 1 , wherein the concentration of said N-alkyl thiophosphoric triamide is present in about 20% by weight based on the weight of components i), ii), iii) and iv).
5. The composition according to claim 1 , where the alkyl group in N-alkyl thiosphosphoric triamide is C 2 -C 10 alkyl.
6. The composition according to claim 4 , where the alkyl group in N-alkyl thiosphosphoric triamide is C 4 alkyl.
7. The composition according to claim 4 , wherein the solvent is glycol.
8. The composition according to claim 4 , wherein the solvent is dibasic ester.
9. The composition according to claim 4 , wherein the solvent is propylene glycol.
10. The composition according to claim 4 , wherein the solvent is diethylene glycol.
11. The composition as claimed in claim 1 , wherein the antifoam agent is 2-ethyl hexanol or polydimethylsiloxane.
12. A composition consisting essentially of the formula (I), (II), (III), (IV) or (V),
Formula (I)
N-Butyl Thiophosphorotriamide
20-28
wt. %
Polyethoxylated having 2-20 moles and C4-C12
35.7-39.7%
Alcohols Branched or linear - Alkyl only with no
aryl groups
Dibasic Esters
35.7-39.7
wt. %
Organic Acid
0.1-0.2
wt. %
Dye
about 0.5
wt. %
Polydimethylsiloxane
0.05-0.10%
Formula (II)
N-Butyl Thiophosphorotriamide
20-28
wt. %
Polyethoxylated having 2-20 moles and C4-C12
35.7-39.7
wt. %
Alcohols Branched or linear - Alkyl only with no
aryl groups
Acetophenone
35.7-39.7
wt. %
Organic Acid
0.1-0.2
wt. %
Dye
about 0.5
wt. %
Polydimethylsiloxane
0.05-0.10%
Formula (III)
N-Butyl Thiophosphorotriamide
20-28
wt. %
Polyethoxylated having 2-20 moles and C4-C12
30-50
wt. %
Alcohols Branched or linear - Alkyl only with no
aryl groups
Propylene Glycol
30-50
wt. %
Organic Acid
0.1-.2
wt. %
Blue Dye
about 0.5
wt. %
Polydimethyl siloxane
0.05-.10
wt. %
Formula (IV)
N-Butyl Thiophosphorotriamide
20-28
wt. %
Polyethoxylated having 2-20 moles and C4-C12
30-50
wt. %
Alcohols Branched or linear - Alkyl only with no
aryl groups
Diethylene Glycol
30-50
wt. %
organic Acid
0.1-.2
wt. %
Blue Dye
about 0.5
wt. %
Polydimethyl siloxane
0.05-.10
wt. %
Formula (V)
N-Butyl Thiophosphorotriamide
20-28
wt. %
Polyethoxylated having 2-20 moles and C4-C12
30-50
wt. %
Alcohols Branched or linear - Alkyl only with no
aryl groups
Tributyl Phosphate
30-50
wt. %
organic Acid
0.1-.2
wt. %
Blue Dye
about 0.5
wt. %
Polydimethyl siloxane
0.05-.10
wt. %.
13. The composition as claimed in claim 12 , wherein the antifoam agent is 2-ethyl hexanol or polydimethylsiloxane.
14. A fertilizer which comprises a urea based fertilizer and the composition as claimed claim 1 .
15. The fertilizer as claimed in claim 14 , wherein the urea based fertilizer is a liquid or dry fertilizer.
16. A method of making a fertilizer which comprises mixing ingredients i), ii), iii) and iv) of the composition as claimed in claim 1 with a liquid or dry urea based fertilizer.
17. A process to grow plants which comprises adding the fertilizer as claimed in claim 14 to a soil, water, or other media that is used for the purposes of growing plants.
18. A process to improve the efficacy of nitrogen stabilization provided by an application N-alkyl thiophosphoric triamide treated fertilizer to soil, water, or other media used for the purposes of growing plants which comprises utilizing adding the composition as claimed in claim 1 to a plant.
19. A process for reducing the toxicity of an n-alkyl thiophosphoric triamide formulation which comprises adding the composition as claimed in claim 1 to the n-alkyl thiophosphoric triamide formulation.
20. A process for improving the cold temperature stability of an n-alkyl thiophosphoric triamide formulations formulation which comprises adding the composition as claimed in claim 1 to the n-alkyl thiophosphoric triamide formulation.
21. A process for improving the clean out of containers and equipment used to store and apply n-alkyl thiophosphoric triamide formulations which comprises utilizing the composition as claimed in claim 1 .