Non-corrosive nitrification inhibitor polar solvent formulation

Patent metadata

Field	Value
Publication number	US-10173942-B2
Application number	US-201615152396-A
Country	US
Kind code	B2
Filing date	May 11, 2016
Priority date	May 11, 2015
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

This invention relates to stable liquid formulations of the nitrification inhibitor nitrapyrin comprising polar solvents that are stabilized with small amounts of compounds which help to reduce the tendency of polar solutions of nitrapyrin to corrode metal surfaces. Many of the formulations disclosed herein exhibit useful physical, chemical, and bioactive properties including reduced levels of corrosion when in contact with ferrous metals.

First claim

We claim:

1. A formulation, comprising:
2-chloro-6-(trichloromethyl)pyridine, wherein the 2-chloro-6-(trichloromethyl)pyridine is present in the formulation in the range of about 200 to about 400 g/L;
at least one polar solvent, selected from the group consisting of: an N,N-dialkyl fatty acid amide, a ketone, a dibasic ester, an organophosphate compound, and an alkoxybenzene compound wherein the polar solvent comprises between about 40 to about 70 weight percent of the formulation;
at least one corrosion inhibitor, selected from the group consisting of: a liquid epoxy resin; 2, 6-dimethylpyridine; epoxidized linseed oil; 2-amino-2-methyl-1-propanol; methyl nicotinate; methyl isonicotinate; and nicotinamide; wherein each said corrosion inhibitor, comprises about 0.5 to about 2.5 weight percent; and
a second solvent selected from the group consisting of: solvent naphtha, aromatic solvents, mineral oils, kerosene, and xylenes, wherein the second solvent comprises about 5.0 to about 20.0 weight percent of the formulation.

2. The formulation according to claim 1 , wherein the ketone is cyclopentanone or cyclohexanone.

3. The formulation according to claim 1 , wherein the dibasic ester comprises:
a diester of formula (IIa):

a diester of formula (IIb):

and
a diester of formula (IIc):

wherein R 1 and R 2 individually comprise a hydrocarbon having from 1 to about 8 carbon atoms.

4. The formulation according to claim 1 , wherein the organophosphate compound is selected from the group including triethyl phosphate, tri(isobutyl)phosphate, tributoxyethyl phosphate and tris(2-ethylhexyl) phosphate.

5. The formulation according to claim 1 , wherein the alkoxybenzene compound is methoxybenzene or ethoxybenzene.

Assignees

• Dow Agrosciences Llc
• Dow Agrosciences Llc

Inventors

• Dave Hiteshkumar
• Liu Lei
• Williams Alex
• Goyal Rajesh
• Fradette Nicholas
• Moreau Chloe
• Armisen Samantha
• Mayer Kevin

Classifications

• C05G3/00 Primary

  Mixtures of one or more fertilisers with additives not having a specially fertilising activity · CPC title

• C05G3/90

  for affecting the nitrification of ammonium compounds or urea in the soil · CPC title

• C05C11/00

  Other nitrogenous fertilisers · CPC title

• C05G3/0064

  Chemistry & Metallurgy · mapped topic

• C05G3/08 Primary

  Chemistry & Metallurgy · mapped topic