Drift Control Formulations for use with Air Induction Nozzles

Patent metadata

Field	Value
Publication number	US-2017238536-A1
Application number	US-201715439124-A
Country	US
Kind code	A1
Filing date	Feb 22, 2017
Priority date	Feb 22, 2016
Publication date	Aug 24, 2017
Grant date	—

Abstract

A method of spray applying an agricultural pesticide composition through an induction flat spray tip nozzle, wherein the agricultural pesticide composition comprises: a liquid medium; at least one pesticide dissolved or dispersed in the liquid medium; and a guar or a guar derivative, wherein at least a portion of the guar or guar derivative, typically a cationic guar, is in the form of particles and at least a portion of the particles are dispersed in the liquid medium, wherein the induction flat spray tip nozzle comprises: a spray tip nozzle body comprising: a first end capable of being connected to a liquid supply, a venturi compartment; and a discharge orifice.

First claim

What is claimed is:

1 . A method comprising spray applying an agricultural pesticide composition through an induction flat spray tip nozzle, wherein the agricultural pesticide composition comprises:
a liquid medium; at least one pesticide; a guar or a guar derivative, wherein at least a portion of the guar or guar derivative is in the form of particles and at least a portion of the particles are dispersed in the liquid medium; a glycol, a glycol derivative or a combination thereof; and a suspending agent, wherein the induction flat spray tip nozzle comprises a spray tip nozzle body which comprises:
a first end adapted to connect to a liquid supply;
a venturi compartment; and
a discharge orifice,
wherein the agricultural pesticide composition is free or substantially free of ammonium-containing compounds.

2 . The method of claim 1 wherein the at least one pesticide is a combination of (i) dicamba or salt thereof and (ii) glyphosate or a salt thereof.

3 . The method of claim 1 wherein the at least one pesticide is a combination of (i) 2,4-D or salt thereof and (ii) glyphosate or a salt thereof.

4 . The method of claim 1 wherein the glycol derivative is polyethylene glycol.

5 . The method of claim 1 further comprising choline chloride, dibasic potassium phosphate, or a combination thereof.

6 . The method of claim 1 wherein the guar or a guar derivative is a hydroxypropyl guar or a natural guar.

7 . The method of claim 1 wherein the suspending agent is selected from xanthan, fumed silica, or mixtures thereof.

8 . The method of claim 1 wherein the liquid medium is an aqueous liquid medium that comprises water or water and a water immiscible organic liquid, and wherein the composition is in the form of an emulsion, a microemulsion, or a suspoemulsion.

9 . The method of claim 1 wherein the venturi compartment comprises a longitudinally extending throughhole with an inlet opening in fluid communication with an outlet opening and a venturi section interposed and in fluid communication with said inlet opening and said outlet opening.

10 . The method of claim 1 wherein the venturi compartment comprises a first fluid compartment having a first longitudinal axis, a second fluid compartment having a second longitudinal axis, and a venturi section interposed between and in fluid communication with the first fluid compartment and the second fluid compartment.

11 . The method of claim 10 wherein venturi section has a diameter that is less than the diameter of the first compartment and less than the diameter of the second compartment.

12 . The method of claim 1 wherein the guar derivative comprises cationic guar, carboxymethyl guar (CM guar), hydroxyethyl guar (HE guar), hydroxypropyl guar (HP guar), carboxymethylhydroxypropyl guar (CMHP guar), hydrophobically modified guar (HM guar), hydrophobically modified carboxymethyl guar (HMCM guar), hydrophobically modified hydroxyethyl guar (HMHE guar), hydrophobically modified hydroxypropyl guar (HMHP guar), cationic hydrophobically modified hydroxypropyl guar (cationic HMHP guar), hydrophobically modified carboxymethylhydroxypropyl guar (HMCMHP guar), hydrophobically modified cationic guar (HM cationic guar), guar hydroxypropyl trimonium chloride, hydroxypropyl guar hydroxypropyl trimonium chloride.

13 . A method of applying an agricultural pesticide composition the steps of:
contacting at least one pesticide with an adjuvant composition,
wherein the adjuvant composition comprises:
greater than 1.8 wt %, based upon total weight of the adjuvant composition, of an incompletely hydrated water-soluble polymer suspended in a liquid medium;
a hydration inhibitor component comprising a glycol, a glycol derivative, choline chloride, dibasic potassium phosphate or a combination thereof; and
a suspending agent in an amount effective to impart shear thinning properties to the composition;
spray applying a resulting mixture of the at least one pesticide and the adjuvant composition to one or more crops through an induction flat spray tip nozzle, wherein the induction flat spray tip nozzle comprises a spray tip nozzle body which comprises:
a first end adapted to connect to a liquid supply;
a venturi compartment; and
a discharge orifice,
wherein the agricultural pesticide composition is free or substantially free of ammonium-containing compounds.

14 . The method of claim 13 wherein the at least one pesticide is a combination of (i) dicamba or salt thereof and (ii) glyphosate or a salt thereof.

15 . The method of claim 13 wherein the at least one pesticide is a combination of (i) 2,4-D or salt thereof and (ii) glyphosate or a salt thereof.

16 . The method of claim 13 wherein the hydration inhibitor component comprises polyethylene glycol, choline chloride or a combination thereof.

17 . The method of claim 13 wherein the incompletely hydrated water- soluble polymer is a guar or a guar derivative

18 . The method of claim 13 wherein the suspending agent is selected from xanthan, fumed silica, or mixtures thereof.

19 . The method of claim 13 wherein the venturi compartment comprises a longitudinally extending throughhole with an inlet opening in fluid communication with an outlet opening and a venturi section interposed and in fluid communication with said inlet opening and said outlet opening.

20 . The method of claim 13 wherein the venturi compartment comprises a first fluid compartment having a first longitudinal axis, a second fluid compartment having a second longitudinal axis, and a venturi section interposed between and in fluid communication with the first fluid compartment and the second fluid compartment.

21 . The method of claim 20 wherein venturi section has a diameter that is less than the diameter of the first compartment and less than the diameter of the second compartment.

Assignees

• Rhodia Operations

Inventors

• Goyal Rajesh
• Ryan Neal
• Liu Hong
• Shanmuga Krish
• Kisenwether Michael J
• Balastre Marc

Classifications

• B05B7/0425

  without any source of compressed gas, e.g. the air being sucked by the pressurised liquid · CPC title

• B05B1/04

  in flat form, e.g. fan-like, sheet-like · CPC title

• A01N57/12

  containing acyclic or cycloaliphatic radicals · CPC title

• A01N39/04

  Aryloxy-acetic acids; Derivatives thereof · CPC title

• A01N37/40

  having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system · CPC title