Aqueous adjuvant concentrates with improved spray drift properties

Patent metadata

Field	Value
Publication number	US-9750243-B2
Application number	US-201514616407-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Feb 6, 2015
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

An aqueous adjuvant concentrate can be prepared using a formulation including: a. from about 15 to about 45% by weight of a potassium salt chosen among di-potassium phosphate, potassium sulfate, potassium nitrate, tri-potassium citrate, potassium salts of ethylenediaminetetraacetic acid and mixture thereof; b. from about 0.5 to about 6% by weight of at least one surfactant and c. from about 3 to about 9% by weight of a hydroxypropyl tamarind gum; wherein a, b, and c are dissolved into the aqueous adjuvant. The aqueous adjuvant can include other compounds such as ah herbicide.

First claim

What is claimed is:

1. An aqueous adjuvant concentrate comprising:
a. from about 15 to about 45% by weight of a potassium salt chosen among di-potassium phosphate, potassium sulfate, potassium nitrate, tri-potassium citrate, potassium salts of ethylenediaminetetraacetic acid and mixture thereof;
b. from about 0.5 to about 6% by weight of at least one surfactant and
c. from about 3 to about 9% by weight of a hydroxypropyl tamarind gum;

wherein a, b, and c are dissolved into the aqueous adjuvant.

2. The aqueous adjuvant concentrate of claim 1 wherein:
a. is from about 20 to about 35% by weight of a potassium salt chosen among di-potassium phosphate, potassium sulfate, potassium nitrate, tri-potassium citrate, potassium salts of ethylenediaminetetraacetic acid, and mixture thereof;
b. from about 1 to about 4% by weight of at least a surfactant and
c. from about 3 to about 8% by weight of a tamarind gum.

3. The aqueous adjuvant concentrate of claim 1 wherein the potassium salt is a mixture of di-potassium phosphate, potassium nitrate and tri-potassium citrate.

4. The aqueous adjuvant concentrate of claim 1 wherein the surfactant is an anionic surfactant.

5. The aqueous adjuvant concentrate of claim 4 wherein the anionic surfactant is chosen among alkyl sulfosuccinic acids and anionic esters of alkylpolyglycosides.

6. The aqueous adjuvant concentrate of claim 1 wherein the hydroxypropyl tamarind gum has a hydroxypropyl molar substitution of from about 0.1 to about 2.5.

7. The aqueous adjuvant concentrate of claim 6 wherein the hydroxypropyl tamarind gum has a hydroxypropyl molar substitution of from about 0.2 to about 1.0.

Assignees

• Lamberti Spa

Inventors

• Di Modugno Rocco
• Reiss James Dean
• Eidem Bradley
• Langella Valentina
• Riccaboni Mauro
• Floridi Giovanni
• Li Bassi Giuseppe

Classifications

• 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

• A01N25/22

  containing ingredients stabilising the active ingredients · CPC title

• A01N57/20

  containing acyclic or cycloaliphatic radicals · CPC title

• A01N39/02

  Aryloxy-carboxylic acids; Derivatives thereof · CPC title

• A01N37/38

  having at least one oxygen or sulfur atom attached to an aromatic ring system · CPC title