# US 9,750,243 B2 · Aqueous adjuvant concentrates with improved spray drift properties

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- Number: US 9,750,243 B2
- Document ID: US9750243B2
- Status: Granted
- Kind: B2
- Application number: 14/616,407
- Filed: 2015-02-06
- Published: 2016-08-11
- Granted: 2017-09-05
- Earliest claimed: 2015-02-06
- Assignees: Lamberti SPA
- Applicants: LAMBERTI SpA
- Inventors: Rocco Di Modugno; James Dean Reiss; Bradley Eidem; Valentina Langella; Mauro Riccaboni; Giovanni Floridi; Giuseppe Li Bassi
- Web page: https://patentgrep.com/patent/US9750243B2

## CPC

- A01N 25/24: containing ingredients to enhance the sticking of the active ingredients
- A01N 25/02: containing liquids as carriers, diluents or solvents
- A01N 25/30: characterised by the surfactants
- A01N 37/10: Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof
- A01N 37/38: having at least one oxygen or sulfur atom attached to an aromatic ring system
- A01N 57/20: containing acyclic or cycloaliphatic radicals
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 4)

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

### Claim 6 (depends on 1)

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.

### Claim 7 (depends on 6)

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.