Rheological modifiers for spray drift control in agrochemical emulsions

US11832610B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Adam L. Grzesiak · Midland, US
• Matthew D. Reichert · West Chester, US
• Christopher J. Tucker · Midland, US
• Stephen L. Wilson · Zionsville, US
• Holger Tank · Zionsville, US
• Sudhakar Balijepalli · Midland, US
• Milton H. Repollet-Pedrosa · Madison, US

Key dates

• Filing date: Apr 23, 2019
• Grant date: Dec 5, 2023
• Expiry date: Dec 25, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N25/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present disclosure provides for an agrochemical emulsion with reduced spray drift that includes an emulsion pre-mix concentrate, an acrylate-based copolymer, and an aqueous based agrochemical composition. The agrochemical emulsion includes 0.05 to 5 weight percent (wt %) of the emulsion pre-mix concentrate, 0.05 to 5 wt. % of the acrylate-based copolymer and 90 to 99.9 wt. % of the aqueous based agrochemical composition. The emulsion pre-mix concentrate includes 40 to 70 wt. % of an alkylene glycol ether, 10 to 40 wt. % of a vegetable-oil, and a surfactant, where the wt. % of the surfactant is 0.5 to 2 times the wt. % of the vegetable-oil wt. %, where the wt. % values are based on the total weight of the emulsion pre-mix concentrate and the wt. % of the alkylene glycol ether, the vegetable-oil and the surfactant total 100 wt. % of the emulsion pre-mix concentrate. The acrylate-based copolymer has a weight average molecular weight of 0.5 to 1.5 million.