Agrochemical formulation comprising encapsulated pesticide

US9681659B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Claude Taranta · Aix-en-Provence, FR
• Thomas Bork · Westhofen, DE
• Tina Schroeder-Grimonpont · Rheinzabern, DE
• Britta Katz · Schifferstadt, DE
• Tatjana Sikuljak · Mannheim, DE
• Simon Nord · Münstermaifeld, DE
• Juergen Distler · Alzey, DE
• Richard A. Warriner · Wake Forest, US
• Daniel Bihlmeyer · Apex, US
• James Thomas Wofford · Fuquay-Varina, US

Key dates

• Filing date: Jan 23, 2012
• Grant date: Jun 20, 2017
• Expiry date: Mar 5, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N53/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a aqueous composition containing a suspended pesticide A, and microcapsules comprising a shell and a core, wherein the core contains a pesticide B and an aprotic, polar solvent B, and the shell contains poly(meth)acrylate, which comprises C1-C24 alkyl esters of acrylic and/or methacrylic acid, acrylic acid, methacrylic acid, and/or maleic acid in polymerized form. The invention further relates to a method for preparing said composition comprising the mixing of the pesticide A, water and the microcapsules, to said microcapsule, wherein the core contains the pesticide B and a solvent A, wherein the weight ratio of the pesticide B to the sum of all solvents in the core is from 1:1 to 1:10, and wherein the microcapsule contains up to 7 wt % poly(meth)acrylate, based on the total amount of all pesticides in the core, all solvents in the core, and the poly(meth)acrylate.