Method for producing aqueous suspension concentrate formulations

US10004224B2 · kind B2 · utility

Assignee

• BASE SE · DE

Inventors

• Wen-Qing Xu · Sarver, US
• Ralph Paulini · Bad Dürkheim, DE
• Michael Krapp · Nattheim, DE
• Kara Benton · Morrisville, US

Key dates

• Filing date: Jan 24, 2014
• Grant date: Jun 26, 2018
• Expiry date: Jan 22, 2035

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 method for producing an aqueous suspension concentrate formulation and novel suspension concentrate formulations of the compound of formula I. The method comprises the steps a) to d) as described hereinafter: a) providing an aqueous slurry of the compound of the formula I containing the compound of formula I in the form of coarse particles dispersed in a solution of the at least one surfactant in water; b) comminuting the coarse particles in the slurry of the compound of formula I to obtain an aqueous suspension of the compound of the formula I, wherein the particles of the compound of the formula I have an volume average particle size in the rage from 3 to 10 μm, as determined by light scattering; c) keeping the suspension of step b) at a temperature in the range of 20 to 95° C., d) subjecting the suspension of step c) to a further comminution to obtain an aqueous suspension of the compound of the formula I, wherein the particles of the compound of the formula I have an volume average particle size of below 3 μm, as determined by light scattering.