Coated fertilizer granules

US6309439A · kind A · utility

Assignee

• K+S AKTIENGESELLSCHAFT · DE

Inventors

• Klaus Horchler von Locquenghien · Schifferstadt, DE
• Karl Engelhardt · Sauerlach, DE
• Eberhard Kleinbach · Ludwigshafen, DE
• Michael Muller · Zwingenberg, DE

Key dates

• Filing date: Sep 15, 2000
• Grant date: Oct 30, 2001
• Expiry date: Sep 15, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C05G5/37
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The coated fertilizer granules are coated with a carboxyl-carrying ethylene copolymer in which the carboxyl groups may also be in the form of their salts, the carboxyl-carrying ethylene copolymer being composed of PA1 a) from 75 to 90% by weight of ethylene and PA1 b) from 10 to 25% by weight of an .alpha.-olefinically unsaturated C.sub.3 -C.sub.8 -alkanecarboxylic acid, and those coated fertilizer granules which contain an active ingredient for crop protection being excepted.