Moulded bodies comprising of humus-containing plant substrate consolidated with polyurethane/polyurea, a process for producing them and their use in plant cultivation

US6032412A · kind A · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• Ernst Sonderhoff GmbH & Co. KG · DE

Inventors

• Franz-Josef Bohne · Leichlingen, DE
• Martin Brahm · Siegen, DE
• Alberto C. Gonzalez-Dorner · Bassano del Grappa, IT
• Marc Herrmann · Voiron, FR
• Manfred Schmidt · Krefeld, DE
• Franz-Josef Giesen · Rommerskirchen, DE
• Manfred Teichmann · Bischofswerda, DE

Key dates

• Filing date: May 22, 1998
• Grant date: Mar 7, 2000
• Expiry date: May 22, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01G24/30
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Moulded bodies are described which comprise a humus-containing plant substrate consolidated with polyurethane/polyurea, which are obtainable by slurrying a humus-containing plant substrate in water, admixing a liquid NCO prepolymer having a maximum NCO content of 15% by weight which has been produced by the reaction of toluene diisocyanate with a polyether polyol component containing at least one aminopolyether polyol in an amount of 0.5 to 100 mole % with respect to the polyol component, and introducing the mixture thus obtained into a mould and allowing it to solidify. A process for producing these moulded bodies is also described, as is their use as growth media for seedlings in the propagation and raising of plants.