Method for reducing the emission of volatile organic compounds made of wood materials, and wood materials

US10596720B2 · kind B2 · utility

Assignee

• SWISS KRONO Tec AG · CH

Inventors

• Norbert Kalwa · Niederheesten, DE
• Dirk Müller · Essen, DE
• Gunnar Thielecke · Bad Liebenzell, DE

Key dates

• Filing date: Sep 23, 2016
• Grant date: Mar 24, 2020
• Expiry date: Dec 5, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L97/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for producing wood materials from lignocellulose-containing crushed products, in particular for producing wooden insulating panels or OSB boards, wherein in order to decrease or reduce the emission of volatile organic compounds (VOC) and, if relevant, very volatile organic compounds (VVOC), including terpenes, acids and aldehydes, said wood materials are treated with a combination of additives during production. According to the invention, the treatment is carried out with a first component made of porous carbon and a second component, a hydrogen sulphite salt. The invention further relates to wood materials that can be obtained using the method according to the invention, having reduced emissions of VOCs, including terpenes, acids and aldehydes. Finally the present invention relates to the use of a combination of additives, formed by a first component with a porous carbon and a second component made of hydrogen sulphide salt, for decreasing or reducing the emission of VOCs from wood materials during or after production thereof from lignocellulose-containing crushed products.