US 2011/0237713 A1 · METHOD FOR REDUCING THE EMISSON OF ALDEHYDES AND VOLATILE ORGANIC COMPOUNDS OF WOOD MATERIAL

Abstract

The present invention relates to a method for the production of wood material made of fragmentation products containing lignocelluloses, wherein these wood materials have a reduced emission of volatile organic compounds, aldehydes, particularly formaldehyde. Specifically, the invention relates to methods for the production of wood materials having reduced emission of volatile organic compounds and aldehydes, wherein a certain combination of compounds is utilized in order to prevent the emission of volatile organic compounds and aldehydes, particularly formaldehydes, from the produced wood material. The present invention further relates to wood material that can be produced according this method, particularly OSB panels, particle board, and MDF panels. Finally, the present invention provides compositions suitable in the treatment of wood material to reduce the emission of aldehydes, particularly formaldehyde and volatile organic compounds.

Claims22

Dependent claims

A method for the production of wood-base materials from lignocellulose, comprising:

provision of lignocellulose-containing comminution products;
provision of adhesive;
mixing of the lignocellulose-containing comminution products with the adhesive;
pressing of the mixture with heat treatment, wherein emission of volatile organic compounds (VOC) and formaldehyde, a combination of at least in each case one component which are selected from i) and ii) below, having a buffer capacity, is furthermore added to the comminution products before the pressing and after defibration or chipping, optionally with further addition of at least one component from the groups iii) and iv) below, the groups i) to iv) being:
i) hydrogen sulfite salts,
ii) sulfite salts,
iii) ureas or urea derivatives, and
iv) alkali metal, alkaline earth metal or ammonium hydroxides.

5 more elements

Dependencies are inferred from the claim text.

Method for reducing the emisson of aldehydes and volatile organic compounds of wood material

Life of this patent

Method for reducing the emisson of aldehydes and volatile organic compounds of wood material

Life of this patent

Abstract

Claims22