APPLICATION OF MEDIATORS IN PRODUCTION OF WOOD-FIBRE BOARDS Russian patent published in 2014 - IPC C08L97/02 B27N3/00 B27N3/06 

FIELD: chemistry.

SUBSTANCE: invention relates to wood and/or composite wood materials, in particular to wood-fibre boards, widely used as an initial material in many processing industries. Described is application of a material, selected from the group of phenol derivatives of formula IV, V, VI and their mixture as a mediator in production of lignocellulose-containing moulded articles, in particular the wood-fibre and/or composite materials. Especially preferable materials in the group of phenol derivatives of formula IV are: acetosyringone with R¹, R², R³ = methyl, and syringaldehyde with R¹, R² = methyl, R³ = H; in group of formula V - acetovanilone with R¹, R² = methyl, R³ = H, vanillin with R¹ = methyl, R², R³ = H and ethyl vanillin with R¹ = ethyl, R², R³ = H; in group of formula VI - methylsyringate with R¹, R²=methoxy, R³=methyl and vanillic acid with R¹, R³=H, R²=methoxy. The said material is applied together with, at least, one phenol-oxidising enzyme with ratio, equal ≥ 0.5 unit/ml of enzyme per 1 mmol of the mediator to ≤ 40 unit/ml of enzyme per 1 mmol of the mediator. Also described is a method of manufacturing the lignocellulose-containing moulded articles with application of the said material and the moulded article obtained thereby.

EFFECT: invention provides simplification of technology of the wood-fibre boards with preservation of their physical-chemical parameters.

9 cl, 2 dwg, 1 tbl, 6 ex