EP 3900902 B1 20240417 - MINERALIZING OF WOOD OR WOODEN MATERIAL USING CALCIUM ACETATE
Title (en)
MINERALIZING OF WOOD OR WOODEN MATERIAL USING CALCIUM ACETATE
Title (de)
MINERALISIERUNG VON HOLZ ODER HOLZWERKSTOFF UNTER VERWENDUNG VON CALCIUMACETAT
Title (fr)
MINÉRALISATION DU BOIS OU DE MATÉRIAU EN BOIS À L'AIDE D'ACÉTATE DE CALCIUM
Publication
Application
Priority
CH 4842020 A 20200423
Abstract (en)
[origin: EP3900902A1] Provided is a method for mineralizing wood and wooden material comprising: i) a first impregnation step, comprising a first impregnation of wood or wooden material with an aqueous solution of potassium oxalate, ii) a first drying step, comprising drying of the wood or wooden material, iii) a second impregnation step, comprising a second impregnation of wood or wooden material with an aqueous solution of calcium acetate iv) a second drying step, comprising drying of the wood or wooden material. Due to the novel mineralization method, the water insoluble products of the impregnation steps penetrate the material deeply and are generated in situ within the cells themselves, in the cell walls and pits and between the xylem cells (primarily fibers and sklereids). The mineralized products are moisture and weather resistant, including under very humid conditions, and exhibit reduced flammability. The products are non-toxic and environmentally safe.
IPC 8 full level
B27K 3/02 (2006.01); B27K 3/36 (2006.01); C07C 29/00 (2006.01)
CPC (source: EP)
B27K 3/0214 (2013.01); B27K 3/0292 (2013.01); B27K 3/36 (2013.01); B27K 2240/30 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 21169977 A 20210422