MINERALIZING OF WOOD OR WOODEN MATERIAL USING CALCIUM ACETATE

• Main Authors: Volkmer, Thomas, Franke, Tom
• Format: Patent
• Language: English; French; German
• Published: 17.04.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS; CHEMISTRY; METALLURGY; NAILING OR STAPLING MACHINES IN GENERAL; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

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.