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Title:
MINERALIZING OF WOOD AND CELLULOSIC MATERIALS
Document Type and Number:
WIPO Patent Application WO/2018/065335
Kind Code:
A3
Abstract:
Provided is a method for mineralizing wood, wooden material and other cellulosic material comprising: i) a first impregnation step, comprising a fist impregnation of wood, wooden material or other cellulosic material with an aqueous solution of potassium methyl siliconate or potassium oxalate, ii) a first drying step, comprising drying of the wood, wooden material or other cellulosic material, iii) a second impregnation step, comprising a second impregnation of wood, wooden material or other cellulosic material with an aqueous solution of calcium chloride or C02 (gaseous or fluidic), and iv) a second drying step, comprising drying of the wood, wooden material or other cellulosic 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 fibres and sklereids). The mineralized products are protected against fungi, improved in their biological resistance, moisture and weather resistance and exhibit a reduced flammability. The products are non-toxic and environmentally safe.

Inventors:
VOLKMER THOMAS (CH)
PICHLIN FRÉDÉRIC (CH)
GYR RAPHAEL STEPHAN (CH)
KAISER PATRICK (DE)
Application Number:
PCT/EP2017/074899
Publication Date:
May 17, 2018
Filing Date:
September 29, 2017
Export Citation:
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Assignee:
BERNER FACHHOCHSCHULE BIEL ARCH HOLZ UND BAU (CH)
International Classes:
B27K3/02; A01N59/06; B27K3/15; B27K3/18; B27K3/52; B27K5/00; B27K5/04; C08L83/02
Foreign References:
JP2001001306A2001-01-09
US20020110677A12002-08-15
SU1541056A11990-02-07
EP2937193A12015-10-28
Other References:
CHANGYU LIU ET AL: "Fabrication of superhydrophobic wood surfaces via a solution-immersion process", APPLIED SURFACE SCIENCE, ELSEVIER, AMSTERDAM, NL, vol. 258, no. 2, 18 August 2011 (2011-08-18), pages 761 - 765, XP028313931, ISSN: 0169-4332, [retrieved on 20110825], DOI: 10.1016/J.APSUSC.2011.08.077
Attorney, Agent or Firm:
RENTSCH PARTNER AG (CH)
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