Method of binding lignocellulosic materials

Details Method of binding lignocellulosic materials Method of binding lignocellulosic materials

B - Operations, Transporting

27

N

18/1010

B27N 3/00 (2006.01) C08L 97/02 (2006.01)

Patent

CA 1101625

TITLE METHOD OF BINDING LIGNOCELLULOSIC MATERIALS INVENTORS Kuo-Cheng Shen David P.C. Fung Louis Calve ABSTRACT OF THE DISCLOSURE A low cost method of binding lignocellulosic materials utilizing ammonium based spent sulfite liquor alone as the binder. Hot pressing a mat comprising ligno- cellulosic material and ammonium spent sulfite liquor at a temperature above 170°C decomposes the spent sulfite liquor. The decomposition products subsequently condense and polymerize in the presence of lignocellulosic materials to produce a composite product. An exterior grade board can be produced under certain operating conditions. Utilizing the lower molecular weight fraction of the liquor provides a more efficient binder.

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