Binding lignocellulosic materials

Details Binding lignocellulosic materials Binding lignocellulosic materials

D - Textiles, Paper

21

C

6/47, 154/97, 9/

D21C 11/02 (2006.01) B29J 5/04 (1980.01)

Patent

CA 1146306

ABSTRACT OF THE DISCLOSURE A method of making a thermosetting binder for lignocellulosic materials, utilizing spent sulfite liquor, and a method of making a particleboard product. Spent sulfite liquor treated with sufficient sulfuric acid to provide a lignosulfonic acid content of not less than 0.8 milliequivalent weight of NaOH per gram of spent sulfite liquor solids, makes it possible to make particle- board with press time and physical properties comparable to phenol or urea formaldehyde bonded boards but at considerably reduced material cost.

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