D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 3/02 (2006.01) C08H 8/00 (2010.01) C07H 1/08 (2006.01) C07H 3/06 (2006.01) C08L 97/02 (2006.01) D21C 1/06 (2006.01) D21C 9/18 (2006.01) D21C 11/04 (2006.01)
Patent
CA 2578305
Solid Oligosaccharides and Polysaccharides (SOP) are obtained through the SOP process. Chips or finer particles of raw wood are extracted with a warm alkaline solution at or near ambient pressure in a pulp-mill digester. The alkaline extract is transferred from digester to a holding/stirring tank, and the wood particles in the digester are then pulped as usual. SOP forming upon addition of alcohol to the alkaline extract may be concentrated either by centrifugation or filtration, washed, dehydrated and packaged. The process also enables SOP bleaching. Dry unbleached or bleached SOP can be readily dissolved in water for further processing. Alcohol is recovered by distillation, and residual alkali is returned to the digester for treatment of the next batch of wood. Potential uses of SOP are multi-faceted, e.g., as digestive fibre, gum, paper or paper additive, pharmaceutical bulking agent, well-drilling, ethanol or energy production.
Na
Savidge Rodney Arthur
LandOfFree
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