Process of forming a cellulose product having a high content of

Details Process of forming a cellulose product having a high content of Process of forming a cellulose product having a high content of

1992-05-04

1994-11-22

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 97, D21C 306

Patent

active

053665945

ABSTRACT:
Plant wastes such as rice hulls which are high in cellulose and silica are converted into a slurry of water and a silicate cross-linked cellulose poller by digestion under heat and pressure in the presence of sodium ions and a sulfite. The slurry is treated with conventional foaming agents to form a foamed product expanded in volume which may be formed into any desired shape or size by extrusion, molding or casting. The composition of the product of the conversion process is represented by the formula C.sub.7 H.sub.12 O.sub.7 (OCH.sub.3.2 NaHSiO.sub.3).

REFERENCES:
patent: 1848661 (1932-03-01), Richter
patent: 2962413 (1960-11-01), Hatheway
patent: 3025222 (1962-03-01), Thomsen

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