High yield, low cost cellulosic pulp and hydrated gels therefrom

Details High yield, low cost cellulosic pulp and hydrated gels therefrom High yield, low cost cellulosic pulp and hydrated gels therefrom

1975-08-04

1978-05-02

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Mechanical defibration in the presence of heated gas or gas...

162 24, 162 26, 162 28, 162 90, 162187, 106204, 106123LC, D21B 112, D21B 116, D21C 302

Patent

active

040873170

ABSTRACT:
Cellulosic pulp is made in 85% yield by mechanically defiberizing lignocellulose in a steam atmosphere, mixing the resulting aqueous fibrous pulp with a lignocellulose-pulping quantity of finely divided lime, and digesting the pulp in the presence of the lime to a predetermined degree of pulp digestion. The resulting digested fiber can then be mechanically beated in aqueous medium until it is substantially converted to a hydrated cellulosic gel product.

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Rydholm; Pulping Processes p. 351, Interscience Publishers; New York, 1965.
Neale et al "Strengthening Cucalypt Groundwood by Alkalis and Bleaching by Hydrochlorites" Australian Pulp & Paper Ind, Tech. Assoc. Proc. 4:134-66 (1950) Abstract Bulletin Institute of Paper Chemistry vol. 21, No. 8, p. 534.

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