Process for producing paper-making pulps from grasses

Details Process for producing paper-making pulps from grasses Process for producing paper-making pulps from grasses

D - Textiles, Paper

21

C

8/78.1, 9/16.5

D21C 3/00 (2006.01) D21C 3/02 (2006.01) D21C 5/00 (2006.01) D21C 9/10 (2006.01)

Patent

CA 1036304

A B S T R A C T There is disclosed a process for producing paper-making pulps form grasses. The process comprises impregnating a grass in the form of chips with a 0.5 to 6% by weight aqueous solution of alkali at a temperature of 10 to 100°C., compressing the grass to remove an excess aqueous solution so as to provide a wet mass of grass, loosening the wet mass to provide a porous mass of grass, treating the porous mass with an oxygen-containing gas at a temperature of from about 60°C to about 130°C., and then washing the resulting pulp with water and drying it.

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