Process for the manufacture of viscoses

Details Process for the manufacture of viscoses Process for the manufacture of viscoses

1981-01-02

1982-08-03

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106165, 536 60, C08B 900, C08B 904, C08L 124

Patent

active

043426000

ABSTRACT:
The invention provides a process for the manufacture of viscoses from hemicellulose-containing cellulose pulps without requiring dialysis equipment. By addition of substances having a cross-linking or blocking action on the active groups of hemicellulose to the pulp before or during steeping it is possible to reduce the use of NaOH and CS.sub.2 in the manufacture of viscoses.
The viscoses so obtained are distinguished by good filterability and low content of compounds causing formation of H.sub.2 S in the spinning process.

REFERENCES:
patent: 2993797 (1961-07-01), Dean et al.
patent: 3146116 (1964-08-01), Bates
patent: 4270914 (1981-06-01), Dahl
Chem. Abst. 74:63,328m, 1971.

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