AN IMPROVED VISCOSE MAKING PROCESS AND FIBRES THEREFROM

AN IMPROVED VISCOSE MAKING PROCESS AND FIBRES THEREFROM

This application discloses a process for improving cellulose content in alkali cellulose by pressing out excess alkali from the slurry of suspended fibres from sodium hydroxide solution without increase in knots, bulk densi* or hard patches. The alkaline-cellulose so produced contains 38 - 45% cellu...

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Bibliographische Detailangaben
Hauptverfasser: RAJEEV KUMAR SHARMA, KISHORE SHOUCHE, ADITYA NARAYAN SHRIVASTAVA, PRAVEEN SURANGE
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:This application discloses a process for improving cellulose content in alkali cellulose by pressing out excess alkali from the slurry of suspended fibres from sodium hydroxide solution without increase in knots, bulk densi* or hard patches. The alkaline-cellulose so produced contains 38 - 45% cellulose and alkali to cellulose ratio gets reduced to 0.33 - 0.41. The increase in cellulose content increases productivity of the xanthator. The reduction in alkah to cellulose ratio further helps to reduce carbon di sulphide consumption during xanthation by 15 - 30% without deteriorating viscose quality.The fibre so produced is having comparable properties with fibres obtained from of conventional process or slurry steeping process