ES8203995A1 - Procedure for the continuous obtaining of viscose ray threads (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the continuous obtaining of viscose ray threads (Machine-translation by Google Translate, not legally binding)
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SNIA Viscosa SpA
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SNIA Viscosa SpA
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Application filed by SNIA Viscosa SpAfiledCriticalSNIA Viscosa SpA
Priority to ES503324ApriorityCriticalpatent/ES503324A0/en
Publication of ES8203995A1publicationCriticalpatent/ES8203995A1/en
Publication of ES503324A0publicationCriticalpatent/ES503324A0/en
Procedure for the continuous obtaining of viscose rays with a certain grade of blancura. Is to submit the following final treatments to a thread that has already been coagulated in part and totally stretched: first, the coagulation of the thread is completed to get a final coagulation index not higher than 1; second, the coagulated thread is treated with water that has a non-alkaline phase until the amounts of certain elements, which are retained in the thread, are reduced to values of no more than 0.2 per 100 for the sulfur, a 0.02 per 100 for sulfur combined as sulfurs, a 0.06 per 100 for elemental sulfur, a 40 ppm for iron, a 700 ppm for zinc and a 30 ppm for pb. (Machine-translation by Google Translate, not legally binding)
ES503324A1981-06-231981-06-23
PROCEDURE FOR THE CONTINUOUS OBTAINING OF VISCOSA RAYON THREADS
GrantedES503324A0
(en)