Institutul De Cercetare Si Proiectare Pentru Fibre Artificiale
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Priority to RO119366ApriorityCriticalpatent/RO92749B1/en
Publication of RO92749A2publicationCriticalpatent/RO92749A2/en
Publication of RO92749B1publicationCriticalpatent/RO92749B1/en
Polysaccharides And Polysaccharide Derivatives
(AREA)
Abstract
Prezenta inventie se refera, la un procedeu de obtinere a celulozei pentru acetilare prin fierberea lemnului de rasinoase în doua trepte de fierbere cu sulfit acid de amoniu, înalbirea masei de reactie prin tratare cu clor activ, înnobilare cu NaOH, Na3PO4 si Na2SO3 tratare cu hipoclorit, apoi cu apa oxigenata si acidulare cu SO2.The present invention relates to a process for obtaining cellulose for acetylation by boiling whitewood in two boiling steps with ammonium hydrogen sulphite, bleaching the reaction mass by treatment with active chlorine, enriching with NaOH, Na3PO4 and Na2SO3 treatment with hypochlorite , then with hydrogen peroxide and acidification with SO2.
RO119366A1985-07-011985-07-01Process for obtaining cellulose used for acetylation
RO92749B1
(en)
A procedure for the bleaching, especially of organic substances, in aqueous solutions of acids of clorites. (Machine-translation by Google Translate, not legally binding)