ES219669A1 - A procedure for the preparation of quisotan-polysulfuric esters (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of quisotan-polysulfuric esters (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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F Hoffmann La Roche AG
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F Hoffmann La Roche AG
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Priority to ES0219669ApriorityCriticalpatent/ES219669A1/en
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Polysaccharides And Polysaccharide Derivatives
(AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
Process for the preparation of chitosan-polysulfuric esters, containing N-formyl groups, with a formyl content of 1.5 to 9%, characterized in that chitosan is transformed into a salt, because the latter is dissolved in formamide and because acid is reacted sulfonic chlorine with this solution. (Machine-translation by Google Translate, not legally binding)
ES0219669A1955-01-211955-01-21A procedure for the preparation of quisotan-polysulfuric esters (Machine-translation by Google Translate, not legally binding)
ExpiredES219669A1
(en)
A procedure for the preparation of solutions of the polycondensates of acid amidas alquiliden and aralquiliden-bis-tiocarboxºlicos (Machine-translation by Google Translate, not legally binding)