ES223892A2 - A procedure for the preparation of esters quitosan-polisulfºrico (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of esters quitosan-polisulfºrico (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 ES0223892ApriorityCriticalpatent/ES223892A2/en
Publication of ES223892A2publicationCriticalpatent/ES223892A2/en
Polysaccharides And Polysaccharide Derivatives
(AREA)
Abstract
Improvements in the object of the main patent No. 219,669 by "process for the preparation of chitosan-polysulphuric esters, characterized in that chitosan acetate is dissolved in glacial acetic acid and that is made to act on the obtained solution, chlorosulfonic acid in the presence of pyridine. (Machine-translation by Google Translate, not legally binding)
ES0223892A1955-09-081955-09-08A procedure for the preparation of esters quitosan-polisulfºrico (Machine-translation by Google Translate, not legally binding)
ExpiredES223892A2
(en)
A procedure for the total decoration of textile fibers and the obtaining of cellulose from vegetable fibers (Machine-translation by Google Translate, not legally binding)