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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KESKUSLABORATORIO
Original Assignee
KESKUSLABORATORIO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KESKUSLABORATORIOfiledCriticalKESKUSLABORATORIO
Priority to ES434651ApriorityCriticalpatent/ES434651A3/en
Publication of ES434651A3publicationCriticalpatent/ES434651A3/en
Polysaccharides And Polysaccharide Derivatives
(AREA)
Abstract
Process for the manufacture of viscose, characterized by the fact that aged alkaline cellulose, before being xanatized, is subjected to at least one maceration and pressing treatment, in which an aqueous solution of naoh at a concentration of less than 15% by weight is used for at least one maceration, said padding and pressing steps by reducing the amount of kaoh to produce a second alkaline cellulose with a ratio of kaoh to cellulose by weight of 0.5 or less than this, said second alkaline cellulose with carbon disulfide and dissolve the resulting xanthate in a dilute solution of kaoh or water to produce the viscose. (Machine-translation by Google Translate, not legally binding)
ES434651A1975-02-121975-02-12Procedure for viscose manufacture. (Machine-translation by Google Translate, not legally binding)
ExpiredES434651A3
(en)
Procedure for the obtaining of filaments, films or similar articles of regenerated pellulose (Machine-translation by Google Translate, not legally binding)