Title: Preparation technology of cyanoethyl cellulose
Application Number: 86108562 Application Date: 1986.12.15
Publication Number: 1019213 Publication Date: 1988.06.29
Approval Pub. Date: Granted Pub. Date: 1990.05.09
International Classifi-cation: C08B3/06,C08B13/00,C08B15/06
Applicant(s) Name: Guangzhou Chemistry Inst., Chinese Academy of Scie Address:
Inventor(s) Name: Chen Liankai, Guo Yanfang
Attorney & Agent: LI JILAN
Abstract:
     The present invention relates to the preparation technology of a cellulose ester-ether mixed derivative, cyanoethyl cellulose. In the said technology the cellulose is soaked and activated twice with sodium hydroxide aqueous solution, and then the cyanoethylation reaction under negative pressure and the acetylation in the presence of some catalysts will exert. The invention features the possibility of preparing products with given ratio of ester radical to ether radical, low chemicals consumption, and short reaction time. The cyanoethyl cellulose produced based on the present invention can be used to prepare various films with high water flux, high cut-off rate, excellent microbe resistance and better chemical stability.
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