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Process principle of cellulose ether preparation
Release Time:
2021-09-15
Preparation of alkali cellulose (alkalization): that is, natural cellulose forms alkali cellulose with NaOH under certain conditions
(1) Preparation of alkali cellulose (alkalization): that is, natural cellulose forms alkali cellulose with NaOH under certain conditions
(2) Etherification: heterogeneous reaction of alkali cellulose and etherifying agent
(3) Neutralization: neutralize the unreacted base with a suitable acid
(4) Product separation: including reaction medium recovery, separation, crude product purification and purification.
(5) Post-treatment: including surface cross-linking treatment, drying, pulverization and sieving to adjust solubility properties.
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