Alkali-soluble hydroxyethyl cellulose(HEC),one of cellulose derivatives with lower etherification degree,could be made by the gas-solid reaction of cellulose and ethylene oxide.

• 碱溶性羟乙基纤维素是纤维素的一种低醚化度的醚化产物,采用气固相的反应方法可以得到碱溶性良好、醚化度均一的羟乙基纤维素。