METHOD FOR PRODUCING WATER-SOLUBLE CELLULOSE ETHER HAVING LOW DEGREE OF POLYMERIZATION AND METHOD FOR PRODUCING FILM COATING COMPOSITION COMPRISING SAME
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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资源简介：
Provided is a method for producing a low-polymerization cellulose ether with a higher whiteness. A process for obtaining alkali cellulose by contacting a powder pulp having an average product of a number average fiber length and a number average fiber width of less than 0.004 mm 2 with an alkali metal hydroxide in a kayani fiber length meter， and reacting the alkali cellulose with an etherification agent to obtain a high degree of polymerization. A process for obtaining a water-soluble cellulose ether， a process for purifying the crude high-polymerization water-soluble cellulose ether， a process for drying the purified high-polymerization water-soluble cellulose， and a pulverization of the dried high-polymerization water-soluble cellulose ether to pulverize the high-polymerization water-soluble cellulose ether powder It provides a method for producing a low-polymerization-soluble water-soluble cellulose ether， including the step of obtaining， and the step of obtaining a low-polymerization-soluble water-soluble cellulose ether by depolymerizing the high-polymerization water-soluble cellulose ether powder.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
