将浆粕转变为可溶解的黄酸酯是再生纤维素产品生产中的重大技术和经济意义的一个工艺步骤。浆粕应转变成可溶解的黄酸酯, 该酯中末反应或反应不完全的不溶性残渣应越低越好。但在实际上不溶性颗粒的存在似乎不可避免。为了分类和了解粘胶中颗粒的生成,人们做了进一步的研究工作。其颗粒可分为三大类:①无机不溶性杂质(主要为硅酸盐 The conversion of pulp to dissolvable xanthate esters is a significant technological and economic step in the production of regenerated cellulose products. The pulp should be converted to a soluble yellow acid ester, the lower the insoluble residue in the ester or incomplete reaction is, the better. But in fact the existence of insoluble particles seems inevitable. In order to classify and understand the particles in the viscose generation, people have done further research. The particles can be divided into three categories: ① inorganic insoluble impurities (mainly silicate