Hydroxyethyl cellulose (HEC) ichena kana yakareruka yeyero, isinganhuhwi, isina chepfu fibrous kana upfu, yakagadzirwa nedonje linters kana yakanatswa pulp yakanyikwa mu30% yealkali yemvura, inoburitswa uye kudzvanywa mushure mehafu yeawa, Svidza kusvika chiyero. yealkaline mvura inosvika 1:2.8, wobva wapwanya. Zviri kugadzirira...
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