Hydroxypropyl methyl cellulose (HPMC) amapangidwa kuchokera ku thonje woyengedwa bwino, alkalized ndi sodium hydroxide (madzimadzi a caustic soda) yankho, etherified ndi methyl chloride ndi propylene oxide, kenako neutralized, zopezedwa pambuyo kusefa, kuyanika, kuphwanya ndi sieving.Zofotokozera Zikuwoneka...
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