Waa maxay saamaynta cabirka urta ee ku saabsan hydroxypropyl methylcelrelose:
Synthesis of hydroxypropylylrcellellase: Daweeyo suufka suufka ah ee suufka ah ee leh Lye saacadda nus-saac, kuna dhaji si fiican u nugul 35 ° C, sidaa darteed celcelis ahaan heerka pomanmerization ee alkali-ka la helay ee loo baahan yahay ayaa ku dhex jira xargaha loo baahan yahay. Ku rid ableli fiberka ku dheji jeble-ka soo baxa, ku dar propylene okside iyo methyl chloride-ka, iyo ethetty chloride-ka, iyo ethertytttka ah 50-80 ° C 5 saacadood, cadaadiska ugu sarreeya waa 1.8mpa. Ka dib ku dar qaddar ku habboon oo ah hydrochloric acid iyo oxalic acid biyo kulul 90 ° C si aad u maydho waxyaabaha lagu ballaariyo mugga. Fuuq-baxa oo ku jira centrifeed. Ku maydh biyo ilaa dhexdhexaad. Marka qoyaanka ay ka kooban tahay in walxaha ay ka yar tahay 60%, ku qalaji durdur kulul oo hawo kulul 130 ° C illaa ay ka kooban tahay qoyaanku ka hooseeyo 5%.
HPMC waxaa soo saaray habka solvent adeegsiga toluene iyo isopropanol inay yihiin solvents. Haddii maydhistu aysan fiicneyn, waxoogaa ur ur ah ayaa sii jiri doona. Waqtigan xaadirka ah, tayada tayada Hydroxypropyl Mykelrellase HPMC si weyn ayey u kala duwan tahay, oo qiimaha ayaa si ballaadhan u kala duwan yahay, taasoo adkeyneysa macaamiisha inay sameeyaan doorashada saxda ah. Tani waa dhibaatada habka loo dhaqo, ma saameynayso isticmaalka mana jiro wax dhib ah, HPMC saafiga ah ma urineyso ammonia, istaarijka iyo aalkolada; HIPMC-da ayaa had iyo jeer urin kara dhammaan noocyada urta, xitaa haddii ay dhadhan la'aan tahay, waxay dareemi doontaa culus. Si kastaba ha noqotee, shirkadda hydroxypropyl methylcelrellose waxaa soo saaray soosaarayaal badan oo leh ur gaar ah oo ur ah oo ur ah oo ur ah. Tayada dhab ahaantii maahan illaa ma aha.
Hantpromellose waxaa lagu helaa iyada oo loo yaqaan 'hypromellose' laga helo suufka la safeeyey oo leh dareere dhireed leh si loo helo unugyada alkaline, ka dibna ku darista wakiilka xalka, qalajinta, qalajinta, qalajinta, burburka, iwm. Si loo helo badeecadaha la dhammeeyo. Hagaag, waxaa jiri doona ur, sidaa darteed isticmaaleyaashu waxay u isticmaali karaan kalsooni.
Waqtiga Post: Jun-09-2023