HPMC raug xa mus rau raws li hydroxypropyl methylulose.
HPMC cov khoom xaiv cov paj roon paj huam heev ua cov khoom siv raw thiab yog tsim los ntawm kev tshwj xeeb ethermication nyob rau hauv Alkaline tej yam kev mob. Tag nrho cov txheej txheem tau ua tiav raws GMP tej yam kev mob thiab kev saib xyuas tsis siv neeg, tsis muaj cov khoom xyaw nquag xws li tsiaj cov tsiaj thiab roj.
HPMC Khoom:
HPMC cov khoom tsis yog-ionic cellulose ether, cov tsos yog cov tshuaj tsw qab, kua dej, dej cawv, thiab lwm yam. kev ua si, siab transparency thiab ruaj khov ua tau zoo. HPMC muaj cov khoom ntawm thermal gel, cov khoom dej dej yog rhuab los ua gel nag lossis kub ntawm cov khoom lag luam kub sib txawv. Solubility hloov nrog viscosity, qhov qis dua lub viscity, ntau dua cov solubility, ntau qhov sib txawv ntawm HPMC muaj qee qhov sib txawv, HPMC hauv dej tsis cuam tshuam los ntawm PH tus nqi. Qhov loj me me: 100 Mesh Pass tus nqi yog ntau dua 100%. Bulk ntom: 0.25-0.70g / (feem ntau txog 0.5g /), tshwj xeeb nqus tau 1.26-1.31. Kev kub ntxhov kub: 190-200 ℃, carbonization kub: 280-300 ℃. Cov nro: 42-56dyn / cm hauv 2% kev daws teeb meem. Nrog kev nce methoxyl cov ntsiab lus, cov gel point poob qis, dej solubility nce, thiab cov haujlwm saum npoo kuj tau nce. HPMC muaj cov yam ntxwv ntawm thickening, salting, cov hmoov tshauv qis, kev tawm tsam zoo, kev tawm tsam zoo heev rau enzyme, dispersity thiab cohesenive.
HPMC daim ntawv thov:
1. Ntsiav tshuaj cov txheej txheem: HPMC siv ua cov khoom siv ua yeeb yaj kiab hauv cov khoom npaj, du thiab zoo nkauj zaj duab xis, siv ntau tshaj plaws ntawm 2% -8%. Tom qab txheej, qhov ruaj ntseg ntawm tus neeg sawv cev rau lub teeb, kub thiab av noo yog ntau dua; Cov tsis muaj ntxhiab thiab tsis muaj ntxhiab, yooj yim mus nqa, thiab HPMC xim, tshuaj pleev thaiv hnub, lubricants thiab lwm yam zoo sib xyaw ntawm cov ntaub ntawv. Cov txheej txheej qub: Dej lossis 30-80% ethanol kom yaj HPMC, xws li: Cov Roj Ntsuas, Cov Roj Castor, Peg400, Talc, thiab lwm yam).
2. Endic-soluble coating txheej txheej: ntawm txheej thiab grancc txheej yog thawj txheej, thiab tom qab ntawd coated txheej hpmcp enteric cov khoom. HPMC zaj duab xis tuaj yeem txhim kho kev ruaj ntseg ntawm Enteric-soluble txheej tus neeg sawv cev hauv kev cia.
3. Kev npaj-tso tawm-tso tawm: Siv HPMC raws li tus neeg sawv cev thiab cia siab rau ntawm Ethelfe Cellulose thiab cia siab-tso cov ntsiav tshuaj tuaj yeem ua tau.
4. Thickening tus neeg saib xyuas thiab colloid tiv thaiv nplaum thiab qhov muag poob: HPMC rau cov neeg sawv cev thickening uas siv ntau ntawm 0.45-1%.
5. Cov nplaum: HPMC ua tus tuav cov tswv yim ntawm 2%, siv los txhim kho qhov ruaj khov ntawm hydrophobic nplaum, feem ntau siv concentration ntawm 0.5-1.5%.
6. Ncua tus neeg sawv cev, tswj cov neeg sawv cev thiab tus neeg sawv cev raug tshem tawm. Tus neeg sawv cev rau tus neeg sawv cev: Cov nyiaj li ib txwm ntawm tus neeg sawv cev raug tshem tawm yog 0.5-1.5%.
7. Khoom noj: HPMC kom cov neeg sawv cev thickening ntxiv rau ntau yam dej, cov khoom noj, tshem tawm tus neeg sawv cev, dej tsis huv, extife, thiab lwm yam.
8. Siv hauv Tshuaj pleev ib ce li cov nplaum, emulsifiers, zaj duab xis ua tus neeg sawv cev, thiab lwm yam.
Lub Sijhawm Post: Jan-14-2022