Hypromellose 2208 thiab 2910

Hypromellose, tseem hu ua hydroxypropyl methylcellulose (HPMC), yog ib qho tsis muaj tshuaj lom thiab tsis yog-ionic cellulose ether uas yog siv rau ntau yam kev siv, suav nrog tshuaj, tshuaj pleev ib ce, thiab khoom noj khoom haus. HPMC muaj nyob rau hauv ntau qib, suav nrog Hypromellose 2208 thiab 2910, uas muaj cov khoom sib txawv thiab kev siv.

Hypromellose 2208 yog qib qis viscosity ntawm HPMC uas feem ntau siv los ua cov ntawv khi, thickener, thiab zaj duab xis qub hauv cov tshuaj. Nws yog feem ntau siv rau hauv cov ntsiav tshuaj txheej, qhov twg nws muab ib tug du, glossy nto thiab txhim kho cov ntsiav tshuaj stability. Hypromellose 2208 kuj tseem siv rau hauv cov tshuaj ophthalmic formulations, qhov twg nws ua raws li ib tug lubricant thiab txhim kho cov viscosity ntawm formulation.

Hypromellose 2910 yog qib viscosity siab dua ntawm HPMC uas yog siv los ua cov thickener, binder, thiab emulsifier hauv ntau daim ntawv thov. Hauv kev lag luam tshuaj, nws feem ntau yog siv los ua tus neeg sawv cev tso tawm, vim nws maj mam tso cov khoom muaj txiaj ntsig dhau sijhawm. Hypromellose 2910 kuj tseem siv rau hauv cov tshuaj pleev ib ce, qhov twg nws muab cov nyhuv thickening, txhim kho kev ruaj ntseg ntawm emulsions, thiab txhim kho cov kev ntxhib los mos ntawm cov khoom.

Hauv cov ntsiab lus, Hypromellose 2208 thiab 2910 yog ob qib ntawm HPMC nrog cov khoom sib txawv thiab kev siv. Hypromellose 2208 yog qib viscosity tsawg siv hauv cov tshuaj, thaum Hypromellose 2910 yog qib viscosity siab dua siv hauv tshuaj, tshuaj pleev ib ce, thiab lwm yam kev siv.