-
Hydroxypropyl Methyl Cellulose (HPMC)
Hydroxypropyl methyl cellulose, ua kom yooj yim rau propyl methyl cellulose (HPMC hydroxypropylmethylcellulose, abbreviation), nws yog mus rau ntau yam sib xyaw uas tsis yog-ionic cellulose ether. Nws yog semi-synthetic, inactive, viscoelastic polymer feem ntau siv nyob rau hauv ophthalmology ua ib tug lubricant, los yog raws li ib tug excipient los yog excipient nyob rau hauv lub qhov ncauj tshuaj, feem ntau pom nyob rau hauv ntau yam khoom. Hydroxypropyl cellulose tuaj yeem siv los ua khoom noj khoom haus, emulsifier, thickener, raug tshem tawm tus neeg sawv cev thiab tsiaj gelatin hloov.
Yam khoom SPECIFICATIONS Qhov tshwm sim Dawb hmoov Decomposition kub 200 min Discoloration kub 190-200 ℃ viscosity 400 Tus nqi PH 5 ~ 8 Qhov ntom 1.39g / cm3 Carbonization kub 280-300 ℃ Hom Qib zaub mov Cov ntsiab lus 99% Ntog nro 42-56dyne / cm rau 2% aqueous tov -
Hydroxypropyl Methylcellulose (MHPC)
Hydroxypropyl methylcellulose (MHPC) yog odorless, tasteless, non-toxic cellulose ethers uas muaj hyrdroxyl pawg ntawm cov cellulose saw hloov rau ib pawg methoxy los yog hydroxypropyl nrog dej solubility zoo. HPMC F60S yog qib high-viscosity uas yog siv los ua cov thickener, binder, thiab zaj duab xis qub hauv agrochemicals, coatings, ceramics, adhesives, inks, thiab ntau yam kev siv.
-
Hydroxyethyl Cellulose (HEC)
Hydroxyethyl Cellulose (HEC) yog ib qho uas tsis yog-ionic, dej-soluble polymer muab los ntawm cellulose los ntawm cov txheej txheem tshuaj thiab lub cev.HEC yog xim dawb rau lub teeb daj, tsis muaj ntxhiab thiab tsis qab, yooj yim soluble hauv dej kub lossis dej txias los ua ib qho viscous gel tov.Thaum pH hauv cov tshuaj 2 txog 12, cov tshuaj yog qhov ruaj khov heev.Vim HEC pawg yog nonionic ib qho hauv dej, nws yuav tsis hnov mob nrog lwm cov anions lossis cations thiab insensitive rau cov ntsev.
Tab sis HEC molecule muaj peev xwm tsim esterification, etherification, yog li nws muaj peev xwm ua kom nws tsis muaj dej hauv dej los yog txhim kho nws cov khoom.HEC kuj muaj peev xwm ua kom zoo nkauj thiab ua haujlwm saum npoo.
