Hydroxypropyl methyl Cellulose HPMC, etiam notum ut hydroxypromellose est albus ad off-album cellulosa aether pulveris aut granula quod habet frigus aqua solubility et calida aqua insolubilitas similis METHYLES. Hydroxypropyl Group et METHYL Group es aetheris et anhydrous GLYCOSA circulum Cellulose combined, est quaedam non-Ionic Cellulose mixto aether. Est semi-synthetica, sedentes, viscoeelastic polymer communiter usus est in lubricant in Ophthalmology, aut quod excipient et excipient in oris medicamenta.
I. Productio processus
Kraft Pulpam cum αcellulose contentus de XCVII%, intrinsic viscositas 720ml / g et average fibra longitudinem 2.6mm est madidum in XLIX% naoh solution ad XL ℃ ad L seconds. Tum quod pulpam extruditur ad removendum excessus XLIX% naoh solution ut alkali Cellulose. Pondus Ratio (XLIX% Naoh Aqueum solution) ad (solidum pars pulpam) in impregnation gradum erat CC. Pondus Ratio est 1,49. Et alkali Cellulose sic nactus (20kg) est positus in a jacked pressura reactor cum interna agitatione, tunc vacuoized et purgatoris cum NITROGENIUM ad satisfectly removere oxygeni ex reactor. Deinde temperatus in reactor regitur in LX ℃ dum interna turbantes fuit.
Deinde 2.4kg DME addita et temperatus in reactor fuit regitur ad LX ℃. Post additionem Dimethyl aether, methylene chloride est additum ad molares Ratio Methylene chloride ad Naoh in alkaline Cellulose 1,3, propylene ad solidum in pulpam 1,97 et temperatus ad LXXX ℃. Post addendo chlorometrhane et propylene cadmiae, temperatus in reactor fuit imperium a LXXX ℃ ad XC ℃. Praeterea, in reactionem pugnatum pro XX minutes ad XC ℃.
In Gas est igitur exhausit a reactor et rudis hydroxypropyl methyl cellulosis remota a reactor. Et temperatus de rudis hydroxypropyl methyl cellulosa erat LXII ℃. Metiretur cumulativo L% particula magnitudine in cumulativo pondus secundum particula mole distribution secundum rationem rudis hydroxypropyl methyl cellulosis per openings de quinque siviring, uterque habens diversis ostium magnitudine.
Qua de causa, in mediocris particula magnitudinem crassum particularum erat 6.2mm. Et adeptus rudis hydroxypropyl METHYL cellulosis in introduced in continua Biaxial Anno (KRC Annaeus S1, L / D = 100RPM, CELLAE CELLAE CELLAE CELLA. Sicut effectus similes mensurae per V screens cum diversis ostium magnitudinum, in mediocris particula mole fuit 1.4mm. Addit LXXX ℃ calida aqua ad decomposita rude hydroxypropyl methyl Cellulose in piscinam cum temperatus imperium de iaccam. Quantum pondus Ratio est decomposita rude hydroxypropyl methyl cellulosis ad totalis moles slurry est 0,1, et slurry est adeptus. Et slurry fuit Suscitavit ad constant temperatus de LXXX ℃ pro LX minutes.
Deinde, in slurry suppletur ad rotating celeritas 0,5 RPM et pre-calefacto gyratorius pressura filter (BHS Sonthofen Products). In temperatus est Grout est XCIII ℃. Utere a sentinam ut copia slurry, sentinam fluxum fluxum pressura est 0.2MPA. Et ostium magnitudine gyratorius pressura filter est 8μm et filter area est 0.12m2. Slurry supplet ad gyratorius pressura filter est percolantur per filter et convertit in filter crustulam. Et inde filter crustulam suppeditat 0.3MPA vapore et XCV ℃ calida aqua pondus ratio 10.0 ad solidum pars lavari hydroxypropyl methyl Cellulose, quod est ergo per filter.
Calida aqua suppletur per a pump ad fluxum pressura 0.2MPA. Hot aqua supplevit 0.3MPA Supplevit. Deinde post baptismata products sunt remota ex filter superficiem per a ramis et dimitti e baptismata apparatus. In gradibus a supplere slurry ad dimitti laverunt products sunt ferri continue. Ut metiri usura a calor - siccatio hygrometer, aqua contentus de laverunt uber sic dimitti erat 52.8%. Et laverunt products ex gyrariis pressura filter exaruit a aer dryer ad LXXX ℃ et oppressi in victoria molendini adipisci hydroxypropyl methyl cellulosose.
2.appices
HPMC uber adhibetur ut Thickener, dispersant, ligans, emulsifier et stabililior in textile industria. Et late in synthetica resinae, petrochemical, Ceramic, charta, corium, medicina, cibum, cosmetics et alia industries.
Post tempus: Mar-23-2022