Hydroxypropyl methyl Cellulose (Hypromellose) est a album ad off-album cellulosose pulveris aut pellem, quod habet proprietatibus solutum in frigore aqua et insolubilis in calidas similar to methyl cellulosa. Hydroxypropyl Group et METHYL Group es aether et Cellulose anhydrous Glucosum circulum combined, est a non-ionic cellulosa mixto aether. Est semi-synthetica, sedentes, viscoeelastic polymer communiter in Ophthalmology ut Lubricant vel quod excutienti vel excipient in oralis medicaménta
Praeparatio
In kraft chartam pulpam cum α-cellulosose contentus de XCVII%, intrinseco viscositas 720ml / g et average fibra longitudinem 2.6mm erat impegnata in XLIX% naoh solutio ad XL ℃ ad L seconds. Et inde pulpam erat et extruditur ad removendum excessus XLIX% Naoh Aqueum solutio adipisci alkali Cellulose. Pondus Ratio (XLIX% Naoh in aqua) ad (solidae pars in pulpam) in impregnation gradum erat CC. Pondus Ratio (naoh pars in pulpam) et 1,49. Et alkali Cellulose (20kg) ita adeptus est positus in a teguret pressura reactor cum interna agitatione et vacuumed et purgatus cum NITROGENIUM Gas ad sufficit removere oxygeni ex reactor. Deinde temperatus in reactor regitur in LX ℃, cum interna turbantes exequitur. Then, 2.4kg of dimethyl ether was added and the temperature in the reactor was controlled to maintain at 60 ° C. After the addition of dimethyl ether, methylene chloride was added to make the molar ratio of (methylene chloride) to (NaOH component in basic cellulose) 1.3, propylene oxide was added to make the weight ratio of (propylene oxide) to (solid component in Pulpam) 1.97 et temperatus in reactor fuit regitur a LX ° C LXXX ° C. Post additionem chlorometrhane et propylene cadmiae, in temperatus in reactor fuit regitur a LXXX ℃ ad XC ℃. In addition, in reactionem est ad XC ° C ad XX minutes. Deinde, in Gas est a reactor, et rudis hydroxypropyl methyl cellulosis remota a reactor. Temperatus crudam hydroxypropyl Methylcellulose fuit LXII ℃ cum remota. Metiretur cumulativo L% particula magnitudine in cumulativo pondus secundum particula mole distribution determinatur secundum rationem rudis hydroxypropyl methylcellosus transiens per openings in quinque screens, se cum diversis ostium magnitudine. Qua de causa, in mediocris particula magnitudine aspera particulas est 6.2mm. Et nactus rudis hydroxypropyl Methylcellulosis introducta in continua biaxial anterius (KRC Annaeus S1, l / d = 10.2, internum volumine 0.12 L, Rotation 100RPM) ad Celeritas 10kg / HR ad obtinere decomposita rude hydroxypropyl methylcellos. Ut metiri similiter usura quinque screens cum diversis ostium magnitudinum, in mediocris particula mole fuit 1.4mm. Et Slurry est adeptus a addendo aquam aquam ad LXXX ° C ad resolutum rudis hydroxypropyl Methylcellulose in Tristi cum Jacket temperatus imperium, et pondus in austro (moles hydroxypropyl) ad 0.1. Et slurry est Suscitavit ad constant temperatus de LXXX ° C LX minuta. Deinde, in slurry supplevit ad gyratorius pressura filter (bhs Sonthofen productum) cum rotatione celeritas 0,5 RPM et pre-succenderetur. Temperatus ad slurry erat XCIII ℃. Slurry est a pump cum fluxum pressura 0.2MPA. Et ostium magnitudine ad gyratorius pressura filter est 8μm et filtration regio est 0.12m2. Slurry supplet ad gyratorius pressura filter est percolantur per filter et transformed in filter crustulam. Et inde crustulam pascebat vapor 0.3MPA et calida aqua ad XCV ° C ad pondus ratio of 10.0 ad solidum pars laverunt hydroxypropyl methylcellosa et percolantur per filter. Calida aqua suppeditur a pump cum fluxum pressura 0.2MPA. Postquam aqua calida, 0.3MPA vapor supplevit. Lavit uber super superficiem filter est igitur remota per ramos et dimitti de washer. Continua gradibus a copia slurry ad fluxum laverunt uber. In aqua contentus de laverunt uber erat 52.8% ut metiri calefactio siccatio hygrometer. Et lotis products dimitti a gyratorius pressura filter sunt exaruit usura est aer dryer ad LXXX ° C et oppressi in impulsum molendini molendini molendini obtinere hydroxypropyl.
applicatio
Hoc productum adhibetur ut irradatus agente, dispersant, ligans, emulsifier et stabililerit in textile industria. Et late in synthetica resinae, petrochemical, Ceramic, charta, corium, medicina, cibum, cosmetics et alia industries.
Post tempus: Feb, 20-2025