Background et Overview
Cellulose aether est late usus polymer denique eget materia factum ex natura polymer Cellulose per eget curatio. Post fabricantium Cellulose nitrate et Cellulose acetate in 19th century, chemists sunt developed seriem cellulosis derivationes multorum cellulosose aether, et novum applicationem agri inventa continuously, et novum applicationem sunt inventa continuously, multas industrialis sectori inventa, involving multas industriae sectori. Cellulose Aether products ut sodium carboxymethyl Cellulose (CMC), ethyl cellulosa (EC), hydroxyethyl cellulosa (HP), Hydroxyethyl Cellulose (HPC), Methyl hydroxyethyl (HPC), Methyl hydroxyethyl cellulosa (MHPC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl (MHAC) et Methyl hydroxypropyl cellulosa (MHPC) et Alia Cellulose aethere sunt quae "Industrial Monosodium glutamate "et late in oleum EXERCITATIO, constructione, coatings, cibum, medicina et cotidie oeconomiae.
Hydroxyethyl Methyl Cellulose (MHPC) est in odorless, insulsa, non-toxicus alba pulveris, quod potest dissolvi in frigore aqua ad formare per transparent viscosa. Habet habet rationem crasso, binding, dispersio, emulsifying, film-format, suspending, adsorbing, gelling, superficiem activae, maintaining humorem et protegens colloid. Ex superficiebus activae munus aqueum solutio, quod potest esse sicut colloidal tutela agente, emulsifier et dispersant. Hydroxyethyl methylcellosus Aqueum solutio habet bonum hydrophilicity et est efficiens aqua retentione agente. Quia hydroxyethyl methylcellose continet hydroxyethyl coetus, quod habet bonum anti-rubigo facultatem, bonum viscosity stabilitatem et rubigo resistentia durante diu-term repono.
Hydroxyethyl methylcellosus (Hemc) paratus per introducendis ethylene cadmiae substituents (MS 0.3 ~ 0.4) in methylcellosus (mc) et salis resistentiam melius quam quod exlematos Polymers. Et gelaer temperatus de methylcellosus est etiam altior quam quod Mc.
Structura
Pluma
Pelagus characteres hydroxyethyl methylcellulose (Hemc) sunt:
I. Solubility: solutum in aquam et quaedam organicum solvents. Hemc potest dissolvi frigidam. Suum summum concentration solum determinari per viscositatem. Solubility variatur cum Viscosity. In inferioribus viscositas maior solubility.
II. Salis resistentia: Hemc products sunt non-Ionic cellulosa aether et non polyelectrolytes, sic sunt relative stabile in aqueum solutions cum metallum sales aut organicum electrolytes est, sed etiam ex electrolytes potest facere galaing et praecipitatio.
III. Superficiem operatio: Ob ad superficiem activae munus aqueum solution, quod potest esse sicut colloidal tutela agente, emulsifier et dispersant.
IV. Thermal Gel: cum aqueum solutio HEMC products calescit ad quaedam temperatus, id fit opacum, tibia, et praecipitat, sed quod est maxime, quod est in ea gel et praecipitatio est maxime, quod est in illis, et in AIDMENTUM, tutela, et ad originale etc.
V. Metabolicae inertness et humilis odorem et odorem: Hemc late usus est in cibo et medicina quia non erit metabolized et humilis odorem et odorem.
VI. Robigi resistentia: Hemc habet relative bonum rubigo resistentia et bonum viscosity stabilitas durante diu term repono.
VII. PH stabilitas: et viscositas aqueum solutio HEMC products est vix affectus acidum aut alkali et PH valorem est relative firmum in range of 3.0 ad 11.0.
Applicatio
Hydroxyethyl Methylcellulose potest esse sicut colloidal tutela agente, emulsifier et dispersant ex eius superficies-activae munus in aqueum solutio. Et applicationem exempla sunt ut sequitur:
I. Effectus hydroxyethyl Methylcellulose super cementum effectus. Hydroxyethyl methylcellosus est odorless, insipidum, non-toxicus alba pulveris quod potest dissolvi in frigore aqua ad formare per transparent visca solutio. Habet habet rationem crasso, binding, dispersio, emulsifying, film-format, suspending, adsorbing, gelling, superficiem activae, maintaining humorem et protegens colloid. Cum aqueum solutio habet superficies activae munus, quod potest esse sicut colloidal tutela agente, emulsifier et dispersant. Hydroxyethyl methylcellosus Aqueum solutio habet bonum hydrophilicity et est efficiens aqua retentione agente.
II. A valde flexibile relevium pingere paratus, quod est ex hoc rudis materiae in partes pondus 150-200 g deionized aqua; 60-70 g de pura acrylic EMULSIO; 550-650 g de gravibus calcium; 70-90 g de talci pulveris; Basi cellulosis aqueum solutio 30-40g; Lignocellulose aqueum solutio 10-20g; film-formatam auxilium 4-6g; antiseptic et fungicide 1.5-2.5g; Dispersant 1.8-2.2g; Metendis agente 1.8-2.2g; 3.5-4.5g; Ethylene Glycol 9-11g; Et hydroxyethyl methylcellulosis aqueum solutio est per solutam, in aquam% hydroxyethyl Methylcellulose in aqua; Et Lignocellulose aqueum solutio factum est de 1-3% Lignocellulose factum est per dissolutionem aqua.
Praeparatio
A praeparatio modum hydroxyethyl methyl Cellulose, modum est quod probatos bombacio adhibetur ut rudis materia, et ethylene cadmiae adhibetur ut etherification agente ad parare hydroxyethyl methyl cellulosa. The weight parts of raw materials for preparing hydroxyethyl methylcellulose are as follows: 700-800 parts of toluene and isopropanol mixture as solvent, 30-40 parts of water, 70-80 parts of sodium hydroxide, 80-85 parts of refined cotton, ring 20-28 parts of oxy ethane, 80-90 parts of methyl chloride, 16-19 parts of glacial acetic Acidum; In specifica gradus sunt:
Primum gradum in reactionem olestle, addere toluene et isopropanol mixtisque, aqua et sodium hydroxide, calor usque ad 60-80 ° C, ut calidum in 20-40 minutes;
Secundum gradus, alkalization: refrigescant super materiae ad 30-50 ° C, addere probaverunt bombacio, imbre Toluene et isopropanol mixtisque solvente, et ad 0.006mpa, et alcalization est ad L ° C ° F;
Tertium gradum, etherification: post alkalization perficitur, reactor est evacuata ad 0.05-0.07MPA et ethylene cadmiae et methyl chloride additur 30-50 minutes; Primum scaena etherification: 40-60 ° C, 1.0-2.0 horis, in pressura est imperium inter 0.15 et 0.3MPa; Secundum scaena ethere: LX ~ XC ℃, 2.0 ~ 2.5 horis, impressionem regitur inter 0.4 et 0.8MPA;
The fourth step, neutralization: add the measured glacial acetic acid in advance to the precipitation kettle, press into the etherified material for neutralization, raise the temperature to 75-80°C for precipitation, the temperature rises to 102°C, and the pH value is detected to be 6 At 8 o'clock, the desolventization is completed; Et Desolentization tristique est repleti ICTUS aqua tractata per e converso osmosis fabrica ad XC ° C C ° C °;
Quintus gradus, centrifuga baptismata: in materia in quarta gradus est centrifuge per horizontalem stupra et in separata materia transfertur ad baptismata cisternina repleti calida aquae in antecessum ad baptismata mox impleta calida aquae in laterem de materia;
Sextus gradus, centrifuga siccatio: lotis materiae non est in dryer per horizontalem stupra et centrifuge, et exaruit ad 150-170 ° C et exaruit materia est oppressi et packaged.
Comparari cum existentium Cellulose aether Lorem technology, in praesens invention utitur ethylene cadmiae quod etherification agente ad parare hydroxyethyl methyl cellulosa, quae habet bonum rubigo resistentia propter continet hydroxyethyl coetus. Hoc est bonum viscosity stabilitas et aurugine resistentia durante diu term repono. Potest esse pro aliis Cellulose aether.
Post tempus: Mar-10-2023