Hydroxypropyl methylcellulose
Hydroxypropyl methylcellulose
Hydroxypropyl methylcellulose Hydroxypropyl Methyl Cellulose ConstructionHydroxypropyl Methyl Cellulose HPMC for Tile AdhesiveHigh Viscosity Methyl Cellulose HPMC for Dry Mortar Additive HPMC is a highly pure cotton cellulose as raw material, under alkaline conditions by special etherification and preparation.White or whitish powder.HPMC decreases with the decrease of methoxide content, increase of gel point, decrease of water solubility and decrease of surface activity. Hydroxypropyl MethylCellulose is a non-ionic cellulose ether made through a series of chemical processes, with the natural polymer cellulose as the raw material. HPMC is a odorless, tasteless, non-toxic white powder, can be dissolved in cold water, the formation of transparent viscous solution. With thickening, adhesion, dispersion, emulsification, film formation, suspension, adsorption, gelation, surface activity, water retention and protective colloid properties. HPMC has thickening ability, salt resistance, low ash powder, pH stability, water retention, dimensional stability, excellent film forming, and a wide range of enzyme resistance, dispersion and adhesion.NameHydroxypropyl methyl cellulose (HPMC)Content of hydroxypropyl%7.0-12.0Content of Methoxyl %26.0-30.0Gel temperatureºC54-72Ash(Wt%)≤5Water(Wt%)≤1PH5-8AppearanceWhite Powder or granulaFineness100mesh≥98.5%;80mesh≥100%Surface TreatmentCold water instant type: surface treatmentOrdinary hot melt type: without surface treatment 1.Enhanced water retention-improved water retention can protect cement and plaster against poor solidification and cracking due to speedy drying and inefficient mixing with water.2.Workability-mortar plasticizing quality can be improved,which in return will improve the workability of painting and working efficiency.3.Binding-Dur to increased plasticizing quality,mortar can be a better binder.4.Slipping resistance-Due to the thickening action of cellulose ether,the slipping phenomena of mortar from substance to bound can be prevented more efficiently. Hpmc Features:1.Appearance: HPMC is a white to light yellow powder or granular product2.Solubility: HPMC is nearly insoluble in anhydrous ethanol, ethyl ether and acetone. It is swelled in cold water to form a transparent or a slight cloudy solution. HPMC can be dissolved into some organic solvents and also in water-organic solvent mixed solvents.3.Graininess:The product particle size is greater than or equal to 80mesh.4.With reduction of methoxyl groups content, HPMC is increased in gelling temperature and decreased in water solubility and surface activity.
