hpmc cellulose ether
Hydroxypropyl Methyl Cellulose is a natural polymer cellulose as raw material, made of a series of chemical processing and non-ionic cellulose ether. They are an odorless, tasteless non-toxic white powder in cold water swelling into a clear or slightly muddy colloid solution. A thickening, binding, dispersing, emulsifying, film, suspension, adsorption, gel, surface activity, such as maintaining water and protective colloid properties.
Hydroxy Propyl Methyl Cellulose
another name is hpmc cellulose ether , it is a non-ionic, water soluble cellulose ether. It is widely used as thickener, protective colloid, stabilizer, suspending aids and water-retention agents in many industrial applications. It enhances water-retention, besides providing well-balanced properties including open time, slip resistance, adhesion, good impact resistance and shear strength.
hpmc cellulose ether physical property:
Appearance and Properties: White or quasi-white fibrous or granular powder
Density: 1.39 g/cm 3
Solubility: Almost insoluble in absolute ethanol, ether, and acetone; swelling in cold water into a clear or slightly turbid colloidal solution
Stability: Solids are flammable and incompatible with strong oxidants.
1.Resistance to salting out
HPMC is a nonionicic cellulose ether and it is not a polyelectrolyte. The aqueous solution of HPMC is comparatively stable even in.
2. Presence of metal salts or organic electrolytes
However, when the concentration of electrolytes exceeds a certain limit gelation and precipitation may result.
3. Surface activity
An aqueous solution of HPMC has a high surface activity and functions as a protective colloid agent, emulsion stabilizer and dispersant
4. Thermal gelation
An aqueous solution of HPMC will gel or precipitate when heated to a certain temperature, but it reverts to the original solution state on subsequent cooling.The temperature at which gelation or precipitation occur depends on the type of HPMC, its concentration and the rate of heating.
5. PH stability
The viscosity of an aqueous solution of HPMC is hardly affected by acid or alkali. Therefore, the solution viscosity tends to keep stable during prolonged storage.
hpmc cellulose ether application
Ceramic manufacturing industry: widely used as adhesives in the manufacture of ceramic products.
Coatings industry: As a thickener, dispersant and stabilizer in the coating industry, it has good solubility in water or organic solvents. As paint remover.
Ink printing: As a thickener, dispersant and stabilizer in the ink industry, it has good solubility in water or organic solvents.
Plastics: as forming release agent, softener, lubricant, etc.
Polyvinyl chloride: As dispersant in the production of polyvinyl chloride, it is the main assistant in the preparation of PVC by suspension polymerization.
Others: This product is also widely used in leather, paper products, fruit and vegetable preservation, and textile industry.
Pharmaceutical Industry: Coating Material; Membrane Material; Speed-Controlled Polymer Material for Sustained Release Agents; Stabilizer; Suspension Aid; Tablet Adhesive; Viscosifier
hpmc cellulose ether for constructions:
Gypsum Manual Plaster
Extruded Cement Panels
Base Coat Manual Plaster
Top Skim Coat Manual Plaster
Tile grout, Joints, Crack Fillers
Exterior Insulation, Finish System