Product Name: Hydroxypropyl Methyl Cellulose (HPMC,MHPC)
This product is a non-ionic cellulose ether, white powder in appearance, odorless and tasteless, soluble in water and most polar organic solvents and appropriate proportions of ethanol/water, propanol/water, dichloroethane, etc. Diethyl ether, acetone, and absolute ethanol are insoluble, and swell into a clear or slightly turbid colloidal solution in cold water. The aqueous solution has surface activity, high transparency and stable performance. HPMC has thermal gel properties. The product solution forms a gel and precipitates when heated, and then dissolves after cooling. The gel temperature of products of different specifications is different. The solubility changes with the viscosity. The lower the viscosity, the greater the solubility. The properties of different specifications of HPMC have certain differences. The dissolution of HPMC in water is not affected by the pH value. Granularity: The pass rate of 100 mesh is greater than 100%. Bulk density: 0.25-0.70g/ (usually about 0.4g/), specific gravity 1.26-1.31. Discoloration temperature: 180-200℃, carbonization temperature: 280-300℃. HPMC has the characteristics of thickening ability, salt drainage, pH stability, water retention, dimensional stability, excellent film-forming properties, and wide range of enzyme resistance, dispersibility and adhesion.
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Item |
MT-E |
MT-F |
MT-K |
|
Methoxyl % |
28.0-30.0 |
27.0-30.0 |
19.0-24.0 |
|
Hydroxypropyl % |
7.0-12.0 |
4.0-7.5 |
4.0-12.0 |
|
Gelling Point /℃ |
58-64 |
62-68 |
70-90 |
|
Loss on Drying % |
≤5% |
||
|
Residue % |
≤1.0% |
||
|
PH Value |
4.0-8.0 |
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|
Viscosity mpa.s |
50----200000 |
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a. Construction industry: as a water-retaining agent and retarder for cement mortar slurry, it makes mortar pumpable. Used as a binder in plaster, plaster, putty powder or other building materials to improve spreadability and prolong operation time. It can be used to paste ceramic tiles, marble, plastic decoration, paste enhancer, and reduce cement consumption. The water retention properties of HPMC prevent the slurry from cracking due to drying too fast after application, and enhance the strength after hardening.
b. Ceramic manufacturing industry: widely used as a binder in the manufacturing of ceramic products.
c. Paint industry: As a thickener, dispersant and stabilizer in the paint industry, it has good compatibility in water or organic solvents. As a paint remover.
d. Ink printing: As a thickener, dispersant and stabilizer in the ink industry, it has good compatibility in water or organic solvents.
e. Plastic: used as mold release agent, softener, lubricant, etc.
f. Polyvinyl chloride: Used as a dispersant in the production of polyvinyl chloride, and is the main auxiliary agent for the preparation of PVC by suspension polymerization.
g. Others: This product is also widely used in leather, paper products, fruit and vegetable preservation and textile industries.