product description 

 

Hydroxypropyl methylcellulose, also known as hypromellose, cellulose hydroxypropyl methyl ether, is made by using highly pure cotton cellulose as a raw material and by special etherification under alkaline conditions.

 

Chemical properties

 Chemical properties

Specification

 

1. Appearance: white or off-white powder.

2, particle size; 100 mesh pass rate is greater than 98.5%; 80 mesh pass rate is 100%. The special size is 40~60 mesh.

3, carbonization temperature: 280-300 ° C

Hydroxypropyl methylcellulose sample
Hydroxypropyl methylcellulose sample
4. Apparent density: 0.25-0.70g/cm (usually around 0.5g/cm), specific gravity 1.26-1.31.

5, color change temperature: 190-200 ° C

6, surface tension: 2% aqueous solution is 42-56dyn / cm.

7, solubility properties: soluble in water and some solvents, such as the appropriate proportion of ethanol / water, propanol / water. The aqueous solution is surface active. The transparency is high and the performance is stable. The gel temperature varies with different specifications. The solubility changes with viscosity. The lower the viscosity, the greater the solubility. The performance of HPMC in different specifications is different. The dissolution of HPMC in water is not affected by pH.

8. HPMC decreases with the methoxy group content, the gel point increases, the water solubility decreases, and the surface activity also decreases.

9, HPMC also has thickening capacity, salt-tolerant low ash powder, pH stability, water retention, dimensional stability, excellent film formation, and a wide range of enzyme resistance, dispersibility and cohesive properties.

usage

usage :

1. Construction industry: As a water retaining agent and retarder for cement mortar, the mortar has pumpability. In the plaster, gypsum, putty powder or other building materials as a binder, improve the spreadability and extend the operation time. Used as a paste tile, marble, plastic decoration, paste enhancer, can also reduce the amount of cement. The water retention of hydroxypropyl methylcellulose HPMC enables the slurry to not crack too quickly after application, and enhances the strength after hardening.

2. Ceramic manufacturing: widely used as a binder in the manufacture of ceramic products.

3. Coating industry: as a thickener, dispersant and stabilizer in the coating industry, it has good compatibility in water or organic solvent. As a paint stripper.

4. Ink printing: As a thickener, dispersant and stabilizer in the ink industry, it has good compatibility in water or organic solvent.

5. Plastic: used as a mold release agent, softener, lubricant, etc.

6. Polyvinyl chloride: As a dispersant in the production of polyvinyl chloride, it is the main auxiliary agent for the preparation of PVC by suspension polymerization.

7. Others: This product is also widely used in leather, paper products, fruit and vegetable preservation and textile industry.

8. Pharmaceutical industry: coating materials; membrane materials; rate-controlled polymer materials for sustained-release preparations; stabilizers; suspending agents; tablet adhesives;

packing&shipping 

 25kg pp bag /paper bag 
14tons/20"fcl