Kewei English-language packaging


HydroxyPropyl MethylCellulose

a) Appearance: White or similar to white powder, odorless.

b)   Graininess: More than 98.5% sieving rate for 100 mesh; Totally 100% sieving rate for 80 mesh.

c) Carbonization Temperature: 280-300 ℃

d) Apparent Density: 0.25 to 0.70 g/cm3

f) Color-change Temperature: 190-200 ℃

g)Surface Tension: 42-56 dyn/cm in 2% aqueous solution.

h) Solubility: HPMC is soluble in water and some organic solvents. Its aqueous solution has surface activity. The solubility changes with the viscosity. The higher viscosity, the better solubility. The performance is different for different HPMC. HPMC solubility is not affected by PH value.

i) Methoxyl content: With the reduction of methoxyl content, gel point raise up, water solubility reduce, surface activity decrease.

j) Inertness: No heat, chemical inertness, and not participate in the metabolism of human body.

For HPMC does not dissolve in hot water, first HPMC can be dispersed uniformly in the hot water, then dissolved quickly while cooling down. Two typical methods are described as follows:

a) Method One of Hydrothermal Solution

-Put needed amount of hot water in container and heat to about 70 ℃.

-Add gradually Hydroxyl Propyl Methyl Cellulose(HPMC) while slowly stirring.

-HPMC first floating on the surface of the water, then gradually formed a slurry and cooling down under stirring.

b) Method Two of Hydrothermal Solution

- Put 1/3 or 2/3 needed amount of water in container and heat to about 70℃.

-Following a) method, HPMC disperse and complete the preparation of hot water slurry.

- Put the remaining amount of cold water to the hot water slurry, stirring and cooling down the mixture.

Dry Powder Mixing Method:

-Blend HPMC powder into a lot of other powder material and fully mixed by the mixer.

-Dissolved in water, then HPMC can be dissolved without condensation. Each little HPMC powder at every corner will dissolve when wet.

a) Construction

- Used as the water retaining agent and retarder in mortar to make it has good pumpability.

- Used as adhesives in plaster, gypsum material, putty powder or other construction materials to improve its workability and extend the operation time.

- Used as paste enhancer of ceramic tile, marble and plastic decoration and reduce usage of cement.

- HPMC water retention property can prohibit too fast dry and cracking after the slurry spraying and enhanced strength after hardening.

b) Ceramic industry

- Used widely as binder in the ceramic production industry.

c) Coating industry

- Used as thickening agent, dispersing agent and stabilizer in the coating industry.

- Have a good compatibility in water or organic solvents.

- Used as the paint remover/stripper.

d) Ink printing

- Used as thickening agent, dispersing agent and stabilizer in the printing ink industry.

- Have a good compatibility in water or organic solvents.

e) Plastic

-Used as forming release agent, softening agent, lubricant.

f) Polyvinyl Chloride (PVC) 

-Used as dispersing agent in polyvinyl chloride production and is the main auxiliary for the suspension polymerization of PVC

g) Others:

- Used widely in the industry of leather, paper products, textile, fruits and vegetables fresh keeping, etc.

Packing, storage& transportation precautions

a) Packing:

- Inner polyethylene film bag and outer plastic coated triad compound bag

- 25Kg each bag;

b) Storage& Transportation:

-No damage during the transportation.

-Protect from humidity, rain, sunlight, damp and wet.

-Put in dry and ventilated place During storage.

- Remainder must be promptly sealed and packed to prohibit from wet.

Address: Xinle Industrial Park, Xinle City, Hebei Province   Contact Person: General Manager Zhang   Tel: 15373921111; 18332031111

ICP:19000221-1   Technical Support: