Hydroxypropyl methyl cellulose ether

Introduction:

HPMC also known as hydroxypropyl methyl cellulose ether, is one type of non-ionic cellulose mixed ether. Hydroxypropyl methyl cellulose has no odor, no taste, and is non-toxic. It is a white or off-white fibrous powder that can dissolve in water to form a transparent and viscous solution. Hydroxypropyl methyl cellulose can be widely used in construction materials, cosmetics, coatings, ceramics, etc., and has functions such as thickening, water retention, adhesion, dispersion, and suspension.

Properties and advantages:

• ‍1) Lubrication performance: By lubricating, the machinability and processing effect of cement-based and ceramic-based extruded parts are improved.
• 2) PH stability: HPMC remains stable within the pH range of 3.0 to 11.0. When an alkaline environment exists, the solubility will significantly increase.
• 3) Stable chemical properties: It is compatible with other ionic and non-ionic additives in the aqueous solution, and provides a stable combination when dissolved in water.
• 4) Cost savings: The high water requirement of HPMC can increase the output of your materials, thereby saving your costs.
• 5) Thickening effect: HPMC increases the viscosity of liquids in personal care and daily care products.
• 6) Suspension effect: It can improve the dispersion and suspension effect of each material in the mixture system, and enhance stability, including concrete systems, mortar, and EIFS exterior wall insulation mortar systems.
• 7) Water retention performance: It delays the excessive water loss during the drying process of building construction, enhances water retention performance, and ensures sufficient hydration time for cement, lime, and gypsum-based building materials.
• 8) Open time: HPMC extends the open time during construction, thereby providing sufficient time for corrections.‍

Technical Specifications

• ‍Product Name: HPMC
• Full Name: hydroxypropyl methyl cellulose
• CAS NO.: 9004-65-3‍

Packaging: 

• ‍In 25KG bag,12MTS/20GP with pallets, 14 MTS /20GP without pallets; 24MTS/40HQ with pallets, 28MTS /40HQ without pallets 
• In 25kg/drum, 20’FCL: 9 ton with pallet; 10 ton without pallet. 40’FCL: 18 ton with pallet; 20 ton without pallet.‍

Storage: 

Keep clean and dry, out of the direct sun and moisture.

Applications:  

Tile Adhesives

• ‍Better workability: lubricity and plasticity of plaster is ensured, mortar can be applied easier and quicker.
• Good water retention: prolonged opening time will make tiling more efficient.
• Improved adhesion and sliding resistance: especially for heavy tiles.‍

Dry mixed mortar

• ‍Easy dry mix formula due to cold water solubility: lump formation can be easily avoided, ideal for heavy tiles.
• Good water retention: prevention of fluid loss to the substrates, the appropriate water content is kept in mixture which guarantees longer concreting time.‍

Cement/Gypsum based Plaster

• ‍Increased water demand: increased open time, expanded spry area and more economical formulation.
• Easier spreading and improved sagging resistance due to improved consistency.‍

Wall putty/Skimcoat

Water retention: maximized water content in slurry.

Anti-sagging: when spreading a thicker coat corrugation can be avoided.

Increased mortar yield: depending on the weight of the dry mixture and appropriate formulation ,HPMC can increase the mortar volume.

Exterior Insulation and Finish System ( EIFS )

• ‍Improved adhesion.
• Good wetting ability for EPS board and substrate.
• Reduced air entrancement and water uptake.‍

Self-leveling

Protection from water exudation and material sedimentation.

No effect on slurry fluidity with low viscosity

HPMC, while its water retention characteristics improve the finish performance on the surface.

Crack Filler

• ‍Better workability: proper thickness and plasticity.
• Water retention ensures prolonged work time.
• Sag resistance: improved mortar bonding ability.‍