FAQ

Hydroxypropyl methylcellulose (HPMC) is widely used in fields such as chemical engineering, construction, building materials, coatings, ceramics, and daily chemicals.

Water retention, thickening, improved workability, extended open time, anti-slip properties, crack resistance.

Store in a dry place normally for 2 years. Use it up as soon as it is opened and keep it sealed to prevent moisture.

No. Viscosity only represents the thickness. Water retention property is the core. For putty powder, a viscosity of around 100,000 is generally sufficient, while mortar requires a higher viscosity, around 150,000, to be effective. Choosing the right model is more important than blindly selecting high viscosity.

The main raw materials for Hydroxypropyl Methylcellulose (HPMC) include refined cotton, chloromethane, epichlorohydrin, and other materials such as soda ash, acid, toluene, isopropanol, etc.

Whiteness and fineness can be preliminarily screened via visual inspection; transmittance and specific gravity serve as the primary criteria for assessing intrinsic purity and structural integrity. By combining these four parameters, one can rapidly determine the quality grade of HPMC.

Bubbles in putty powder may be caused by the following two factors: (1) excessively high moisture content; (2) applying a new layer over the substrate before the underlying layer has fully dried—a practice that can also lead to the formation of bubbles.

HPMC primarily functions to retain water; starch ether mainly provides anti-slip properties and smoothness; and RDP primarily enhances adhesion and flexibility. The optimal results are achieved when these three components are used in combination.

Cement : 400 kg
Sand : 600 kg
Hydroxypropyl Methylcellulose (HPMC) :2 kg
Redispersible Polymer Powder : 4 kg
Starch Ether : 1 kg