Asahi Exhibition Building Chemical Material Co.,Ltd.

• Product Description:

Hydroxypropyl methylcellulose is a non-ionic cellulose ether made from quality cotton as the main raw material through a series of etherification reactions. Hydroxy propyl methyl cellulose (HPMC) are odorless, tasteless and nontoxic white powders, which can dissolve in cold water and form transparent viscous solution. They are characterized by thickening, adhesion, dispersion, emulsification, film formation, suspension, adsorption, gel-ation, surface activity, water retention and colloid protection. 

• Performance in building materials:

In building materials, the addition amount of HPMC is very low, only 0.1%-1%, but it plays an irreplaceable role and can significantly improve the water retention, fluidity and lubricity of building materials. Building materials added with HPMC are easier to mix and use, improve the work efficiency of construction workers, extend the open time, improve the bonding strength, and form a smooth and delicate surface coating.

The key role of HPMC in putty powder:

- Excellent water retention

- Long open time

- Good smooth work ability

The key role of HPMC in tile adhesive:

- Good workability, Easy spreading, No stickiness

- Good sag resistance

- Long adjusting time

The key role of HPMC in mortar:

- Good water retention

- Good spraying and pumping performance

- Cement hydration is more complete for better bond strength and structure.

- Resistance to dry shrinkage

The key role of HPMC in gypsum-based mortar:

- Fast dissolution speed

- Good adhesion

- Easy pumping and good sag resistance.

• Product Parameters:

Item	Unit	Standard Specifications
Appearance	––	White powder, free flowing
Loss on drying	%	4-6%
Residue	%	< 5%
Methyl	%	19-22%
Hydroxypropyl	%	6-12%
Ph value(25℃)	––	6-8.5(neutral)
Gel temperature	°C	65 degree/ 75 degree
Viscosity (2.5%,25℃)	MPa.s	Main 100,000 150,000 200,000
degree of fineness	mesh	100 mesh, >96% 80 mesh, >100%
Apparent density	g/cm³	0.4-0.6
proportion	g/L	420-520
Surface Tension (2% solution)	dyn/cm	42-56
Water retention	%	≧92%以上
Light Transmittance	%	≧65%
Carbonization temperature	℃	280-300
Discoloration temperature	℃	190-200

Packaging and storage: 25 kg/bag

Note: The product is packaged in polypropylene woven bags, each with a net weight of 25kg. When storing, place in a ventilated and dry place indoors, pay attention to moisture. Pay attention to rain and sun protection during transportation.