Johson hydroxypropyl methyl cellulose 

 First, the physical properties: 
 This product is non-ionic cellulose ether, look for white powder, odorless and tasteless, soluble in water and most polar organic solvents (such as: dichloroethane) and an appropriate proportion of ethanol / water, propanol / water and so on. Aqueous solution of surfactant, high transparency and stable performance. HPMC thermal gelation nature of the product aqueous solution heated to form a gel precipitation, cooling and then dissolved, and the different products with different specifications gel temperature. Solubility varies with the viscosity, the lower the viscosity, the greater the solubility of HPMC of different specifications of its nature there are some differences of HPMC dissolved in water not affected by PH value. Particle size: 150 mesh greater than 100% pass rate. Bulk density :0.25-0 .70 g / (usually 0.5g / so), the proportion of 1.26-1.31. The color temperature :190-200 ° C, carbonization temperature :280-300 ℃. Surface tension: 2% aqueous solution 42-56dyn/cm. HPMC with a methoxyl content increased, the gel point decline, the increase in water solubility, surface activity also rose. HPMC with thickening row salt, low ash content, pH stability, water retention, dimensional stability, excellent film-forming, and a wide range of resistance to enzymatic dispersion, and adhesion characteristics 
 Second, the technical indicators: 
 The appearance of a white fine powder 
 Active content (%)> 93 
 Water content (%) <5 
 Salt content (%) <2.0 
 Ash (%) ≤ 1.0 
 PH value 7-8 
 The viscosity mpa.s 45 000 - 55 000 
 Fineness (mesh)> 150 mesh 
 Third, the application: 
 HPMC moisture content has a good water-holding capacity, even if it is used in the high water absorption of the substrate. HPMC can provide a good operating performance and resistance to vertical capacity mortar. HPMC non-ionic cellulose, can be compatible with many types of surfactants and water-based polymer. HPMC particles is relatively small, is more conducive to mixed with gypsum, lime, cement and other materials, these compounds dispersed in water, easy to agglomerate. Very suitable for cement, lime and gypsum-based plaster, mortar, adhesive mortar and similar products. 
 HPMC used for cement-based materials also have the following characteristics: 
 The effect of stronger thickening, water retention in the mortar; 
 To improve the operational performance of the material can make the material more smooth in operation, and increase mortar resistance to vertical capacity; 
 Increase the opening hours of the binder materials. 
 Fourth, Packing: Net weight 25 kg package 
 5, store: Place in a dry and clean place. Easy to moisture, this product is not danger.