Viscosity 200000/150000/100000 mpas hydroxy propyl methyl cellulose HPMC for tile adhesive, mortar, cement, detergent, gypsum Function of HPMC in gypsum products 1. Improves water retention and processability and improves adhesion to substrates. 2. Insensitive to the alkalinity of gypsum, it can quickly penetrate into various gypsum products without lumping. 3. No negative impact on the porosity of cooked gypsum products, ensuring the breathing performance of gypsum products. 4. Good retarding effect, does not affect the growth of gypsum crystals. 5. Suitable wet adhesion to ensure the bonding ability of the material to the substrate. 6. Greatly improves the construction performance of plaster products, easy to spread, no sticky knife.