Hydroxypropyl methyl cellulose
is a kind of white or slightly yellowish powder, odorless, tasteless, and non-toxic. The product can be dissolved in cold water to form a transparent viscous solution. The aqueous solution of this product has surface activity so that it has emulsification, protective colloids and relative stability. As the product is non-ionic, and in the preparation process can be effectively purified by washing with hot water, it has a very low ash content.Hydroxypropyl Methyl Cellulose (HPMC
) is non-ionic cellulose ether made from natural high polymer cellulose by series of chemical processing. It is odorless, tasteless and non-toxic white powder, which could be dissolved in cold water to form transparent and thick solution. It possess thickening, binding, dispersing, emulsifing, film forming, suspending, absorbing, gelling, surface activity, water maintaining and protective colloid properties.
1,Particle size:98.5% passes through 100 mesh; 100% passes through 80 mesh.
2,Charring temperature: 280-300℃.
4,Real specific gravity:1.26-1.31.
5,Browning temperature: 190-200℃.
6,Surface tension:(2% water solution) 42-56dyn.cm.
7, Properties: Dissolved in water and some organic solvent such as ethanol. propyl alcohol. ethylene chloride, the water solution is of surface activity. It is a nonionic surface active agent. Gelation temperature is different for different grades. For example, among 60RT Hydroxypropyl Methylcellulose, 60 is gelation temperature, Namely, 2% water solution will form gelation at 60%.
, methyl cellulose can be used in building materials, coatings industry, synthetic resin, ceramic industry, medicine, food, textile, agriculture, household chemicals, etc.
1,Cement mortar: Improve the dispersibility of cement-sand, greatly improve the plasticity and water retention of the mortar, and have an effect on preventing cracks, which can enhance the strength of the cement.
2,Tile cement: Improve the plasticity and water retention of the pressed tile mortar, improve the bonding force of the tile, and prevent the powder.
3, asbestos and other refractory coating: as a suspension agent, fluidity improver, but also improve the adhesion to the substrate.
4, gypsum coagulation slurry: improve water retention and processability, improve the adhesion to the substrate.
5,Joint cement: added to the joint cement for gypsum board to improve fluidity and water retention.
6,Latex putty: Improve the fluidity and water retention of putty based on resin latex.
7,Stucco: As a paste instead of natural material, it can improve water retention and improve the bonding force with the substrate.
8,Coating: As a plasticizer for latex paint, it has an effect on improving the handling properties and fluidity of paints and putty powder.
9,Spray coating: It has good effect on preventing the cement or latex coating from sinking and improving the fluidity and spray pattern.
10,Cement and gypsum secondary products: used as an extrusion molding binder for hydraulic materials such as cement-asbestos, which improves fluidity and provides uniform molded articles.
11,Fiber wall: It is effective as a binder for sand walls due to its anti-enzyme and antibacterial action.
12,Others: It can be used as a bubble retaining agent (PC version) which acts as a thin clay mortar and a mud hydraulic operator.
Hydroxypropyl methyl cellulose HPMC CAS:9004-65-3