Hydroxypropyl methylcellulose, also known as hypromellose and cellulose hydroxypropyl methyl ether,the abbreviation is HPMC,has the appearance of a white powder. It uses highly pure cotton cellulose as a raw material and is specially formulated under alkaline conditions. Prepared by etherification. It can dissolve in water and some solvents, and has the characteristics of thickening, water retention and adhesion.High transparency, stable performance, different specifications of products with different gel temperature, solubility with the viscosity, the lower the viscosity, the greater the solubility, different specifications of HPMC performance has some differences, HPMC in water solution is not affected by pH value.
When it is added to the putty, It can make the putty powder dry more slowly to retain water; it can also be thickened to suspend and keep the solution uniform and consistent, anti sagging; lubricating and good workability.