What is the choice of HPMC viscosity when producing putty powder dry mortar?
What is the choice of HPMC viscosity when producing putty powder dry mortar? Methylcellulose MC and hydroxypropylmethylcellulose (HPMC) have stable chemical properties. mildew resistance and water retention, and are not affected by pH changes. The viscosity can be used from 50,000 to 200,000, but in…