(HPMC) Hydroxypropylmethylcellulose is used in the application of waterproof putty powder. The dosage varies depending on the local temperature and humidity, the quality of lime calcium powder, the formula of putty powder, and the quality of self-control products. The dosage is generally between 3 and 5 kilograms. The temperature should be adjusted higher in summer, and it can be added less in winter.
HPMC has good water retention, thickening, suspension, and workability in putty powder. Qualified cellulose can increase the hardness of later putty walls.
