HPMC is a widely used construction chemical admixture in tile adhesives. It is added to the adhesive formulation as a thickener, water-retention agent, and adhesive strength enhancer.

HPMC (Hydroxypropyl Methyl Cellulose) is commonly used as an additive in tile adhesive formulations to improve their properties. HPMC acts as a thickener and water-retaining agent, which helps to increase the workability of the adhesive and prevent it from drying out too quickly. It also helps to enhance the adhesive strength of the adhesive, ensuring that the tiles stay firmly in place. Additionally, HPMC helps to reduce shrinkage during the curing process, ensuring that the tiles remain level and do not shift.

Some of the benefits of using HPMC in tile adhesives include:

1. Improved workability: HPMC helps to improve the workability of the tile adhesive, making it easier to apply and spread evenly on the surface.

2. Enhanced adhesion: HPMC helps to enhance the adhesive strength of the tile adhesive, ensuring that the tiles stay firmly in place.

3. Increased water retention: HPMC helps to improve the water retention of the tile adhesive, preventing it from drying out too quickly and ensuring that it cures properly.

4. Reduced shrinkage: HPMC helps to reduce the shrinkage of the tile adhesive during the curing process, ensuring that the tiles remain level and do not shift.

When selecting an HPMC powder for use in tile adhesives, it is important to choose a product that is compatible with the other ingredients in the formulation and that meets the desired specifications for viscosity, water retention, and adhesive strength. It is also important to consider factors such as the purity and consistency of the product, as well as the reliability of the manufacturer.