HPMC, which stands for hydroxypropyl methylcellulose, is a commonly used additive in the construction industry. It is a water-soluble synthetic polymer commonly used as a thickener, binder, emulsifier and stabilizer.
In construction, HPMC is commonly used as an ingredient in dry-mix mortars, which are premixed mixtures of cement, sand and additives, typically used in flooring, wall plastering and tile adhesives. HPMC helps improve the processability of these mixtures by increasing water retention and reducing the tendency to segregate.
HPMC can also be used to produce self-leveling compounds for leveling uneven surfaces before flooring is installed. In this application, HPMC helps improve the compound’s flow characteristics, making it easier to apply and achieve a smoother finish.
In addition, HPMC can be used as a component of Exterior Insulation and Finishing Systems (EIFS) for the insulation and finishing of exterior walls. In this application, HPMC helps to improve the adhesion of EIFS to the substrate and provides improved water resistance.
HPMC is a versatile and useful additive in the construction industry, helping to improve the performance and processability of many different construction materials and systems.