There are several types of hydroxypropyl methylcellulose HPMC, and what are their uses?

HPMC is divided into two types: instant type and hot melt type. The instant type disperses quickly in cold water and initially has no viscosity because the HPMC is only dispersed in the water without actually being dissolved. After about 2 minutes, the liquid gradually thickens and forms a transparent, viscous colloid. Hot-melt products will appear agglomerated in cold water, but will disperse quickly in hot water until the temperature drops to a certain level and the viscosity will gradually increase to form a transparent and viscous colloid. The hot-melt type is mainly used for putty powder and mortar. It may cause lumps in liquid glue and paint, so it is not suitable. The instant type is more widely used and can be used for putty powder, mortar, liquid glue and coatings without specific restrictions.

Hydroxypropyl Methyl Cellulose is widely used in building materials, coatings, synthetic resins, ceramics, medicine, food, textiles, agriculture, cosmetics, tobacco and other industries. According to the purpose, HPMC can be divided into construction grade, food grade and pharmaceutical grade. At present, most of the domestically produced HPMC is construction-grade Hydroxypropyl Methyl Cellulose. One of its main uses is in the construction field, especially in putty powder. About 90% of construction-grade HPMC is used to make putty powder, and the rest is used in putty powder. Cement mortar and glue and other fields.