- Cellulose, the primary structural component of plant cell walls, is the most abundant organic polymer on Earth. Hydroxyethylation, the process by which HEC is derived, enhances the solubility of cellulose in water, making it suitable for applications where pure cellulose would be insoluble. The degree of substitution, or the percentage of cellulose's hydroxyl groups replaced by hydroxyethyl groups, determines the properties of the final product. Higher substitution rates lead to increased solubility and viscosity.
- In the pharmaceutical industry, HPMC is used as a binder, disintegrant, and film-forming agent in tablets and capsules. It helps to hold the tablet together and ensure that it disintegrates properly in the body. HPMC is also used in the production of controlled-release formulations, where it helps to regulate the release of medication over a period of time.
- China's redispersible powder industry has also benefitted from the government's push towards sustainable construction practices
Answer: hot water solution method: because HPMC is not dissolved in hot water, so the initial HPMC can be evenly dispersed in hot water, then quickly dissolved when cooling, two typical methods are described as follows:
1) Put the required amount of hot water in the container and heat it to about 70℃. Under the slow stirring gradually add hydroxypropyl methyl cellulose, HPMC began to float on the surface of the water, and then gradually form a slurry, the slurry cooling under the stirring.
2) Add 1/3 or 2/3 of the required amount of water into the container, and heat to 70℃, according to the method of 1), disperse HPMC, prepare hot water slurry; Then add the remaining amount of cold water to the hot slurry, stirring and cooling the mixture.
Powder mixing method: HPMC powder and a large number of other powdery material ingredients, mixing fully with a blender, then add water to dissolve, HPMC at this time can dissolve, and do not stick together, because each small corner, only a little bit of HPMC powder, water will dissolve immediately. - Putty powder and mortar production enterprises are using this method. [Hydroxypropyl methyl cellulose (HPMC) is used as thickening agent and water retaining agent in putty mortar.]


5. Medical devices:

MH25M FP、MK30M FP

Answer: The content and viscosity of hydroxypropyl, most users are concerned about these two indicators. Hydroxypropyl content is high, water retention is generally better. High viscosity, water retention, relative (but not absolute) is better, and high viscosity, better to use in cement mortar.
MK30M FP、MT4031、MT5503
