Views:3 Author:Site Editor Publish Time: 2020-07-10 Origin:Site
Hydroxypropyl methylcellulose (INN name: Hypromellose), also simplified as hydroxypropyl methylcellulose (HPMC), is a variety of nonionic cellulose mixed ethers. It is a semi-synthetic, inactive, viscoelastic polymer .This product is industrial grade HPMC, mainly used as the dispersing agent for PVC production and as the main assistant used in producing PVC suspension polymerization.
It is also used as thickener, stabilizer, emulsifier, excipient, water retention agent, and film-forming agent etc.in producing petrochemicals, building materials, paint removers, agricultural chemicals, inks, textiles, ceramics, paper. cosmetics and other products.
HPMC are ethers of cellulose and propylene oxide. It is easily soluble in cold water but not soluble in hot water. It is non-ionic cellulose ether and is compatible with many surfactants and polymers such as starch, guar and alginates. Solutions of HPMC are pseudoplastic, some solutions show thixotropy.
Hydroxypropyl methylcellulose polymers are well-known for their ability to bind, retain water, thicken, form films, and provide many other performance benefits.
Regarding HPMC questions and answers 6. What is the proper viscosity of hydroxypropyl methylcellulose (HPMC)? ——Answer: Generally 10W is enough for putty powder, and the requirement for mortar is higher, and 15W-20W is better. Moreover, the most important role of HPMC is water retention, followed ...
3. What are the dissolution methods of hydroxypropyl methylcellulose (HPMC)?——Answer: Hot water dissolution method: Since HPMC does not dissolve in hot water, HPMC can be uniformly dispersed in hot water at the initial stage, and then quickly dissolve during cooling. Two typical methods are describe