What is HEMC?
Hydroxyethyl methyl cellulose (HEMC) is a non-ionic cellulose combined ether made from cotton and timber via alkalization, ethylene oxide and methyl chloride etherification. HEMC is extensively used in water-based latex coatings, building and constructing materials, printing ink, oil drilling and different fields. Its residences are comparable to HPMC, however the presence of hydroxyethyl makes HEMC extra soluble in water, the answer is extra like minded with salt, and has a greater condensation temperature.
1, in the pharmaceutical field, hydrophilic gel framework materials and pharmaceutical excipients for the preparation of sustained-release preparations are widely used, including oral tablets, suspensions, local preparations, porogens and coating agents.
2, in the field of food processing, it is used for bonding, emulsification, film-forming, thickening, suspension aid, dispersion, water retaining agent, etc.
3, in the field of daily chemical industry, it is used as an additive for toothpaste, cosmetics, detergent, etc.
4, in the field of building materials, it is used as a gelling agent and water retaining agent for cement, gypsum and lime, and is an excellent admixture for powder building materials.