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Hydroxypropyl Methyl Cellulose (HPMC) is a versatile hydrophilic polymer widely used in various industries, including pharmaceuticals, food production, cosmetics, construction, and personal care products. This cellulose derivative is prized for its unique properties such as good film-forming abilities, gel-forming capacity, and excellent adhesion characteristics. As demand for HPMC continues to grow, numerous manufacturers around the world are investing in the production of this crucial polymer.
Denne reaktion sker under kontrollerede forhold, hvor temperatur og tryk nøje overvåges. Typisk foregår reaktionen ved omgivelsestemperatur i en kontinuerlig reaktor, hvilket sikrer en jævn fordeling af hydroxyethylgrupperne. Mængden af indført ethylenoxid spiller en afgørende rolle for det endelige produkts viskositet og opløselighed i vand. Efter reaktionen stopper man ved at neutralisere overskydende ethylenoxid, ofte ved at tilsætte vand eller en syre.
hydroxyethyl cellulose manufacturing process
