Hydroxypropyl methylcellulose, also known as hypromellose, cellulose hydroxypropyl methyl ether, is obtained by using high purity cotton cellulose as a raw material and special etherification under alkaline conditions.
Solubility: soluble in water and some organic solvents, such as ethanol / water, propanol / water, dichloroethane, etc. The solubility in water is not affected by PH value. The aqueous solution has surface activity, high transparency and stableperformance; solubility changes with viscosity, the lower the viscosity, the greater the solubility ;
With decrease of content of methoxy group, gel point of HPMC increases, water solubility decreases, and surface activity also decreases.
HPMC also has the thickening ability, salinity, low ash content, PH stability, water retention, dimensional stability, excellent film-forming properties, and extensive resistance to enzymes, dispersion and adhesion.
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