Carboxymethyl cellulose (Carboxymethyl cellulose) is formed by the reaction of the hydroxyl group of the anhydroglucose unit on the cellulose chain with the etherification group (chloro Z acid or ethylene oxide);
It is a colorless amorphous substance soluble in water, aqueous alkali solution, ammonia and cellulose solution, insoluble in organic solution and mineral oil; it can be used as sizing, calendering and thickening agent in textile industry;
Structuring agent in paper and board production;
Reabsorption of impurities in synthetic cleaning agents;
Flotation agent for selecting copper-nickel and potassium ore;
Viscous suspension thickener and stabilizer when drilling oil and gas wells;
glue composition for wallpaper;
dry construction mix components;
Water latex paint components, etc.
Hydroxypropyl methylcellulose (Hypromellose, Cellulose) is made of highly pure cotton cellulose as a raw material, which is specially etherified under alkaline conditions, and does not contain any active ingredients such as animal organs and oils. Soluble in water and most polar and appropriate proportions of ethanol/water, propanol/water, dichloroethane, etc., insoluble in ether, acetone, and absolute ethanol, and swells into a clear or slightly turbid colloidal solution in cold water. The aqueous solution has surface activity, high transparency and stable performance.
HPMC has the property of thermal gelation. The product aqueous solution is heated to form a gel and precipitates, and then dissolves after cooling. The gelation temperature of different specifications is different. Solubility varies with viscosity. The lower the viscosity, the greater the solubility. Different specifications of HPMC have certain differences in their properties. The dissolution of HPMC in water is not affected by the pH value.
Post time: Apr-24-2023