Hydroxypropyl methylcellulose, also known as hypromellose and cellulose hydroxypropyl methyl ether, is made from highly pure cotton cellulose and is specially etherified under alkaline conditions.
The characteristics are different:
Hydroxypropyl methylcellulose: white or white fiber-like powder or granules, belonging to various non-ionic types in the cellulose mixture, this product is a semi-synthetic, inactive viscoelastic polymer.
Hydroxyethyl cellulose is a white or yellow, odorless, non-toxic fiber or solid powder, the main raw material is alkali cellulose and ethylene oxide etherification, which is a non-ionic soluble cellulose ether
Different uses:
In the paint industry, hydroxypropyl methylcellulose has good solubility in water or organic solvents as a thickener, dispersant and stabilizer. Polyvinyl chloride is used as a paint remover for suspension polymerization to prepare polyvinyl chloride, which is widely used in leather, paper products, fruit and vegetable preservation, textiles and other industries.
Hydroxypropyl methylcellulose: almost insoluble in absolute ethanol, ether, acetone; soluble in transparent or turbid colloidal solution in cold water, widely used in coatings, inks, fibers, dyeing, papermaking, cosmetics, pesticides, minerals Product processing, oil recovery and pharmaceutical industries.
Solubility varies:
Hydroxypropyl methylcellulose: almost insoluble in absolute ethanol, ether, acetone; soluble in clear or slightly cloudy colloidal solution in cold water.
Hydroxyethyl cellulose (HEC): It can prepare solutions in different viscosity ranges, and has good salt-dissolving properties for electrolytes.
Post time: Feb-20-2023