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 difference:
different characteristics
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.
Use is different
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.
different solubility
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: Dec-01-2022