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Oct. 18, 2024
HPMC (Hydroxypropyl Methyl Cellulose) and HEC (Hydroxyethyl Cellulose) are both commonly used cellulose ethers,
but they have some differences in chemical structure, function and application areas:
1. Chemical structure
HPMC (Hydroxypropyl Methyl Cellulose): HPMC is a synthetic polymer obtained by chemical modification of natural cellulose.
The hydroxyl part in its structure is replaced by methyl and hydroxypropyl groups.
HEC (Hydroxyethyl Cellulose): HEC is made from natural cellulose through ethylene oxidation reaction,
and its main substituent is hydroxyethyl group.
2. Main function
HPMC: It mainly plays the role of thickening, water retention, stabilization and forming a protective film.
It also has excellent anti-sagging and adhesion, which makes it maintain good coating thickness during construction.
HEC: The main function of HEC is thickening, stabilization and providing good rheology.
Its main advantage lies in its excellent rheology control ability, which makes the solution have better fluidity and dispersibility.
3. Main application areas
HPMC is commonly used in the construction, pharmaceutical, and food industries,
HEC is mainly used in paints, coatings, and personal care products, such as shampoos, lotions, and gels,
due to its high thickening ability and transparency.
Name: Molly.Wang
E-Mail:molly.wang@jtdf-rdp.com
Mobile:+86 156 5045 0156(Whatsapp)
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