Hydroxyethyl cellulose is a non-ionic water-soluble polymer made from cellulose, a natural polymer material, through a series of chemical processes. It is a white or yellowish, odorless and tasteless powdery solid substance, which can be dissolved in both cold water and hot water, and the dissolution rate increases with the increase of temperature. Generally, it is insoluble in most organic solvents. It is used as thickener and stabilizer in latex paint. It is easy to disperse in cold water with pH value less than or equal to 7, but it is easy to agglomerate in alkaline liquid, so it is generally prepared in advance for later use, or weak acid water or organic solution is made into slurry, and it can also be mixed with other granular The ingredients are dry mixed together.
The characteristics of hydroxyethyl cellulose:
HEC is soluble in hot or cold water, and does not precipitate at high temperature or boiling, which makes it have a wide range of solubility and viscosity characteristics, and non-thermal gelation.
It can coexist with a wide range of other water-soluble polymers, surfactants, and salts, and is an excellent colloidal thickener for solutions containing high-concentration electrolytes.
The water retention capacity is twice as high as that of methyl cellulose, and it has better flow regulation.
Compared with the recognized methyl cellulose and hydroxypropyl methyl cellulose, the dispersing ability of HEC is the worst, but the protective colloid ability is the strongest.
Excellent construction; it has the advantages of labor-saving, not easy to drip, anti-sag, good anti-splash, etc.
Good compatibility with various surfactants and preservatives used in latex paint.
The storage viscosity is stable, which can prevent the general hydroxyethyl cellulose from reducing the viscosity of latex paint during storage due to the decomposition of enzymes.
Post time: May-25-2023