Natrosol HEC is a natural product and an excellent thickener with excellent biological stability against the attack of mold in solutions. It can provide good consistency in water-based inks, reduce splash effects, have good color development and compatibility, and can provide good dispersion and stability for various substances in the ink. HEC can provide good pseudoplasticity in water-based inks and has broad compatibility with pigments, emulsions, surfactants, emulsifiers and defoaming agents.
HEC thickening mechanism: High thickening efficiency is ensured through hydrogen bonding and main chain entanglement.
HEC has a range of products in different viscosity ranges
1. Water-based gravure ink
HEC has a high thickening efficiency for the water phase. The system can absorb a large amount of water without affecting the printing performance. It has excellent compatibility and is easy to add. It is mainly used in film substrates, decorative papers, etc. The main models are 250HBR, 250HHBR, and 250MHBR.
2. Water-based color paste
HEC has high thickening efficiency in water-based color pastes, excellent compatibility, good dispersion and stability, and is available in 250HBR, 250MHBR, 250HR and other models.
3. Water-based screen printing ink
Glass glaze, mainly used on solar white backplane glass, also known as glass ink, mainly uses hydroxypropyl cellulose, which has better solubility and stability.
Question: How to add hydroxyethyl cellulose using process?
Answer: It can be added during the grinding or high-speed dispersion and adjustment stages. Adding it directly during the grinding or high-speed dispersion stage can appropriately increase the viscosity of the grinding base material and improve the grinding efficiency. In the adjustment stage, it is recommended to add it in the form of an aqueous solution. The aqueous solution generally has a concentration of 2-3%. Generally, hydroxyethyl cellulose should be slowly added to water under constant stirring. After stirring for 3 to 5 minutes, alkali products such as pH adjusters should be added to help the cellulose fully dissolve.
Q: What are the differences between different product models of hydroxyethyl cellulose? Which models do you recommend?
Answer: The main difference between different models is the viscosity. We mainly recommend 250HBR and 250HHBR. Since the molecular weight and viscosity are the largest, the viscosity and molecular weight of 250HHBR are higher, and the thickening effect is better.