DEUTERON VT 819 is a thickener developed by DEUTERON GmbH, a company specializing in additives for the coating industry. It's composed of polysaccharides, particularly xanthan gum, with surface modification using glyoxal. This modification delays the hydration properties of the thickener, making it easier to disperse and use.
The product offers several advantages:
- Wide Application Range: It can tolerate a broad range of temperatures and pH levels, except extreme acidic or alkaline conditions.
- Structural Viscosity: It creates a strong structure viscosity, meaning it maintains the viscosity under shear stress and returns to base viscosity quickly after the stress is removed. This property prevents settling of pigments and fillers in coatings and avoids separation of liquid phases during storage.
- Compatibility: It's compatible with various binders and thickeners commonly used in the coating industry.
- Applications: It finds utility in various applications such as general viscosity adjustment, reducing floating/settling of waxes and pigments, improving stability/anti-sagging properties, and preparing stable gels.
- Dosage and Processing: The dosage depends on the specific requirements but generally falls in the range of 0.1% to 1.0%. It's recommended to add the thickener to systems with a pH between 5 and 7 for lump-free dispersion. The pH can then be adjusted above 7 without issues.
- Safety and Storage: It's not classified as a dangerous product according to regulation and has a shelf life of 24 months under specified storage conditions.
- Special Considerations: It's emphasized that a pH above 7 is necessary to activate the thickening properties. For acidic solutions, other products like Deuteron VT 920 and Deuteron VT 930 are recommended.
DEUTERON GmbH has been in the business of developing and selling such additives since 1977 and has become a significant player in the national and international paint, lacquer, and coating industry.