Vanconol® AN-12 Suspension Stabilizer for Waterborne Systems
Vanconol® AN-12 Waterborne Suspension Stabilizer
Abstract
Vanconol® AN-12 is an inorganic nano suspension stabilizer developed to address pigment settling and flooding/floating problems in waterborne systems; its chemical type is a waterborne modified polyurea solution. Its core functions are to form a stable three-dimensional network structure, provide excellent shear-thinning behavior, and effectively prevent settling of high-specific-gravity powders. Compared with conventional solutions, it offers good chemical stability, a wide applicable pH range, and a low dosage (0.05%-0.2%), making it a suitable option for preventing pigment settling and flooding/floating in waterborne coatings, inks, and other systems.
Core Product Information
| Item | Specification |
|---|---|
| Product model | AN-12 |
| Chemical type | Inorganic nano material (waterborne modified polyurea solution) |
| Appearance | White or off-white powder, odorless |
| pH (2% aqueous solution) | 7.0-10.0 |
Key Performance Indicators
| Performance | Value |
|---|---|
| Suspension stability | Forms a stable three-dimensional network structure that effectively prevents settling |
| Rheological behavior | Excellent shear-thinning for easy application |
| Applicable systems | Waterborne systems, wide applicable pH range |
| Dosage | 0.05%-0.2% |
Main Features and Advantages
- Excellent suspension: Forms a three-dimensional network structure to effectively prevent pigment settling and hard caking
- Good rheology: Shear-thinning behavior: high viscosity at rest, lower viscosity during application
- Chemical stability: As an inorganic nano material, it offers good chemical stability and a wide applicable pH range
- Low dosage: A dosage of only 0.05%-0.2% achieves the desired effect
Recommended Application Fields
- Architectural coatings: Used in waterborne architectural coatings such as interior/exterior wall emulsion paints and stone-textured coatings; prevents pigment/filler settling, improves storage stability, and is especially suited to suspending high-specific-gravity pigments
- Industrial coatings: In industrial coatings such as metal protective coatings and automotive coatings, prevents pigment settling and flooding/floating, improving product consistency and application performance
- Waterborne printing inks: Used in flexographic and gravure printing ink systems; improves pigment dispersion stability and prevents settling and caking during storage
- Adhesives: Prevents filler settling in waterborne adhesives, ensuring storage stability and performance
- Ceramic slurries: Used for suspension stabilization of ceramic glazes and body slurries, improving process performance
- Cosmetic formulations: Suspends powdered pigments in cosmetics such as emulsions and creams to prevent phase separation
Usage and Recommended Dosage
- Addition timing: Can be added during the grinding stage for optimal dispersion, or added later to adjust system viscosity
- pH adaptability: No special pH adjustment is required; it works effectively in the pH 7-10 range
- Mixing: Thorough stirring is recommended to ensure uniform dispersion and the formation of a complete three-dimensional network structure
- Recommended dosage: The typical dosage is 0.05%-0.2%; the specific dosage should be determined by a dose-response study
Safety and Storage
Safety note: Wear appropriate protective equipment (such as safety goggles and a dust mask) during handling. Avoid inhaling dust; on skin contact, rinse with water; if it gets into the eyes, rinse immediately with plenty of water and seek medical attention.
Storage conditions: This is a solid product; store sealed in a dry, cool, ventilated place, away from heat, sparks and open flames.
Packaging: 25 kg bags.
Shelf life: 24 months from the date of manufacture under the specified storage conditions.
Frequently Asked Questions
Q1: How does AN-12 prevent pigment settling?
AN-12 forms a three-dimensional network structure in the waterborne system, providing steric hindrance to pigment particles and effectively preventing gravity-induced settling. This network maintains a relatively high viscosity at rest, thereby suspending the pigment particles.
Q2: What is shear-thinning behavior, and what is its practical significance?
Shear thinning means the material’s viscosity decreases under shear and recovers at rest. This allows the product to maintain high viscosity during storage to prevent settling, drop in viscosity under shear during application for easy coating, and recover viscosity afterward to prevent sagging.
Q3: How do I determine the dosage best suited to my system?
We recommend starting at 0.1% and preparing three samples at 0.05%, 0.1%, and 0.2%, then observing settling and testing rheological behavior to determine the optimal dosage. Adjust as needed based on the system’s pigment content and specific gravity.
Q4: Can this product be used together with other additives?
Yes. AN-12 is compatible with most waterborne-system additives, but pay attention to the addition sequence: it is generally recommended to add the dispersant first and then the suspension stabilizer, so that each performs optimally.