Dispex® CX 4320 is a polymeric dispersing agent produced by BASF, specifically designed for dispersing inorganic fillers and pigments in various paint formulations. Here's a detailed overview of what it is and its key features:
Product Overview:
- Brand: Dispex®
- Product Name: CX 4320
- Type: Dispersing Agent
- Chemical Nature: Sodium salt of a carboxylic acid copolymer in water.
Key Properties:
- Physical Form: Yellowish liquid.
- Concentration (Dry Content): Approximately 25%.
- pH Value: Around 10.5.
- Viscosity: Approximately 50 mPa·s.
- Average Molecular Mass: Approximately 12,000 g/mol.
- Density: Around 1.11 g/cm³.
Features and Benefits:
- Effective Dispersion:
- Excellent at dispersing inorganic fillers and pigments.
- Suitable for high gloss, semi-gloss, and highly filled interior paints.
- Improves Paint Properties:
- Enhances gloss and reduces haze.
- Improves wet scrub resistance.
- Enhances blocking resistance.
- Excellent stability with zinc oxide (ZnO).
Application Details:
- Recommended Concentrations:
- Dosage generally ranges from 0.2% to 1.0% of the total formulation.
- In critical formulations, dosages can be increased up to 2%.
Storage and Handling:
- Storage Instructions:
- Should not come into contact with metals or alloys that are prone to corrosion.
- Always store in tightly closed containers.
- Ensure the air in storage tanks is saturated with water vapor to prevent evaporation.
Applications:
- Primarily used in:
- High gloss paints.
- Semi-gloss paints.
- Highly filled interior paints.
Advantages:
- Dispersion Efficiency: Provides excellent dispersing efficiency for inorganic pigments and extenders.
- Gloss Improvement: Reduces haze and improves the gloss of the paint.
- Resistance Properties: Enhances wet scrub and blocking resistance.
- ZnO Stability: Ensures stability when used with zinc oxide in formulations.
Safety and Compliance:
- Safety Measures: Adhere to the safety instructions provided in the safety data sheet (SDS). Use appropriate protective and workplace hygiene measures when handling the product.
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