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Elementis Deqian DAPRO U-99 is a special surface modifier for aqueous systems under Elementis Deqian, specially designed for substrate wetting, coating defect optimization and leveling performance improvement of aqueous coating systems. It can effectively solve coating problems caused by low surface tension additives,
Excellent interlayer adhesion - Optimizes coating interlayer bonding force, no poor interlayer adhesion problems
Improved substrate wetting - Promotes uniform coating on hard-to-wet/contaminated substrates, improves substrate adaptability
Coating defect elimination - Reduces pinholes, fish eyes and scratches, solves surface problems caused by low surface tension additives
Optimized leveling performance - Improves coating flow and leveling, ensures smooth and uniform coating surface
Compliant and environmental formula - APE-free and silicone-free, non-volatile content complies with FDA 21CFR175.300
Water-based industrial coatings - Various water-based industrial protective coatings, improve substrate wetting and leveling
Water-based wood coatings - Water-based wood coatings, eliminate pinholes and improve film formation flatness
Water-based inks - Water-based printing inks, optimize color development and substrate adhesion
Water-based leather finishing liquids - Leather water-based finishing materials, improve the uniformity of the finishing layer
Water-based architectural coatings - Water-based interior and exterior wall coatings, improve construction leveling and substrate wetting
| Model | DAPRO U-99 |
| Brand | Elementis Deqian |
| Chemical Type | Aqueous surface modifier/wetting and leveling agent |
| Solid Content | 50% |
| Flash Point | 122°F/50℃ |
| Weight per Gallon | 8.4 lb |
| Specific Gravity (25°C) | 1.01 |
| Surface Tension | 33 dynes/cm (0.5% in water) |
| Appearance (25°C) | Pale yellow transparent liquid |
Q1: What types of pigment systems is DAPRO U-99 especially effective for?
A: DAPRO U-99 demonstrates strong wetting performance with inorganic pigments such as titanium dioxide and iron oxides, as well as many organic pigments commonly used in architectural and industrial coatings. Its molecular structure supports rapid interfacial stabilization during dispersion.
Q2: How does DAPRO U-99 contribute to improved coating stability and appearance?
A: By reducing surface tension and promoting uniform pigment distribution, DAPRO U-99 helps minimize flocculation and settling during storage. This contributes to consistent gloss, color strength, and reduced haze in the final film.
Q3: Is DAPRO U-99 compatible with common water-based resin systems?
A: Yes — DAPRO U-99 is formulated for compatibility with a broad range of acrylic, styrene-acrylic, and vinyl acetate-based emulsions, as well as many water-reducible alkyds and polyurethane dispersions.
Q4: What is the recommended addition point for optimal performance?
A: For best results, DAPRO U-99 should be added during the pigment grinding or premix stage, prior to full dispersion. It may also be incorporated into the let-down phase when fine-tuning rheology or surface behavior.
Q5: Can DAPRO U-99 be used in low-VOC or zero-VOC formulations?
A: Yes — DAPRO U-99 is a non-ionic surfactant with low volatility and no added solvents, making it suitable for use in low-VOC and zero-VOC compliant waterborne systems without compromising regulatory compliance or formulation integrity.
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