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Elementis Deqian Disponer 903 is a special wetting dispersant for solvent-based coatings under Elementis Deqian, with modified polysiloxane as the core component, specially designed for various solvent-based coating systems. It can effectively prevent Benard cells in the coating film, completely eliminate floating color, blooming and streaking in multi-pigment systems, avoid color unevenness when adding during color mixing, significantly improve coating leveling
Excellent anti-floating and anti-blooming - Completely eliminate floating color, blooming and streaking in multi-pigment systems, improve coating uniformity
Anti-Benard cells - Effectively inhibit Benard cells in the coating film, optimize coating surface flatness
Strong color mixing assistance - Added during color mixing, avoid color unevenness, ensure color consistency
Improve coating performance - Enhance coating leveling, fluidity and gloss, improve coating appearance texture
High efficiency, low dosage and good compatibility - Compatible with most coating systems, excellent effect with a small amount of addition
Alkyd/amino resin coatings - Suitable for various alkyd and amino resin blended solvent-based coatings
Polyester/amino resin coatings - Suitable for polyester and amino resin systems, improve coating performance
Acrylic/amino resin coatings - Compatible with acrylic/amino resins, optimize coating appearance and leveling
Nitrocellulose lacquer systems - Suitable for various nitrocellulose lacquers, prevent floating color and blooming, improve gloss
Two-component polyurethane coatings - Suitable for two-component polyurethane solvent-based coatings, ensure coating uniformity
| Chemical Composition | Modified polysiloxane |
| Alias | Disponer 903 Wetting Dispersant, Solvent-based Anti-floating |
| CAS No | Adapt to modified polysiloxane system |
| Appearance (25°C) | Clear liquid |
| Non-volatile Content | 8.5-10.5% |
| Solvent | Xylene / Isobutanol |
| Specific Gravity (25°C) | About 0.85 (0.84-0.86) |
| Refractive Index (25°C) | 1.462-1.472 |
Q1: What types of pigment systems is Disponer 903 especially effective for?
A: Disponer 903 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 Disponer 903 contribute to storage stability in pigment concentrates?
A: By reducing interparticle attraction and supporting uniform particle distribution, Disponer 903 helps minimize settling and viscosity drift during long-term storage of color pastes and millbases, particularly in water-based systems.
Q3: Is Disponer 903 compatible with common co-additives like defoamers and rheology modifiers?
A: Yes — Disponer 903 is formulated to be compatible with a broad range of waterborne additives, including non-ionic surfactants, silicone and mineral oil defoamers, and associative and non-associative thickeners, when added at typical usage levels.
Q4: Can Disponer 903 be used in both ambient and high-shear dispersion processes?
A: Yes — it performs effectively across conventional low-shear mixing and high-shear dispersing conditions, delivering consistent wetting and stabilization whether incorporated pre-mix or during the grinding stage.
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