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Elementis Deqian Disponer 904S is a special wetting dispersant for medium and high polar solvent-based and solvent-free systems under Elementis Deqian, with a mixture of polymeric carboxylic acid and modified polysiloxane as the core component, specially designed to solve dispersion problems in multi-pigment systems. It has excellent pigment dispersion and wetting effects, can effectively prevent color separation when titanium dioxide is mixed with other pigments
Efficient anti-floating and anti-blooming - Thoroughly solve the floating color and blooming problems of titanium dioxide mixed with multi-pigments
Anti-sedimentation and hardening - Effectively avoid sedimentation, caking and hardening in pigment and filler mixed systems
No side effect advantage - Different from ordinary silicone oil, no coating defects such as craters
Leveling and performance improvement - Improve coating flatness, enhance scratch resistance and smoothness
Broad-spectrum system compatibility - Suitable for medium and high polar solvent-based and solvent-free multi-resin systems
Medium and high polar solvent-based coatings - Suitable for various medium and high polar solvent-based industrial and decorative coatings
Solvent-free coating systems - Suitable for solvent-free environmental coatings, improving dispersion and leveling effects
Ready-mixed paints and industrial paints - Various ready-mixed paints and industrial baking paints, ensuring color uniformity and storage stability
Gravure and screen printing inks - Solvent-based gravure and screen printing inks, improving printing clarity and gloss
Epoxy and polyurethane coatings - Two-component polyurethane and epoxy coatings, optimizing pigment dispersion and coating performance
| Brand | Elementis Deqian |
| Chemical Type | Wetting dispersant for solvent-based/solvent-free systems |
| Chemical Composition | Mixture of polymeric carboxylic acid and modified polysiloxane |
| Alias | Disponer 904S Dispersant, Anti-floating and Anti-blooming Additive |
| CAS No | Adapt to polymeric carboxylic acid and polysiloxane blend system |
| Appearance (25°C) | Yellow to brown clear liquid |
| Non-volatile Content | 49-51% |
| Solvent | Xylene / Diisobutyl ketone |
| Specific Gravity (25°C) | 0.92-0.95 |
| Acid Value | 180-220 mgKOH/g |
Q1: What is the primary function of Disponer 904S in coating and ink formulations?
A: Disponer 904S is a high-efficiency, non-ionic wetting agent designed to reduce surface tension, promote rapid substrate wetting, and enhance pigment dispersion stability—particularly in water-based architectural coatings, industrial paints, and flexographic inks.
Q2: Is Disponer 904S compatible with common thickeners and rheology modifiers?
A: Yes, Disponer 904S demonstrates good compatibility with associative and non-associative thickeners—including HEUR, HASE, and cellulose derivatives—without compromising viscosity development or causing phase separation under typical formulation conditions.
Q3: How should Disponer 904S be incorporated into a formulation for optimal performance?
A: It is recommended to add Disponer 904S during the let-down stage, after initial pigment grinding, to maximize interfacial activity and stabilize newly exposed pigment surfaces. Pre-dilution with water or co-solvent may improve uniform distribution in high-solids systems.
Q4: Does Disponer 904S contribute to foam generation or affect defoamer selection?
A: As a low-foaming wetting agent, Disponer 904S is formulated to minimize air entrapment and does not significantly interfere with silicone- or mineral oil–based defoamers. However, optimal foam control still requires careful balancing with the overall surfactant package.
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