Water based Wetting & Dispersing Agent HXFS04
Wetting and Dispersing Additives
Technical Information
water-based wetting & dispersing agent HXFS04 is a sodium polycarboxylate anionic surfactant (sodium polyacrylate polymer solution) that appears as a colorless clear liquid with 45% active content. It offers low foaming, excellent dispersion efficiency, reduced grinding viscosity, improved gloss, leveling, and storage stability, while enhancing film water resistance and preventing floating/flooding. Ideal for coated paper, wWater-soluble paints, and architectural coatings, it enables low-viscosity formulations with minimal dosage and no need for additional wetting agents.
Overview:
Main Composition:
Sodium polyacrylate polymer solution
Why Choose HXFS04?
Water based Wetting & Dispersing Agent HXFS04 is Honor Pigments’ premium sodium polycarboxylate anionic surfactant engineered for high-performance waterborne coating systems. Unlike conventional ammonium salt dispersants that can cause yellowing and pH drift during storage, HXFS04’s sodium polyacrylate backbone delivers exceptional color stability and consistent viscosity control across a wide pH range (6–10). Industrial users report 25–40% reduction in grinding time compared to standard polyphosphate dispersants, translating to measurable energy savings and throughput gains in high-volume architectural paint production. In coated paper manufacturing, HXFS04 provides superior calcium carbonate dispersion at filler loading levels up to 65%, achieving target brightness and opacity with approximately 15% less titanium dioxide by enabling more efficient pigment spacing. For exterior wall coatings, its hydrophobically modified polymer structure creates a water-resistant film that maintains gloss retention after 1,000+ hours of accelerated weathering (QUV-B). Compared to HXFS03—Honor’s block copolymer dispersant designed for resin-free pigment concentrates—HXFS04 excels in cost-sensitive applications where low-foam performance and filler dispersion efficiency are the primary requirements, particularly in highly filled architectural systems and coated paper formulations where the fast-breaking foam characteristic eliminates defoamer addition in most cases.
Physicochemical Parameters:
| Parameter | Value |
| Appearance (25°C) | Colorless clear liquid |
| Solvent | Water |
| Active Content | 45% |
Parameter Interpretation:
Appearance (25°C): The colorless clarity confirms the sodium polyacrylate polymer is fully dissolved without phase separation, ensuring consistent dosing accuracy and zero tint contribution to the final coating—critical for white and pastel architectural paints.
Solvent: Water as the sole carrier solvent makes HXFS04 inherently VOC-free (compliant with EU Directive 2004/42/EC) and compatible with all waterborne formulations without introducing co-solvent compatibility challenges or regulatory labeling requirements.
Active Content (45%): The 45% active polymer content represents the optimal balance between dispersing efficiency and formulation flexibility—concentrated enough to minimize freight and storage costs per active kilogram, yet sufficiently fluid for direct pump metering in automated production lines without pre-dilution.
Product Characteristics:
Hydrophobically modified sodium polyacrylate polymer dispersant
Reduces grinding viscosity and improves coating storage stability
Enhances gloss and leveling properties
Higher dispersion efficiency than conventional wWWater-resistant dispersants (enables lower dosage)
Effectively improves film water resistance, especially suitable for high-gloss coatings
Excellent dispersion allows low-viscosity coatings/pastes with minimal addition
Maintains stable viscosity without fluctuation
Eliminates floating/flooding issues through superior pigment dispersion
Provides sufficient wetting properties without additional wetting agents
Generates fast-breaking foam with short drying time for better coating application
Applications:
Architectural coatings (exterior/interior walls)
Recommended Dosage:
Inorganic pigments: 0.1-1%
(The above dosage is for reference only. Optimal dosage should be determined through testing.)
Addition Method:
WWWater-soluble, can be added directly
Storage & Packaging:
Non-toxic, non-flammable.
Shelf life: Minimum 12 months from production date when stored unopened in original containers at 4°C-40°C.
Packaging: 25kg & 200kg plastic-lined iron drums; 1000kg IBC totes.
Why Choose Honor Pigments?
- 🌍 Global Export Expertise — Trusted by customers in 40+ countries for consistent quality and reliable supply
- ✅ Strict Quality Control — ISO 9001 certified with batch-to-batch consistency and zero-defect policy
- 💰 OEM Production Advantage — Competitive pricing without compromising pigment performance
- 🧪 Technical Support — Free color matching, formulation advice and sample testing before bulk order
📩 Need more details?
Request TDS, SDS, or a free sample for testing.
Frequently Asked Questions — HXFS04
What is the difference between HXFS04 and conventional sodium polyacrylate dispersants?
HXFS04 is a hydrophobically modified sodium polyacrylate, which provides enhanced water resistance in the dried film compared to unmodified polyacrylates. The hydrophobic modification reduces the dispersant’s water sensitivity after film formation, making it particularly suitable for exterior architectural coatings and high-humidity environments. Standard sodium polyacrylates, while effective dispersants, can contribute to water spotting and reduced wet-scrub resistance in finished coatings due to their inherent water solubility.
How does the low-foaming property of HXFS04 benefit coating production?
Low-foaming dispersants like HXFS04 minimize air entrainment during high-speed dispersion, eliminating the need for additional defoaming agents in many filled formulations. This reduces raw material costs, simplifies the additive package, and shortens production cycle time. In application, reduced foam prevents surface defects—such as craters, pinholes, and orange peel—that compromise coating appearance and protective performance, while fast-breaking foam allows quicker tank turnover between batches.
What is the recommended dosage of HXFS04 for different pigment and filler types?
For inorganic pigments and fillers (calcium carbonate, clay, titanium dioxide), the recommended dosage is 0.1–1.0% based on total pigment/filler weight. The exact optimal dosage should be determined through grind-resin demand curve testing in the target formulation. HXFS04’s high dispersion efficiency means it typically requires 20–30% less active dosage than conventional ammonium polyacrylate dispersants to achieve equivalent viscosity reduction and gloss development, though actual performance depends on the specific pigment grade and desired fineness of grind.
Can HXFS04 be combined with HXFS03 in the same coating formulation?
Yes, HXFS04 and HXFS03 can be used together for formulations requiring both cost-efficient filler dispersion (HXFS04) and premium organic pigment stabilization (HXFS03). A common approach is to disperse inorganic fillers with HXFS04 first in a separate mill-base, then incorporate HXFS03-stabilized organic pigment pastes during the letdown phase. When co-formulating, conduct compatibility testing to confirm no competitive adsorption or viscosity anomalies occur between the two dispersant chemistries.