Lansperse SPA is an anionic polymeric dispersing agent developed for the effective dispersion and stabilisation of pigments and mineral fillers in water‑based formulations. It functions by promoting rapid pigment wetting during
the grinding process and providing a combination of electrostatic and steric stabilisation, which helps to prevent flocculation and re‑agglomeration of particles. This results in improved dispersion efficiency, enhanced colour strength, and consistent particle size distribution.
In aqueous systems, Lansperse SPA supports the formation of stable, high‑solids dispersions with good viscosity control, contributing to improved formulation stability during processing, storage, and application. Its polymeric
structure enables strong adsorption onto pigment surfaces, aiding long‑term dispersion stability and reducing issues such as settling or floating. Lansperse SPA is particularly suited for use in coatings, inks, and construction formulations where reliable pigment dispersion and formulation robustness are required.
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Key Features
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• Effective pigment and filler dispersion - Promotes rapid wetting and uniform dispersion of inorganic pigments and mineral fillers in water‑based systems.
• Electrostatic and steric stabilisation - Provides reliable stabilisation to prevent flocculation and re‑agglomeration, supporting long‑term dispersion stability.
• Supports stable, high‑solids formulations - Enables good viscosity control and consistent performance during processing, storage, and application.
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Applications
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Aqueous Pigment Dispersions
- An APE‑free and VOC‑free dispersing agent for water‑based pigment dispersions, providing effective wetting and stabilisation of inorganic pigments.
Titanium Dioxide Dispersion
- Particularly recommended for the dispersion of Titanium Dioxide, delivering improved pigment wetting, dispersion efficiency, and colour development.
High‑Solids Pigment Concentrates
- Suitable for the preparation of high‑pigment‑loading dispersions. When used in combination with Kemectant EB3 and Lansperse DS200W, pigment loadings of up to 70% can be achieved.
Water‑Based Coatings & Inks
- Used in paints, coatings, and printing inks to improve dispersion stability and prevent flocculation and re‑agglomeration during processing and storage.​
Specification
Appearance at 25°C
Clear to hazy liquid free from foreign matter
pH (neat)
6.5 - 8.5
Solid content
42.0 - 46.0
Typical Properties
Composition
Sodium poly acrylate
Specific gravity at 20°C
1.28
Flash point closed cup °C
>150
Odour
Mild
Solubility in water
Soluble
Viscosity at 25°C (cP)
251
Pour point °C
<0