Paint manufacturers are under growing pressure to develop products that are durable, washable and easy to clean, while still delivering consistent appearance and performance.
Chemtrade South Africa supplies speciality mineral fillers from HPF The Mineral Engineers, including Siliplast 910, a feldspar-based solution that supports easy-to-clean, washable paint formulations.
Why functional fillers matter in paint formulations
Fillers do more than add volume to a paint formulation. The right functional filler can help improve mechanical strength, durability, surface performance and cleaning resistance.
Feldspar is a group of aluminosilicate minerals containing potassium, sodium or calcium. It is widely used in ceramics, glass and coatings, where it helps enhance durability and mechanical strength.
In paint, feldspar acts as a functional filler with high hardness, low oil absorption and chemical stability.
How Siliplast 910 supports washable paints
Siliplast 910 can support paint performance in several key ways.
Abrasion resistance and scuff defence
Feldspar has a high hardness, helping it resist burnishing and heavy scrubbing. This is important in washable paints, where repeated cleaning can cause softer fillers to wear away or create glossy patches.
The rigid mineral framework also helps prevent keys, furniture and bags from leaving deep permanent scuffs on painted surfaces.
Stain resistance and cleaner surfaces
Because feldspar has low oil and liquid absorption properties, household spills such as coffee, wine or crayons are less likely to seep into the underlying paint layer.
This helps stains remain closer to the surface, where they can be wiped away more easily.
Chemical stability
Feldspar is chemically stable and non-reactive. This means it can withstand exposure to household alkaline detergents, soaps and spray cleaners without degrading, dissolving or changing colour.
This makes it useful for paint systems where washability and long-term appearance are important.
Supporting high-quality interior paints
HPF’s material highlights the role of Siliplast 910 in easy-to-clean, washable interior emulsion paints.
By supporting wet abrasion resistance and overall surface performance, Siliplast 910 can help manufacturers develop higher-quality paint formulations for demanding interior applications.
HPF speciality fillers, supplied by Chemtrade
Chemtrade supplies speciality mineral fillers from HPF The Mineral Engineers as part of its broader speciality raw material portfolio.
Through Chemtrade, South African manufacturers can access product information, supply support and guidance on selecting the right filler solution for their formulation requirements.
Contact Chemtrade for Siliplast 910
For more information about Siliplast 910, HPF speciality fillers or product suitability for your paint formulation needs, please contact the Chemtrade team.

