Pigment filled

Feroca's paste pigments are high-concentration opaque colorants, formulated to be mixed directly into the mass of all types of resins. They are lead-free and available in a wide range of colours, making them the simplest and most effective solution for achieving uniformly coloured parts from the very first cast.

Technical specifications

What it is used for

These pigments are designed for mass colouring of resins, meaning the colour is integrated throughout the entire part and not just on the surface. They are ideal for casting, laminating or foaming processes where a uniform, opaque colour is required in the final result.

• Mass colouring of rigid polyurethane resins
• Pigmentation of rigid polyurethane foams and flexible foams
• Colouring of epoxy and polyester resins
• Special effects and props for theatre, film and television
• Manufacturing of decorative parts, scale models and coloured prototypes
• Fine arts, sculpture and model making
• Production of industrial parts where opaque colour is a functional requirement

How to use it

1. Calculate 3% by weight of the total resin you are going to use: that is the amount of paste pigment you need.
2. Take a small amount of resin (component A or the one with the lower viscosity) and mix it first with the pigment until you obtain a smooth, lump-free paste.
3. Once the pigment is well dispersed in that fraction of resin, gradually add the rest of the resin component while stirring continuously.
4. When the colour is perfectly integrated and uniform, add the hardener or component B in the ratio indicated by the resin manufacturer.
5. Mix the whole carefully to avoid incorporating air bubbles and proceed with the usual casting or application.

Usage tips

Pre-mixing for perfect dispersion

The key to avoiding streaks or colour spots is not to add the pigment directly to all the resin at once. Always pre-disperse the paste in a small amount of resin, stirring vigorously until there are no lumps or unpigmented areas. Only then incorporate the rest. This step makes the difference between a professional result and a poor one.

Colour mixing to expand the palette

The different paste pigment colours are compatible with each other and can be freely mixed before incorporating them into the resin. This allows you to create intermediate shades, pastels or custom tones without needing to purchase a specific reference for each shade. Experiment with small amounts before mixing a large batch.

Compatibility with other pigments and fillers

If you are looking for metallic or pearlescent effects, you can combine these opaque pigments with Magic Powder to achieve metallic sheen finishes while maintaining the opaque colour base. If you prefer translucent effects instead, the UltraColor translucent pigments are the right alternative. For polyurethanes with very specific colour requirements, also check out the PolyColor Dyes, specially formulated for this family of materials.

Frequently asked questions