PolyColor Dyes 56gr. can. -Special pigments for polyurethane

PolyColor Dyes are oil-based liquid dyes formulated specifically for polyurethane systems: rubbers, resins and foams. They are highly concentrated, meaning a minimal amount colours large volumes of material with excellent dispersion and colour consistency. They are not compatible with silicones or polyester resins.

Technical specifications

What it is used for

PolyColor Dyes are designed to mass-colour any polyurethane system before pouring or application. They allow you to achieve solid colours, tinted transparencies or special effects depending on the amount used and the type of base polyurethane. They are especially useful when working with clear resins such as EasyFlo Clear, designed specifically to be pigmented.

• Colouring polyurethane rubbers for moulds and flexible parts
• Pigmenting rigid or semi-rigid polyurethane resins for rotomoulding and casting
• Tinting rigid and flexible polyurethane foams
• Creating dramatic colour effects or soft tones by adjusting the dose
• Achieving coloured transparencies in clear resins
• Production of decorative pieces, props, special effects and prosthetics
• Colouring functional polyurethane parts in short runs

How to use it

1. Shake or stir the jar thoroughly before use to homogenise the pigment, as it may settle over time.
2. Weigh the total polyurethane you are going to prepare (component A + component B) to calculate the correct pigment dose.
3. Add the pigment to component A (polyol) before mixing with component B (isocyanate). The standard dose is 0.5% by total weight of the mixture.
4. For white and flesh tones, you can add up to 2% of the total weight. Do not exceed these doses to avoid curing problems.
5. Mix component A with the pigment until you obtain a uniform, streak-free colour.
6. Add component B and mix the complete system according to the instructions of the polyurethane you are using.
7. Pour, rotate or apply the pigmented material following the standard process for the base product.

Usage tips

Always do a colour test first

The colour of the pigment in the jar does not always match exactly the final result in the cured part. The shade may vary depending on the type of polyurethane, the opacity of the system and the amount of pigment used. Always carry out a small test with a few grams before pigmenting a large casting. If you are looking for a translucent effect, work with clear resins such as EasyFlo Clear and low pigment doses.

Always mix the pigment into component A

Always add the PolyColor Dye to component A (polyol) and mix it thoroughly before incorporating component B. This ensures homogeneous dispersion throughout the mass and avoids streaks or unpigmented areas. Never add the pigment to component B or directly to an already-started mixture, as working time is reduced and you will not achieve uniform dispersion.

Storage and preservation

Close the jar tightly after each use. Store the pigment in a cool, dry place away from direct light. Before each session, stir the contents thoroughly even if it appears homogeneous, as the oil base can separate over time. A well-stirred pigment guarantees consistent results from one use to the next.

Frequently asked questions