Colourtech Polyester Pigments are stable dispersions of dry organic/ inorganic pigment powders in an unsaturated/ non- styrenated polyester resin.  They are used for coloring Fiberglass Reinforced Plastics (FRP).  The pigment dispersions are free from plasticizers.  The base resin is manufactured in-house. This carrier resin combines chemically with the moulding grade of commercial resins during curing. 

There are 72 opaque shades in the Polyester range and about 12 translucent shades (standard shades).  Special colors are also custom matched as per customer`s requirement.

Properties of the pigment:
The base pigments are selected based on its properties such as:

1. Light Fastness
2. Heat Resistance
3. U.V. Resistance
4. Outdoor Durability
5. Chemical Resistance
6. Electrical Properties
7. Coverage Properties
8. Stability
9. Uniform Dispersion

Usage Levels:  The following is a recommended usage level of Colourtech Polyester Pigment with commercial grades of resins. The percentage loading listed below is to be calculated on the weight of the molding resin

8-12 % For Gel Coats

4-6% For Laminates

8-10% For SMC/DMC Mouldings

1-4% For Translucent Sheets

4-6% For Filled Castings

8-10% For Pultrusions

Insufficient pigments may lead to non- uniformity of color and other surface defects. Higher pigmentation levels will provide better color uniformity, color depth, brightness and longer durability.