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EzFloMix™ - Kerox Universal Pigments
Usage Guidelines
Color Hues

To obtain the designed EzFloMix™ color mix 10% of the pigment on the weight of the Polyester/Vinylester, Epoxy or Polyurethane resin.  This guideline is applicable to all our opaque pigments.

To obtain lighter hues, the pigment can be used in the range 1% - 10% on the weight of the resin.

With our translucent pigments, the pigments should be used in the range 0.5% - 3% on the weight of the resin, to obtain translucent coloring.

Mixing Guidelines

EzFloMix™ is engineered to mix and disperse quickly and easily in Polyester/Vinylester, Epoxy or Polyurethane resins.

The pigment can be poured straight out of the jar into the resin.  Incorporation of the pigment into the resin is achieved by hand stirring with a mixing rod/stick or by mechanized mixing.

Small batches of resin can be mixed by hand stirring.  From a few grams of resin to a couple of Kg of resin, hand stirring works just great.

Mechanized mixing is recommended for large batches.  Large could be defined as 50 Kg and above, all the way up to a metric tonne (MT).  When coloring in MT quantity, the time of mixing can be reduced by first adding all the required quantity of pigment to a smaller quantity of resin (1:1 ratio), mixing it until it is homogeneous, followed by adding the rest of the resin and mixing it further.

Please note that pigment addition and premixing must be done prior to addition of the catalyst/curing agent and/or fillers.  After the pigment has been incorporated into the resin, the catalyst/curing agent and/or fillers can be dosed as required in the manufacturing process.
Gelcoat Guidelines

For gelcoats made from Polyester/Vinylester or Epoxy resin systems, it important that the gelcoat is built up to 20 mils -25 mils (0.5 mm - 0.635 mm) thick.  Gelcoats built to this thickness, with EzFloMix™ pigment loading of 10% on the gelcoat resin, will give a color that matches the pigment color.

A simple rule of thumb that we have found effective is to use:

200 grams of pigmented gelcoat
per square feet of surface.

Thickness of gelcoat should be measured using a mil gauge as a good manufacturing practice.

Laminate Layers

EzFloMix™ pigment loading in composite products built with laminate layers can have lower pigment loading (2% - 10%).  However, if it is desired to have laminate layers with a color matching the gelcoat layer, 10% of pigment loading on the resin is required.

Industrial Technologies

There are numerous industrial technologies for producing composites.  EzFloMix™ should be used as per the same recommendations as those for Color Hues and Mixing Guidelines on this page.  Historically, our customers have used the following proportions:

8% - 10% Gelcoats
4% - 6% Laminates
5% - 10% SMC and BMC
0.5% - 3% Translucent Moldings
4% - 10% Filled Castings
2% - 10% Pultrusion
5% - 10% Epoxy Flooring
High Gloss

Gloss is a function of surface roughness.

To obtain the highest gloss in molded composite products use EzFloMix™ in the resin and molds that are finished to a low surface roughness.

Patterns and Molds should be finished with step wise grit papers - 80, 120, 180, 220, 320, 400, 600, 800, 1000, 1200, 1500.


Composite products made by casting Polyester/Vinylester, Epoxy or Polyurethane resins should follow the same recommendations as those for Color Hues and Mixing Guidelines on this page.

For Polyurethane castings it is desirable to premix the pigment in the polyol/polyether component, followed by the degassing procedure prior to the addition of the iscocyanate (MDI/TDI) component.

For Polyester/Vinylester solid surface and cultured marble castings, the addition of the pigment to the resin, followed by mixing, prior to the addition of the filler (ATH/CaCO3) is recommended.
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