Quality paints primarily rely on pigment dispersions in the manufacturing process. Without proper dispersion of pigments, the paint will not hold up and maintain the expected colour standards. Pigments are insoluble particles that impart colour to paint and other materials. Proper pigment and additive selection are vital to ensure the finished paint or coating effectively displays the required colour.

There are different ways that pigments are dispersed in materials, including paints. Hence, understanding the properties and chemistry of the pigment is vital for knowing how it will be distributed. Properly dispersed pigments are crucial to the manufacture of good quality paints. Some of the essential properties that are required for good pigment dispersion are listed below:

• Stability

Pigments need to be chosen that have good lightfastness in order for the paint to have a resounding colour that does not fade with time.

• Viscosity

Another significant factor for paint and coatings is even thickness. Lower viscosity will ensure better distribution of pigment dispersions.

• Bright Hue

The pigments used in dispersions for paint manufacturing are chosen for their bright hues. The pigments, varnishes and other ingredients in the paint must dry to give a glossy finish in order to achieve the greatest vibrancy of colour.

• Optimal Pigment Size

Smaller particle size of pigment generally provides better transparency. The finer the grind of the pigment the greater the colour strength that can be achieved from a given quantity of pigment.

• Customization

One of the defining features of buying pigment dispersions from a company such as ours is that they can be customised, such as by specifying the shade and strength needed to suit a particular application.

Our portfolio of high-performance dispersions consist of wide range of quality products for use in Paint & Coating Industry. Fully compliant with all regulatory requirements of the global market, our portfolio offers you the right choice of COLOURANTS, whether your requirement is for Architectural, Decorative or Industrial Coatings.

DIY Universal Stainers – They are concentrated pigment dispersion in aqueous solution, binder free, APEO- free. Produced in a ready to use semi-fluid paste having a dispensing consistency suitable to tint water-borne systems, like decorative paints based on polymeric resin emulsions, enamels and so on.

COLOUR TINT Machine Colourants – It is a fluid, ready to use paste with machine dispensing consistency (both volumetric and gravimetric). Specifically designed for the tinting of water and solvent based architectural coatings.

Aqua Colour Hue Paste – Aqua Colour Hue Paste is line of Water Based Pigment preparations suitable for in-plant colouring of all types of water based Architectural Paints. It is a set of 11 colours suitable for Interior as well as Exterior purpose.

COAT TINT Industrial Colourants – COAT TINT colourants are designed for in plant as well as point-of-sell tinting of solvent borne industrial coatings. COAT TINT are universal in nature and are compatible with Alkyds – Long, Medium & Short Oil, wide range of Acrylic Polyols, Plasticizers, Polyurethanes, Epoxies, Nitrocellulose Lacquer, Melamine Formaldehyde, Chlorinated Rubbers, Additives.

Our entire product range of colourants is as per global quality standards. We offer our product range in small or bulk packing, as per the need for our customers. Our team of qualified technologists can develop custom shades as per our customer requirement. For more details on the same feel free to contact us!

Why is Particle Size Important?

Particle size of a material is extremely important because it influences several properties of the end product. It is a valuable indicator of quality and performance. It defines the functionality of the product in Coating Systems.

The particle size of pigments has long been recognized as important in defining the functionality of coatings systems. Particle size is related directly to the efficiency with which a pigment scatters light, with the scattering power increasing as particle size decreases. This in turn affects the opacity, tinting strength and the undertone associated with a given pigment. Reducing the particle size also improves the properties of the applied coating film, with both gloss and weather resistance increasing as the particle size decreases.

The particle size of pigments can affect the final appearance of the coated surface. For instance, a paint can be gloss, matt or satin, depending on the particle size. This effect is linked to phenomena of diffusion, reflection and refraction of light. Small particles produce uniform and glossier coatings, where the angle of incident light is close to the angle of reflected light. Rigid polymers and polyethylene modify the properties of the films. When the thickness of the film is too high, the quality of transparent and coloured coatings is affected. The finest particles reduce the imperfections of the film, whereas the chemical activity increases.

Keeping in mind the importance of low particle size, N.R.Colours Ltd has developed and started commercial operation of new grades of their product – TITOX® Micronized Buff Titanium Dioxide – The only available partial substitute of Titanium Dioxide.

NRC introduces new grades with very fine particle size and easily dispersible Micronized Buff Titanium Dioxide.

1. TITOX® NANO – Particle Size D.90 < 2 µ.
2. TITOX® ULTRA – Particle size D.90 < 5 µ.

These products find applications in all types of coatings for Industrial Paints.

Some of the applications are as below :

• Paints – undercoats & primers substitutes (in non-white undercoats and primers)
• Coil Coatings
• Constructive Chemicals (Fillers)
• Powder Coatings
• Industrial Coatings [Non-White undercoats & primers]
• Automotive Coatings/Auto Refinishes [N.C.Putty, P.U.Putty, Other Putty]
• Furniture Coatings [Non-White undercoats & primers]
• Anti-Corrosive Paints
• Architectural Coatings
• Synthetic Enamels
• Water based [Interior 2^nd / 3^rd Quality]
• Plastic Master batches
• PVC Linolium
• Art Materials [Water Colours, Wax Crayon]