Smart science to improve lives™
Smart Materials
  • Login | Register
Smart Materials

Liquid colour concentrates

Our up to 100% bio-based functional carrier fluids and polymeric dispersants offer a universal and sustainable way to enhance the colour and stability of liquid colour concentrates.

Boosting performance of liquid colour concentrates

Six liquid dispensers in a variety of bright colours
1.1 MB
Download

What are liquid colour concentrates?

Liquid colour concentrates, also known as liquid masterbatches or liquid colourants, are made up of pigments and additives dispersed in a liquid carrier that are mixed into plastics to impart colour. Liquid colourants offer several advantages over solid colourants including:

  • Faster colour development
  • Improved colour dispersion and consistency
  • Lower energy consumption during production

Functional carrier fluids & polymeric dispersants

Our functional carrier fluids and polymeric dispersants offer a universal and sustainable approach to colourful plastics. An increased demand in consumer packaging, more focus on automotive lightweighting and improved manufacturing efficiency requirements are all contributing to growth in the liquid masterbatch market. Liquid colour masterbatch also offers benefits over solid colour masterbatch, such as:

  • Being ideal for transparent and dilute shades
  • Particular suitability for PET due to low addition rates
  • Being less equipment intensive
  • Compatibility with a broader range of polymers
Watch how a carrier fluid improves pigment wetting

Why choose Croda carrier technologies?

Our bio-based carrier fluids offer tunable polarity and solubility to offer increased pigment loading and wetting.

Benefits include:

  • Polar functionality for improved pigment affinity
  • Low volatility
  • Low viscosity options for wetting inorganics
  • Non-plasticising
  • Miscible with mineral oil to allow dilution if necessary
  • Higher viscosity options for additional shear in grinding organic pigments

The 100% bio-based ECO range of carrier fluids

Many of our high-performance functional carrier fluids are also available as an ECO grade, made from ethylene oxide (EO) manufactured from biomass ethanol. The combination of the bio-based EO, and the high proportion of renewable energy used during the manufacturing process, significantly reduces the carbon footprint of these products.
Read more on our ECO surfactants

Why choose our polymeric dispersants?

Polymeric dispersants are added to pigment dispersions to improve the separation of particles, maximise loading, and to prevent settling and re-agglomeration. Our polymeric dispersants offer a high affinity to pigments, multiple anchoring points, excellent adsorption, and a large steric barrier. These benefits lead to:

  • Faster dispersion
  • Significant viscosity reduction
  • Increased solids loading
  • Superior stability and
  • Improved colour development

Our technical team can advise you on the best dispersant for the pigment you are working with.


Synergistic effect of our carrier fluids & dispersants

Our functional carrier fluids can be combined with our Zephrym dispersants to enhance the overall performance of liquid colour dispersions. When used together compared to individually, they can achieve:

  • Higher pigment loading
  • Improved stability for consistent colour development
  • Faster colour development from organic pigments, leading to energy and time savings during pigment milling
  • Gloss or matte dispersions with no greasiness, hazing or yellowing

How to improve dispersion & stability of liquid colour concentrates

Zephrym dispersants rapidly reduce particle size of the pigment whilst improving stability of the dispersion so that it is homogenous, without any separation.  

In this dispersion of 70% titanium dioxide RFC6 in mineral oil you can see that the dispersion on the left containing 5% Zephrym PD 2206 shows no separation and increased homogenous behaviour compared to the dispersion on the right that contains no dispersant.  

Find out more about Zephrym PD 2206
Do you want to find out more about our carrier fluids and dispersants?