What colours are available as standard?

Blue, Red and Black are available ex stock, however, Magenta, Green and Orange are also available.

What temperatures are available?

Standard stock temperatures are 15ºC, 31ºC and 47ºC, however, we also have 29ºC available. Overall the range is available from -20 to 69ºC, but this is dependent on the colour.

Are Thermochromics UV stable?

Thermochromics are sensitive to UV light. They have a lightfastness of about 1-2 on the blue wool scale, however we are constantly looking at improving this and there are ways to increase the life of the product.

What is the opacity of Thermochromics?

Certain colours of Thermochromics (usually Black) can be used to hide an image in printing. To do so may require more than one pass using screen printing methods. It is advisable to obliterate a lighter coloured image using dark coloured thermochromics. Other techniques such as camoflaging and colour matching can be used to hide images where Black and screen printing is not practical.

What chemicals are Thermochromics incompatible with?

Aggressive ingredients should be avoided. Care must be taken to avoid the use of polar solvents such as alcohols, acetates etc., as these can damage pigment structure. Also no aggressive components such as amonia should be used in the systems.

What processing equipment should be avoided?

These pigments should not be used in high impact milling techniques. Process temperatures should be kept to a minimum.

Do Thermochromics contain any heavy metals?

All pigments are non toxic. There are no heavy metals contained in any of the pigments.

What Binders are suitable for the printing inks?

For use in printing inks and coatings we recommend purely water based binder systems, which are neutralised with Dimethylethanolamine (DMEA) or Triethanolamine (TEA). Keep in mind that many additives have a high alcohol content and therefore migh reduce the shelf life. A given stability of ChromaZone pigments in the single components cannot guarantee the stability in the final formulation as negative synergies may occur.

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