Thermo Chromic

Liquid crystal thermochromic (full colour spectrum)

available to buy from:

• http://scientificsonline.com/product.asp?pn=3053484&bhcd2=1138188256

Water soluble paints contain microencapsulated nontoxic cholesteryl ester-based liquid crystals that change color as the temperature changes from reddish-brown to green to blue.

The color change reverses itself so the change can be observed repeatedly. Paints may be applied by brush directly to item’s surface. Colors are best seen on a dark background—if not, a black backing paint must be applied first. 25 gram Jar. Available in various temperature ranges:

Leuco dyes based thermochromic (colour to transparent)

info on colour change by Joey berzoswka

• http://xslabs.net/color-change/

Lumenia Technology Ltd

Lumenia Technology Ltd in 2001, with the aim of developing innovative
colorants and ink materials

• http://www.xennia.com/XenniaVensLumenia.htm
• http://www.xennia.com/default.htm
• http://www.colour.leeds.ac.uk/
• http://www.iom3.org/congress2004/technical.htm materials congress
• http://www.sherwoodtech.com/ Sherwood Technology Ltd is a specialist in colour change chemistry

Chromatic Technologies

Since 1993, CTI has been the leader in color-change ink innovation

Thermochromic (a.k.a. "thermochromatic" or "chromatic") ink changes color, appears or disappears as it cools down or heats up.

Photochromic (a.k.a. "photochromatic") ink goes from clear to colored when exposed to sun light, then back to clear when unexposed.

Depending on the kind of Dyna Color ink you get, you can make it change by breathing on it, rubbing it with your fingers, sitting on it, sticking it in the fridge or freezer, blow-drying it or holding it in the sun or under a black light.

Dyna Color interactive inks are available for most printing processes, including offset, flexography and screen printing. They come in 11 standard colors (10 for photochromics), plus a few custom colors.   http://www.ctiinks.com/products/thermo/

UK company selling raw material

• http://www.chromazone.co.uk/

thermo reactive

• http://www.hallcrest.com/
• http://www.siltex.com.cn/prode2.html
• http://www.pilotnbd.com/metamo.html
• http://www.mutr.co.uk/prodDetail.aspx?prodID=594

-- Main.rachel - 15 Jan 2005
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