color changing spoons


i am trying to research the plastic used in the infant spoons that change color when heat/hot foods are present. Does anyone know what kind of plastic/polymer is used in these type of products or where i can find the info. thanks!

I would contact GE Plastics or Bayer Plastics. If anyone knows how to do this it will be one of them.

http://plastics.bayer.com/plastics/emea/en/home/index.jsp

[/quote]

Thermochromatic is what you are looking for

http://www.dyes.com/techbull/plastics.html