Letter 7045

Polymer used for traffic light 

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I want to know that what kind of polymer used for manufacture of Traffic light?

Hamed Heidari
Sharif University of Tech - Tehran, Iran

If my memory serves me, the plastic lens of traffic lights is made of a polymer called rhodour-don't know whether the spelling is correct. I think it is pronounced "road-our". This was told to me by a non plastics person more than 20 years ago who was using it for another purpose.

Thomas Rau
- Dayton, OH, USA

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I want to answer this question publicly (in non-commercial fashion).

 

I am a supporting advertiser and want to reach the inquirer privately.