Talk:CR-39
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What does "39" refer in the cr-39 term? Is this still made in where you said by the company you said? Is it made anywere else in the world?
PPG still makes CR-39 lenses, AOLite also makes tons of cr39 (as hard resin) lenses, it's a pretty popular optical material in eyeglass labs, and it could easily be argued, is optically superior to polycarbonate in many ways. It is definately made elsewhere in the world, it is still made by PPG, and its use is ubiquitous, surface techs sometimes plan their days around it (at least, I have) —Preceding unsigned comment added by 68.126.21.207 (talk) 06:05, 12 October 2007 (UTC)
[edit] Monomer?
The PPG website says that their CR-39 product is a monomer used to create polymers used in eyeglasses. This article currently needs clarifications. --Charles Gaudette (talk) 03:03, 28 December 2007 (UTC)
