Talk:CR-39

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)

There are two other companies manufacturing ADC for use in the same application - Acomon AG in Italy and Danyang Yueda FineChemichal Co in China

Catalyst-vs-intiator

I changed the IPP section to say that it is an initiator and not a catalyst. The IPP is consumed as part of the reaction, and does not simply act as an intermediary like a catalyst would. Anyone care to delve into that a bit more? David Casale 15:27, 23 December 2009 (UTC)

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)

anti scratch

what about anti scratch added treatment ? —Preceding unsigned comment added by 95.246.106.181 (talk) 12:55, 7 March 2010 (UTC)

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poly

Poly made up by 202.148.60.86 (talk) 17:32, 5 February 2024 (UTC)