CR-39 is the pseudo-polycarbonate [*] which stands for Columbia Resin #39, the first 38 being failures. (What a lucky developer. There is no way I've ever developed anything in just 39 efforts.)
But what does SU-8 stand for? This is the famous photoresist, so famous that its referred to without any introduction. Please don't get me depressed and tell me that the developer was successful after only 8 attempts.
[*] I say "pseudo" because the polycarbonate linkages are already existant in the monomer. The backbones are built through free-radical polymerization of the telomeric enes
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