Appeal No. 1997-0704
Application No. 08/324,855
APPENDIX
35. A method of thermally stabilizing an optically
transparent waveguide, which waveguide comprises a
patterned photopolymer on a substrate formed by
photopolymerizing a photopolymerizable
composition, the photopolymerizable composition comprising
one or more unsaturated monomers selected from the
group
consisting of 1,6-hexanediol diacrylate,
trimethylolpropane triacrylate, pentaerythritol
triacrylate, ethoxylated trimethylolpropane triacrylate,
glyceryl propoxylated triacrylate, pentaerythritol
tetraacrylate, dipentaerythritol pentaacrylate and
di(trimethylolpropane)tetracrylate, and at least one
photoinitiator capable of activating polymerization
of said monomers when said photopolymerizable composition is
exposed to actinic radiation the method comprising
incorporating into said photopolymerizable composition
from about 35% to ab out 99.9% by weight of the
photopolymerizable composition of at least one
ethylenically unsaturated monomer selected from the group
consisting of ethoxylated bisphenol A diacrylate,
ethoxylated hexafluorobisphenol A diacrylate, and
propoxylated bisphenol A diacrylate wherein said photopolymer
exhibits a coloration on the Gardner Color Scale equal to or
less than 8 as determined by ASTM D1544-80 upon
exposure to a temperature of 190EC in air for 24 hours.
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