High index curable photochromic composition and its process

Details High index curable photochromic composition and its process High index curable photochromic composition and its process

2005-08-23

2005-08-23

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C522S101000, C522S013000, C522S018000, C522S102000, C522S103000, C522S153000, C522S150000, C522S167000, C522S075000, C522S181000, C252S582000, C252S586000, C252S588000, C252S589000, C264S001100, C264S001270, C264S001320, C264S001360, C264S494000, C264S496000, C359S241000, C359S242000, C359S244000, C351S159000, C351S16000R, C351S162000, C523S106000, C523S108000

Reexamination Certificate

active

06933325

ABSTRACT:
A high refractive index, curable, synthetic resin composition comprising a core resin composition composed of a mixture of ethylenically unsaturated compounds, and an initiation system containing both photo and thermal initiators, particularly a photochromic resin composition which further includes at least one photochromic dye. Also a curing process, which includes a combination of multi-step radiation curing and thermal annealing. Articles produced of cured composition exhibit superior physical and, in appropriate cases, photochromic properties and can be easily mass produced on a commercial scale due to short processing time and use of readily available chemicals.

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