Initiators for optical coating formulations with reduced...

Details Initiators for optical coating formulations with reduced... Initiators for optical coating formulations with reduced...

2008-06-19

2011-11-01

Wu, David W (Department: 1762)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S090000, C526S227000, C525S452000, C525S455000, C252S582000, C252S600000

Reexamination Certificate

active

08048974

ABSTRACT:
The invention relates to a acrylated-based optical coating composition containing an organic peroxide initiator which presents a low yellowness level. The initiator has a range of free radical energy that is below a predetermined level. The cure process is controlled by the use a catalyst and a low energy initiator to avoid deleterious reactions that can increase yellowness. The composition is well suited to be applied to a lens and cured in the mold to form a coating with reduced yellowness having high adhesion and abrasion-resistant properties. A dye can be introduced into the composition to form a tinted lens.

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Arkema's Organic Peroxides Product Bulletin (available online at http://www.arkema-inc.com/literature/pdf/301.pdf on Mar. 21, 2006), pp. 1-7.

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