Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Reexamination Certificate
2005-05-31
2005-05-31
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...
C522S113000, C522S121000, C522S120000, C522S180000, C522S178000, C427S508000, C427S496000, C427S487000, C053S461000
Reexamination Certificate
active
06900252
ABSTRACT:
There is provided a radiation-curable coating or packaging composition containing vinyl acrylate and one or more additional components, wherein the composition does not contain a photoinitiator, and the composition polymerizes upon irradiation. The irradiation forms a polymer that demonstrates thermal stability and abrasion resistance, and functions as a moisture barrier. The resulting polymer does not contain any photoinitiator and is therefore useful as a coating or packaging material for foods, or as a coating or packaging material for any application where the exclusion of photoinitiator, and especially residual photoinitiator, is preferred, such as an outdoor weatherable application. A feature of the invention is that the polymerization through exposure to radiation of a composition containing vinyl acrylate may also initiate the polymerization of one or more of the additional components within the composition that would not ordinarily polymerize in the absence of a photoinitiator.
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Oliva C et al., “Electron Paramagnetic Resonance and Electron-Nuclear Double Resonance Characterization of Radicals in Photopolymerized Multifunctional Methacrylates”, Journal of the Chemical Society, Perkin Transactions 2, Chemical Society, Letchworth, GB, vol. 12, pp. 2133-2139.
Hoyle Charles Ensley
Khudyakov Igor Vladimir
Alcatel
McClendon Sanza L
Seidleck James J.
Sughrue & Mion, PLLC
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