Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Reexamination Certificate
2011-04-05
2011-04-05
Nakarani, D. S (Department: 1787)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
C428S332000, C428S437000, C428S441000, C428S442000
Reexamination Certificate
active
07919175
ABSTRACT:
Provided is a transparent and light-weight ballistic resistant safety glazing comprising an ionomer sheet. The ionomer sheet comprises an ionomer derived from a parent acid copolymer that comprises copolymerized units of an α-olefin having 2 to 10 carbon atoms and, based on the total weight of the acid copolymer, about 20 to about 30 wt % of copolymerized units of an α,β-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms. The ionomer is neutralized to a level of about 5% to about 90%, based on the total carboxylic acid content of the acid copolymer, and further comprises at least one cation. Further provided are articles comprising the light-weight ballistic resistant safety glazing.
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Bennison Stephen J.
Kristunas David F.
Ovalle Andres
E. I. Du Pont de Nemours and Company
Kelly Law Registry
Kourtakis Maria M.
Nakarani D. S
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