Stock material or miscellaneous articles – Composite – Of polycarbonate
Reexamination Certificate
2008-11-24
2011-12-27
Nakarani, D. S. (Department: 1787)
Stock material or miscellaneous articles
Composite
Of polycarbonate
C428S421000, C428S424400, C428S425600, C428S436000, C428S437000, C428S441000, C428S442000, C428S475800, C428S476900, C428S483000, C428S510000, C428S515000, C428S517000, C428S518000
Reexamination Certificate
active
08084129
ABSTRACT:
Disclosed laminates particularly useful as safety glazings comprising a polymeric interlayer sheet, wherein the polymeric interlayer sheet comprises a blend composition of an ethylene copolymer A and an ethylene copolymer B, which has a melt flow rate of less than 100g/10 min, as determined in accordance with ASTM D1238 at 190° C. and 2.16 kg, and wherein the ethylene copolymer A comprises copolymerized units of ethylene and about 3 to about 20 wt % of an ester or anhydride of a C4-C8unsaturated acid having two carboxylic acid groups and the ethylene copolymer B comprises copolymerized units of ethylene and about 6 to about 40 wt % of a polar monomer selected from the group consisting of vinyl acetate, alkyl(meth)acrylates, and mixtures thereof.
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Office Action mailed Apr. 12, 2011, in co-pending U.S. Appl. No. 12/972,847.
Office Action mailed May 3, 2011, in co-pending U.S. Appl. No. 12/972,828.
E. I. du Pont de Nemours and Company
Nakarani D. S.
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