Compositions – Liquid crystal compositions
Reexamination Certificate
2011-08-02
2011-08-02
Wu, Shean C (Department: 1795)
Compositions
Liquid crystal compositions
C428S001100, C428S411100, C252S299610, C252S299620, C252S299670, C252S299500
Reexamination Certificate
active
07988881
ABSTRACT:
Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain one or more of the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.
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Anderson Jerrel C.
Goldfinger Marc B.
Hayes Richard Allen
Qi Kai
Silverman Lee A.
E. I. Du Pont de Nemours and Company
Wu Shean C
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