Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2007-04-03
2008-09-23
Witherspoon, Sikarl A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S349000, C549S357000, C549S407000, C546S026000, C546S255000, C544S242000, C544S245000, C544S335000, C349S001000
Reexamination Certificate
active
07427693
ABSTRACT:
Compounds that are useful in compositions for flat panel displays, for example, are provided. The compounds provided are polar, and are useful in low threshold voltage mixtures. The compounds provided have the general structure:CpCOCH2[A]nZ1[B]mZ2PhX1X2Y, where CpCOCH2 is the structure:A and B are independently in each instance selected from the group consisting of 1,4-cyclohexane, 1,4-phenyl, 1,3-dioxan-5,2-diyl; pyridine-5,2-diyl; and pyrimidin-5,2-diyl; n and m are independently in each instance 0, 1 or 2; Z1and Z2are independently a single bond, —(CH2)2—, CF2O, OCF2, CH2O, OCH2, —C≡C—, COO, OOC; and Y is selected from the group consisting of: F, Cl, CN, OCH2F, CHF2, OCF3, and CF3.
REFERENCES:
patent: 3644502 (1972-02-01), Morin et al.
patent: 3769316 (1973-10-01), Hauser et al.
Daily Polymer Corporation
Greenlee Winner and Sullivan P.C.
Witherspoon Sikarl A
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