Radiation imagery chemistry: process – composition – or product th – Liquid crystal process – composition – or product
Reexamination Certificate
2002-09-12
2008-12-09
Visconti, Geraldina (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Liquid crystal process, composition, or product
C430S270100, C252S299010, C252S299600, C252S299610, C252S299620, C252S299630, C252S299640, C252S299650, C252S299660
Reexamination Certificate
active
07462427
ABSTRACT:
The use of a mesogenic compound having a terminal end chain comprising carbon, oxygen, or sulphur, which has at least one pendent C1-4alkyl, C1-4alkoxy or a cycloalkyl ring, arranged no more than 6 atoms from the end of the chain either decreasing the melting point, increasing the clearing point, increasing the speed of switching and/or increasing the tilt angle of a liquid crystal mixture. Examples of such compounds are of formula (I)where M is a mesogenic core group, and X and Y are terminal groups, provided that at least one group X or Y is a group of sub-formula (i)where Z1, Z2, R1, R2, R3, R4, R5, R6, R7, s, q, m and n are as defined in the specification. Novel compounds of formula (I) are also described and claimed.
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Cosquer Guirec Y
Cowling Stephen J
Goodby John W
Gough Neil
Hird Michael
Nixon & Vanderhye P.C.
Qinetiq Limited
Visconti Geraldina
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