Polymerizable liquid crystal composition and optically...

Details Polymerizable liquid crystal composition and optically... Polymerizable liquid crystal composition and optically...

2008-05-27

2008-05-27

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C428S001300, C428S001310, C252S299010, C252S299620, C252S299670

Reexamination Certificate

active

07378135

ABSTRACT:
In order to obtain such a liquid crystal thin film having optical anisotropy that suffers less change in optical characteristics thereof under heating to 200° C., the following polymerizable liquid crystal composition is provided as a raw material therefor. The composition contains Compound (1) and at least one of Compound (2) and Compound (3), with a proportion of Compound (1) being from 50 to 99% by weight, a proportion of Compound (2) being from 0 to 50% by weight, and a proportion of Compound (3) being from 0 to 50% by weight:wherein R is alkyl; each of W1and W2is independently hydrogen, chlorine, fluorine or —CH3; each of W3and W4is independently hydrogen, chlorine, fluorine, —CH3or —CF3; W5is alkyl having, alkoxy, chlorine, fluorine, —CN or —OCF3; X is a single bond, —CH═CH— or —CH2CH2—; Z is a single bond, —COO—, —OCO— or —CH2CH2—; and q is an integer of from 1 to 20.

REFERENCES:
patent: 6824709 (2004-11-01), Shundo
patent: 7101595 (2006-09-01), Shundo et al.
patent: 7157124 (2007-01-01), Sasada et al.
patent: 7300604 (2007-11-01), Shundo
patent: 2004-204190 (2004-07-01), None
English translation by computer for JP 2004-204190, http://www4.ipdl.inpit.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2004-204190.

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