Polymerizable liquid crystal compound, liquid crystal...

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...

Reexamination Certificate

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C252S299610, C252S299620, C252S299630, C252S299670, C560S056000, C560S080000, C560S139000, C549S331000, C549S343000, C549S344000, C526S321000

Reexamination Certificate

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08048496

ABSTRACT:
The purpose the invention is to provide a polymerizable liquid crystal compound which has an excellent solubility with other compounds, a high homeotropic property, and a spirobiindan-backbone, and a liquid crystal composition comprising this compound.The purpose is attained with a polymerizable liquid crystal compound represented by Formula (1). A polymer which is excellent in many characteristics can be obtained from this compound and a formed body having optical anisotropy, produced from this polymer can be obtained. In Formula (1), G is a single bond or oxygen; R is hydrogen, methyl (Me) or a group represented by Formula (a), wherein at least two of R are groups represented by Formula (a); P is a polymerizable group represented by any of Formula (P1) to Formula (P8). In Formula (a), a desirable A is 1,4-cyclohexylene or 1,4-phenylene; Z is a bonding group; m is an integer of 0 to 3; X0is a single bond or alkylene; Z0is a single bond, —O—, —OCO—, or —OCOO—; X is a single bond or alkylene.

REFERENCES:
patent: 6080833 (2000-06-01), Otsuji et al.
patent: 2005/0031801 (2005-02-01), Shundo et al.
patent: 11-29526 (1999-02-01), None
patent: 2001-55573 (2001-02-01), None
patent: 2001-154019 (2001-06-01), None
patent: 2002-241348 (2002-08-01), None
English abstract of JP 2005-060373 published Mar. 10, 2005.
Kricheldorf et al., “New Polymer Syntheses. XCVI. Star-Shaped LC-Polyesters Derived from β- (4-Hydroxyphenyl) propionic Acid and 4-Hydroxybenzoic Acid”, Journal of Polymer Science: Part A: Polymer Chemistry, 1998, vol. 36 (9), pp. 1387-1395.

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