Photopolymerizable oxetane derivative and liquid-crystal...

Details Photopolymerizable oxetane derivative and liquid-crystal... Photopolymerizable oxetane derivative and liquid-crystal...

2005-03-21

2008-08-05

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299010, C252S299610, C252S299620, C252S299630, C252S299640, C252S299650, C252S299660, C252S299670, C549S510000, C560S065000, C570S124000, C570S126000, C570S129000

Reexamination Certificate

active

07407691

ABSTRACT:
Provided are a liquid-crystal compound and a liquid-crystal composition containing the compound, of which the advantages are that they show nematic hybrid orientation on a rubbed TAC substrate, they are polymerizable in open air and they readily give a polymer having a high degree of polymerization even when exposed to a relatively small total quantity of light. The films formed by photopolymerizing them keep nematic hybrid orientation. The compound is represented by formula (1):wherein R1is a hydrogen or an alkyl; R2is a hydrogen, —OCF3, etc.; A1is a 1,4-phenylene, etc.; A2and A3are independently a 1,4-cyclohexylene, a 1,4-phenylene, etc.; X1is a single bond, —O—, etc.; X2and X3are independently a single bond, —COO—, —C≡C—, —CONH—, etc.; m is an integer of from 0 to 20; and n is 1 or 0.

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