Cyclopenta[b]naphthalene derivatives

Details Cyclopenta[b]naphthalene derivatives Cyclopenta[b]naphthalene derivatives

2007-11-06

2007-11-06

Wu, Shean C (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299620, C570S183000

Reexamination Certificate

active

10524846

ABSTRACT:
The present invention relates to cyclopenta[b]naphthalene derivatives of the general formula (I) in which Z, A, n, R, L5and L8as (II) and (III) are as defined in Claim 1, to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media

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Chemical Abstracts, vol. 122, No. 16, Apr. 17, 1995 Columbus, Ohio, US; abstract No. 201408, Yokokoji, Osamu et al: “Fluorine-containing indane derivatives and liquid crystal compositions containing same” XP002248134 & JP 06263663 (Asahi Glass Co Ltd, Japan) Sep. 20, 1994.

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