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Title: Novel room temperature discotic nematic liquid crystals and a process for their preparation
Authors: Kumar, Sandeep
Varshney, S.K.
Chandrasekhar, S.
Issue Date: 11-Aug-2006
Citation: Indian Patent IN 1999MA00926 A 20060811 11 Aug 11,2006, IN 206801 Jun 29, 2007
Abstract: This invention relates to a process for the prepn. of novel hexaalkynylbenzene derivs. having branched alkyl chains, where the no. of C atoms in the alkyl chains ranging from 4 to 12. The novel hexaalkynylbenzenes of the present invention are useful as discotic nematic liq. cryst. material for display devices. A process for the prepn. of novel hexaalkynylbenzene derivs. comprises condensing an appropriate novel branched alkyl chain substituted phenylacetylenes with hexahalobenzene in the presence of a coupling catalyst at a temp. at 25-​200°.
Description: Restricted Access
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