Tetrahydroxybenzene tetraester derivative and polymer thereof

Details Tetrahydroxybenzene tetraester derivative and polymer thereof Tetrahydroxybenzene tetraester derivative and polymer thereof

2007-11-27

2007-11-27

Wu, Shean C (Department: 1756)

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

C252S299010, C252S299670, C428S001100, C428S001310, C528S103000, C549S510000, C549S512000, C549S554000

Reexamination Certificate

active

11355147

ABSTRACT:
The invention includes compounds represented by Formula (1):wherein R1is an alkyl having 1 to 20 carbon atoms; A1and A2are a 1,4-cyclohexylene or 1,4-phenylene; X is a single bond, —C≡C—, —COO—, —OCO—, —CH═CH—COO— or —OCO—CH═CH—; P is an alkylene having 1 to 20 carbon atoms; and p and q are 0, 1 or 2.

REFERENCES:
patent: 2002/0162483 (2002-11-01), Shimizu et al.
patent: 2005/0031801 (2005-02-01), Shundo et al.
patent: 11092427 (1999-04-01), None
patent: 2001-055573 (2001-02-01), None
patent: 2001-154019 (2001-06-01), None
patent: 2005-60373 (2005-03-01), None
English abstract for JP 11092427, 1999.
Bergmann et al., The Synthesis and Characterisation of Nematic NLO Polymer Networks,Mol. Cryst. and Liq. Cryst., 2001, vol. 368, pp. 671-678.
Berg et al., Mesophase Behaviour of 2,5-dibenzoylxy-p-benzoquinone Derivatives and Tetrahydrobenzene Tetraesters,Liquid Crystals, 1991, vol. 9, No. 2, pp. 151-163.
Norbert et al., The Synthesis, Mesomorphic Behaviour and the Uniaxial Nature of 1, 2, 4, 5-Tetra(4-Alkoxybenzoyloxy) Benzenes,Mol. Cryst. Liq. Cryst., 1995, vol. 260, pp. 339-350.

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